The standard provides limits d=40-2000 mm; H=16-630 mm. Belt width b is taken one size smaller than the width of the pulley. Working surface The pulley may be cylindrical or convex to center the belt on the pulley. Arrow convexity 0.3-6 mm (proportional to pulley diameter).

V-belt transmission is used at speeds from 5 to 30 m/s for normal and from 5 to 40 m/s for narrow sections, respectively. Transmitted power up to 50 kW, gear ratio n<7, число ремней в передаче 2-8. Клиновые ремни выполняются бесконечными прорезиненными, трапецеидальной формы с несущим слоем в виде нескольких слоев кордткани или шнура. В зависимости от соотношения ширины и высоты ремни изготовляют трех типов: нормального, узкого и широкого, применяемого в бесступенчатых передачах (вариаторах) по ГОСТ 24848.1-81 и ГОСТ 24848.3-81.

The following estimated (neutral line) belt lengths are standardized: 400, 450, 500, 560, 630, 710, 800, 900, 1000, 1120, 1250, 1400, 1600, 1800, 2000. 2240, 2500, 2800, 3150, 3550, 4000, 4500, 5000, 5600, 6300, 7100, 8000, 9000, 10,000, 11,200, 12,500, 14,000, 16,000, 18,000 .

The pulleys have grooves in the rim for the V-belt. The groove angle varies from 34° to 40° and depends on the diameter of the pulley.

V-ribbed transmission

Section designation	Section dimensions, mm				Maximum length, mm	Recommended number of fins	Smallest diameter of small pulley, mm
	t	H	h	δ
TO	2,4	4	2,35	1	355-2500	2-35	40
L	4,8	9,5	4,85	2,5	1250-4000	4-20	80
M	9,5	16,7	10,35	3,5	2000-4000	4-20	180

Used at speed: 35-40 m/s and gear ratio n=10-15. The belt is made of endless rubber with wedge protrusions on the inside and a load-bearing layer of cord cord. Belt sizes are shown in the reference table.

Main dimensions of timing belts

Circular belt drive

Toothed belt transmission is used at speeds of 50 m/s and power up to 100 kW with a gear ratio n:12 (20). Its advantages: no slipping, small dimensions, low initial tension. In accordance with OST 38 05246-81, belts are made of closed length from neoprene or polyurethane and reinforced with metal cable.
Belt teeth have a trapezoidal or semicircular shape. To prevent the belt from coming off, the pulleys have one limiting disc on each side, or the small pulley has two discs on both sides.

Pulleys

Pulley imbalance

GOST 20889-88
Group G15

STATE STANDARD OF THE USSR UNION

PULLEYS FOR DRIVING V-BELTS OF NORMAL SECTIONS
General technical conditions
Pulleys for driving V-belts with normal sections. General specifications

OKP 41 8520

Valid from 01/01/89
until 01.01.94*
_____________________
* The validity period has been lifted according to Protocol No. 3-93
Interstate Council for Standardization, Metrology
and certification (ICS N 5-6, 1993). - Note.

INFORMATION DATA

1. DEVELOPED AND INTRODUCED by the Ministry of Machine Tool and Tool Industry of the USSR
PERFORMERS

V.G.Seregin, A.M.Sviridov, V.A.Saikov, A.N.Kulakova

2. APPROVED AND ENTERED INTO EFFECT by Resolution of the USSR State Committee on Standards dated March 28, 1988 N 779

3. The date of the first inspection is 1994; inspection frequency - 5 years

4. INSTEAD OF GOST 20889-80 - GOST 20898-80

5. REFERENCE REGULATIVE AND TECHNICAL DOCUMENTS

This standard applies to one-piece single-stage pulleys for driving V-belts in accordance with GOST 1284.1-80.

1. TYPES, MAIN PARAMETERS AND DIMENSIONS

Pulleys must be manufactured of the following types:

1 - monolithic with one-sided protruding hub (Fig. 1);

2 - monolithic with one-sided groove (Fig. 2);

3 - monolithic with a one-sided recess and a protruding hub (Fig. 3);

4 - with a disk and a hub protruding from one end of the rim (Fig. 4);

5 - with a disk and a hub shortened at one end of the rim (Fig. 5);

6 - with a disk and a hub protruding from one end and shortened from the other end of the rim (Fig. 6);

7 - with spokes and a hub protruding from one end of the rim (Fig. 7);

8 - with spokes and a hub shortened at one end of the rim (Fig. 8);

9 - with spokes and a hub protruding from one end and shortened from the other end of the rim (Fig. 9)

Damn.1

Damn.1

Damn.2

Damn.2

Damn.3

Damn.3

Damn.4

Damn.4

Damn.5

Type 5

Damn.5

Damn.6

Type 6

Damn.6

Damn.7

Type 7

Damn.7

Damn.8

Damn.8

Damn.9

Type 9

Mounting hole options for pulleys types 1-9

Note. The drawings do not define the design of the pulleys.

Pulleys of types 1-3 are intended for driving V-belts with sections Z, A, types 4-9 - for driving V-belts with sections Z, A, B, C, D, E, EO in accordance with GOST 1284.1-80.

2. TECHNICAL REQUIREMENTS

2.1. Pulleys for driving V-belts must be manufactured in accordance with the requirements of this standard according to working drawings approved in the prescribed manner.

2.2. The nominal design diameters of the pulleys must correspond to the indicated series: 50; (53); 56; (60); 63; (67); 71; (75); 80; (85); 90; (95); 100; (106); 112; (118); 125; (132); 140; (150); 160; (170); 180; (190); 200; (212); 224; (236); 250; (265); 280; (300); 315; (335); 355; (375); 400; (425); 450; 475; 500; (530); 560; (600); (620), 630; (670); 710; (750); 800; (850); 900; (950); 1000; (1060); 1120; (1180); 1250; (1320); 1400; (1500); 1600; (1700); 1800; (1900) 2000; (2120); 2240; (2360); 2500; (2650); (2800); (3000); (3150); (3550); (3750); (4000) mm.

2.3. The design diameter of the smaller transmission pulley must be no less than the values ​​​​specified in Table 1

Table 1

Note. The dimensions indicated in brackets are used in technically justified cases.

2.4. The profile dimensions of the pulley grooves must correspond to those indicated in Figure 10 and Table 2.

Damn.10

- design width of the pulley groove,
- groove depth above design width,
- design pulley diameter,
- the groove depth is below the design width,
- distance between the axes of the grooves,
- the distance between the axis of the outer groove and the nearest end of the pulley,
- pulley groove angle,
- outer diameter of the pulley,
- radius of curvature of the upper edge of the pulley groove,
- pulley width.

table 2

2.5. The pulley width is calculated using the formula

Where - number of belts in transmission.
The outer diameter of the pulley is calculated using the formula

2.6. A diagram for constructing a symbol for pulleys is given in the appendix.

2.7. Pulleys must be made of materials that ensure the required dimensions and operation of the pulleys under operating conditions (presence of mechanical forces, heating, abrasion).

2.8. Pulley castings should not have defects that impair their appearance. On the surface of castings subjected to machining, defects are allowed in accordance with GOST 19200-80 within the machining allowance.

2.9. Permissible deviation from the nominal value of the calculated pulley diameter h11 according to GOST 25347-82, GOST 25348-82.

2.10. The maximum deviations of the groove angle of pulleys processed by cutting must be no more than:
±1° - pulleys for belts of sections Z, A, B.
± - pulleys for belts of sections C, D, E, EO.

2.11. Maximum deviations of the angle of the conical hole - ± according to GOST 8908-81.

2.12. Maximum deviations of the dimensions of unprocessed surfaces for pulleys:
made of cast iron and steel - according to the 7th accuracy class GOST 26645-85;
from other materials with design diameter:
up to 500 mm - according to the 16th qualification GOST 25347-82;

St. 500 mm - according to the 15th qualification GOST 25347-82, GOST 25348-82.

2.13. The runout tolerance of the conical working surface of the pulley groove in a given direction for every 100 mm of the design diameter relative to the axis should be no more than:
0.20 mm - at a pulley rotation speed of up to 8 s;
0.15 mm - at a pulley rotation speed of St. 8 s to 16 s;
0.10 mm - at a pulley rotation speed of St. 16 s

2.14. The tolerance for radial runout of the surface of the outer diameter relative to the axis of the mounting hole is according to the 9th degree of accuracy according to GOST 24643-81 when monitoring the design diameter using method A. Radial runout of the outer diameter when monitoring the design diameter using method B according to GOST 25069-81.

2.15. The tolerance for cylindricity of outer diameters is according to the 8th degree of accuracy according to GOST 24643-81.

2.16. Every pulley operating at speeds above 5 m/s must be balanced.
Static balancing accuracy standards are given in Table 3.

Table 3

2.17. The tolerance of the end runout of the rim and hub relative to the axis of the mounting hole should be no rougher than the 10th degree of accuracy according to GOST 24643-81.

2.18. Shaft ends for pulleys with a cylindrical hole - according to GOST 12080-66; with a conical hole - according to GOST 12081-72; maximum deviation of the hub diameter according to H9.

2.19. Unspecified maximum deviations of the dimensions of the processed surfaces: H14; h14; ±.

2.20. The value of the roughness parameter according to GOST 2789-73 of the working surfaces of the pulley grooves should be no more than 2.5 microns.

2.21. In pulleys with spokes, the axis of the keyway must coincide with the longitudinal axis of the spoke.

2.22. The average resource of pulleys in operation for an average operating mode is set to no less than 63,000 hours before a major overhaul; the established resource is at least 30,000 hours before a major overhaul.

2.23. Non-working surfaces of metal pulleys must be painted in accordance with GOST 9.032-74 and GOST 12.4.026-76.

2.24. Pulley marking
On the non-working surface of each pulley the following must be clearly marked with paint: the symbol of the belt section, the design diameter, the diameter of the mounting hole, the grade of material and the designation of the standard.

2.25. Container marking is in accordance with GOST 14192-77, with the following additionally indicated on the box:
pulley symbol;
number of pulleys;
packing date.

2.26. Pulleys must be packed in boxes in accordance with GOST 2991-85 or lathing in accordance with GOST 12082-82.
Preservation of treated working surfaces - in accordance with GOST 9.014-78.
The conservation period is 2 years.

3. ACCEPTANCE

3.1. Pulleys must be subject to acceptance and periodic tests by the manufacturer.

3.2. Acceptance tests for compliance with the requirements of clause 2.13; 2.14; 2.16; 2.17; 2.19; 2.21; 2.22; 2.24 each pulley is subjected.

3.3. 10% of the pulleys from the batch are subjected to periodic testing. The batch must consist of pulleys of the same symbol, presented according to one document.
Periodic tests are carried out to ensure compliance with all technical requirements established in the standard, twice a year.

3.4. If during periodic testing at least one of the parameters does not meet the requirements of this standard, re-test the double number of pulleys in full. The results of repeated tests are final.

4. CONTROL AND TEST METHODS

4.1.General provisions

4.1.1. Control of pulley parameters and sizes is carried out at a temperature of (23±5) °C.

4.1.2. Checking parameters, shape deviations and location of pulley surfaces should be carried out using universal measuring tools or special devices that ensure the specified accuracy.

4.1.3. Full control of the parameters and dimensions of the pulley groove should be carried out during periodic testing in the following order:

1) control of the groove angle;

2) control of the cylindricity of the outer surface of the pulley;

3) control of the design diameter;

4) control of fluctuations in the size of the estimated diameter of the same pulley groove;

5) control of runout of the conical working surface of the grooves;

6) control of the end runout of the rim and hub (on both sides);

7) control of the roughness of the working surface of the pulley grooves;

8) control of static balancing.

4.1.4. In multi-groove pulleys, the size of each groove is controlled.

4.2. Acceptance tests include control of geometric parameters.

4.2.1. Carrying out control

4.2.1.1. Groove angle control.
The angle of the pulley groove () is checked with limiting angular gauges according to fig. 11 and 12. The upper and lower limits of the angular gauges should correspond to the angle of the pulley groove, taking into account the largest and smallest tolerances.

The groove angle can be checked using a depth gauge according to fig. 13.

Damn.11

Limit angular gauge

Damn.12

Position of the limit angular gauge in the pulley groove

Damn.13

Special depth gauge

1 - template, 2 - fixed part, 3 - moving part
Damn.13

4.2.1.2. Control of the cylindricity of the outer surface of the pulley is carried out using any of the methods accepted in mechanical engineering.

4.2.1.3. Control of the calculated diameter.
The calculated diameter is determined by method A or B depending on the shape of the outer surface of the pulley.
Method A is used with a tolerance range to control the outer diameter of the pulley h9 according to GOST 25347-82 with a cylindrical outer surface of the pulley.
To determine the design diameter of the pulley, the outer diameter () and groove depth () are measured above the design width. The depth of the groove is measured with a depth gauge, as shown in Fig. 13.

Processing of control results for method A.

4.2.1.4. Method B is used if the cylindricity of the outer surface of the pulley is not established.
To determine the estimated diameter of the pulley, two cylindrical rollers with a diameter indicated in Table 4 are used.

Table 4

The values ​​are set for each groove section in such a way that the contact of the rollers with the two sides of the groove is at or very close to the design diameter. Two rollers are placed in the control groove until they come into contact with it, as shown in Fig. 14. Then measure the distance between the tangent planes of the rollers located parallel to the pulley axis.

Damn.14

4.2.3.4. In multi-groove pulleys, the outer diameter and depth of the pulley groove are measured for each groove, while the maximum deviation of the depth of individual grooves above the design width () should not exceed the values ​​​​specified in Table 5

Table 5

4.2.3.5. Processing of control results for method B.
The estimated pulley diameter () in millimeters is calculated using the formula

Where - the distance between the tangent planes of the rollers located parallel to the pulley axis, measured with an error of , mm;
- distance from the estimated pulley diameter to the tangent plane to the roller located parallel to the pulley axis, mm.

where is the maximum diameter deviation along h11, mm;
- deviation of the depth of a cylindrical roller with a diameter in the pulley groove, mm.
The value in millimeters is calculated using the formula

where is the maximum diameter deviation according to Table 4.
- pulley groove angle.
Diameters and dimensions selected according to Table 4.

4.2.4. Monitoring fluctuations in the size of the estimated diameter of the same pulley groove.
The maximum deviations of value for the same pulley groove must correspond to the values ​​​​indicated in Table 6.

Table 6

Note. The control according to clause 4.2.4 does not include checking the alignment of the pulley hole and grooves.

4.2.5. Control of the runout of the conical working surface of the pulley groove is carried out using devices that ensure the specified accuracy.

4.2.6. The roughness of the working surfaces of the pulley grooves is checked by comparison with roughness samples in accordance with GOST 9378-75, as well as other means of control that ensure the required measurement accuracy.

4.2.7. Static balancing is carried out using devices or balancing machines that ensure the balancing accuracy indicated on the working drawing.

4.2.8. Imbalance during static balancing is eliminated by drilling holes at the ends of the rim or removing metal around the perimeter, surfacing or attaching a load to the spokes.

4.2.9. The presence of porosity, scratches and dents is checked by inspection without the use of magnifying devices.

5. TRANSPORTATION AND STORAGE

5.1. Pulleys can be transported by any type of transport.

5.2. Pulleys must be stored in the manufacturer's packaging in a dry place protected from precipitation.

5.3. When transporting in containers with safety shields that ensure the preservation of product quality, it is allowed to lay pulleys without packaging.

6. MANUFACTURER WARRANTY

The manufacturer guarantees that the pulleys comply with the requirements of this standard subject to the conditions of transportation and storage.
The warranty period is 24 months from the moment the pulleys are put into operation.

APPENDIX (required). DIAGRAM FOR CONSTRUCTION OF PULLEY SYMBOLS

APPLICATION
Mandatory

1 - pulley type; 2 - belt section; 3 - number of pulley grooves; 4 - estimated pulley diameter;
5 - diameter of the mounting hole; 6 - grade of material; 7 - designation of the pulley standard

An example of a pulley designation for drive V-belts type 1, with section A, with three grooves, design diameter mm, with a cylindrical mounting hole mm, made of SCh 20 cast iron according to GOST 1412-85:

Pulley 1 A 3.224.28.SCh 20 GOST 20889-88

The same with a conical mounting hole:

Pulley 1 A 3.224.28K. SCh 20 GOST 20889-88

ROSSTANDART FA on technical regulation and metrology
NEW NATIONAL STANDARDS: www.protect.gost.ru
FSUE STANDARDINFORM provision of information from the Russian Products database: www.gostinfo.ru
FA ON TECHNICAL REGULATION"Dangerous goods" system: www.sinatra-gost.ru

Pulley

Belt drives with pulleys occupy a significant place among the drive elements of modern machines and units. This is explained by their undoubted advantages, namely: simplicity of design, ability to transmit high powers, operation at high speeds, the ability to transmit motion between shafts over long distances and with different spatial orientations, including vertical. Belt drives ensure smooth running, quiet operation, reduce the impact of vibrations and variable loads on equipment components and protect them from damage due to overload. The simplest belt drive consists of two pulleys connected by a belt, rotating on shafts: one pulley is the drive pulley (torque is applied to it from an external energy source), the other is the driven one. The belt tightly covers the outer sides of the pulleys and, thanks to friction at the points of contact with their surface, transmits rotation from the drive pulley to the driven one. Narrow belts should not be used with pulleys designed only for regular belts.

Pulleys are manufactured in types 1-6 (Fig. 1)

Main dimensions of grooved pulleys

For ordinary V-belts (profiles Y, Z, A, B, C, D, E) and narrow V-belts (profiles SPZ, SPA, SPB, SPC), determined by a system based on the original width, GOST R 50641-94 is established.

The initial width is considered as the main groove dimension of the corresponding regular and narrow V-belt.
Specifying the reference line position and reference width are necessary to determine the groove profile of the reference pulley diameter and the position of the belt in the pulley groove.
The initial width of the profiles Wd is presented in Table 1 below.
The groove angle is selected from the following range:
32, 34, 36, 38 degrees. The groove angle tolerance should be plus or minus 0.5 degrees. The profile dimensions are given in Table 2.

Table 1. Outgoing width of groove profiles Wd

Pulleys

Currently Mechanic Techno Company has one of the best warehouse stocks of pulleys in Russia, which are formed from:

Pulleys production Optibelt;

Pulleys production Sati (Sati).

The choice in favor of these manufacturers was made due to the best price/quality combination for these products. This is caused by a large volume of purchases from the Mechanic Techno Company, and as a result of a reduction in delivery costs per unit of product. At the same time, both quality and price are the best in the Russian Federation.

Choose a section

Here you can choose from a huge assortment and buy high-quality drive V-ribbed, poly-V-ribbed, toothed pulleys, pulleys for flat belts, pulleys for boring, pulleys for bushings. We also sell drive belts for pulleys.

Types and types of pulleys:

V-pulleys - transmit torque through V-belts.

Designation.

There is a generally accepted designation for V-pulleys in the world, which consists of several technical characteristics of these parts, such as the number of grooves, the profile of the belt used, and the cord diameter.

Example: 8 SPC 500

Where “8” - number of streams, "SPC"- profile of the belt used on this pulley, “500” - diameter of the pulley along the belt cord. Also, sometimes the pulley designation contains a marking of the bushing used (if the pulley is for a bushing).

The main pulley profiles used in industrial equipment:

• SPZ– profile belts are used on these pulleys SPZ, XPZ, Z/10, 3V/9N
• SPA SPA, XPA, A/13
• SPB - profile belts are used on these pulleys SPB, XPB, B/17, 5V/15N
• SPC- profile belts are used on these pulleys SPC, XPC, C/22

Pulleys for the profiles of classic V-belts are also used 5, Y/6, 8, 20, 25, D/32, E/40

Application.

V-pulleys are the most common type used in units with a high level of transmitted power and speed.

Main areas of application:

• Ventilation equipment;
• Compressor equipment;
• Oil and gas equipment;
• Mining equipment;
• Agricultural equipment;
• Woodworking equipment;
• Other equipment.

Toothed pulleys - transmit torque through timing belts. The transmission of rotational motion is carried out by engaging the belt teeth with the teeth of the pulley.

Designation.

The designation of toothed pulleys, like that of V-pulleys, contains information reflecting their main technical characteristics. For toothed pulleys, these are: the number of teeth, the profile of the belt used, as well as the designation of the belt length or the height of the pulley. Some manufacturers indicate a combination of letters in the pulley markings "TV" which indicates that this pulley is under the bushing.

Example #1: Pulley 80-8M-20

Where “80” - number of teeth, “8M” “20” - width of the belt used.

Example #2: Pulley TV 47AT10-48

Where “TV” - “47” - pulley height, “AT10” - profile of the belt used, “48” - number of teeth.

The main profiles of toothed pulleys are:

XL, L, H, XH, 3M, 5M, 8M, 14M, T2.5, T5, T10, AT5, AT10

Application.

Toothed pulleys are used in units in which it is necessary to ensure the transmission of rotational torque without slipping and large transmission ratios; at the same time, the gear transmission does not require large tension, and, therefore, provides less load on the shafts and supports.

Toothed pulleys are used in the automotive industry (timing belts and other mechanisms), in mechanical engineering (for transmitting rotational motion in power drives of mechanisms), in the food, tobacco, textile, printing and other light and heavy industries.

Poly V-ribbed pulleys.

Pulleys for poly V-belts are the result of consistent work on the further development of drive elements. This drive combines extraordinary elasticity with good power transmission.

Designation.

The designation of poly-V-pulleys reflects the main technical characteristics characteristic of these parts.

Example: Pulley TB 8 PJ 182.5

Where “TV” indicates that the pulley is under the bushing, “8” - number of streams, "PJ"- profile of the belt used, “182,5” - pulley diameter.

The main profiles of poly-V-ribbed pulleys include:

PH, PJ, PK, PL, PM

Application.

Poly V-ribbed drives are a good choice for cost-effective solutions in harsh operating conditions, in applications with large gear ratios, in high-speed drives or with small pulley diameters.

Poly V-ribbed pulleys withstand the test perfectly in serpentine (winding) drives at large gear ratios. Poly V-belts are a good addition to the program because, thanks to their efficient operation and transmission of large loads, they are suitable for compact drives, both in household appliances and in heavy engineering products.

Variable pulleys.

A variator is a mechanical transmission capable of smoothly changing the gear ratio within a certain control range. CVTs are mainly used in equipment that requires stepless adjustment of the gear ratio - cars, conveyors, metal-cutting and woodworking machines, concrete mixers, scooters, agricultural and other equipment.

One type of mechanical variator is a belt variator, where the transmission of torque between the shafts of the mechanism occurs through a variator belt.

CVT pulleys are, for those represented Mechanic Techno manufacturers, non-standard products, in this regard, for their manufacture it is necessary to provide a drawing with complete technical information. Can be used as a replacement for variable speed pulleys adjustable pulleys.

Pulleys for flat belts

Pulleys for flat belts are used in a flat belt transmission, which serves to transmit torque between the shafts of mechanisms and machines through a flexible connection - a flat belt. Shafts can have parallel, intersecting or crossing axes.

The main advantages of flat belt transmission include simplicity of design, smooth running, low noise characteristics, high accuracy of synchronous rotation, the ability to work with high angular speeds, and transmission of torque between shafts located at a considerable distance from each other. Due to their high flexibility, flat drive belts absorb shocks and vibrations during sudden load changes and compensate for errors in the installation of transmission shafts. In addition, the flat belt drive requires minimal maintenance in operation with an efficiency of 98%.

In mechanical drives, flat belt drives are commonly used to reduce speed.

Flat pulleys, as well as variable-speed pulleys, are, for the manufacturers represented by Mechanic Techno, non-standard products; therefore, for their manufacture it is necessary to provide a drawing with complete technical information.

Application.

Pulleys for flat belts are used in press mechanisms for the manufacture of truck bodies, as drives for sawmills, in woodworking, weaving, spinning, textile, lathe and other machines, in generators, ventilation units, as well as centrifugal and pneumatic pumps, in agricultural engineering and etc.

Pulleys for round belts

Pulleys for round belts used for transmitting low power and transporting light loads. The advantages of round belt transmission are increased flexibility and elasticity.

Pulleys for round belts are non-standard products, therefore, in order to study the possibility of manufacturing these parts, it is necessary to provide the manufacturer with drawings with all technical characteristics.

1. By type of fit on the shaft

• Pulleys for taperbush bushing;
• Pulleys for boring;
• Pulleys for a specific mounting diameter.

Bushing pulleys.

In this system, a bushing (Taper bushes) is used as a mounting system on the shaft.

Bushing pulleys have the following advantages:

• Changing the landing diameter of the pulley. The ability to quickly change the fit diameter of the pulley on the shaft by replacing the bushing;
• Repair. The ability to restore the functionality of a pulley, lost due to its damage at the location on the shaft, subject to increased mechanical wear, by replacing the bushing.

Pulleys for boring.

These pulleys have a small hole in the center of the pulley, which is bored by the end user to the required shaft diameter. To bore a hole, specialized equipment is required.

A negative property of this type of pulley is the impossibility of repairing the pulley if the seat is damaged (it is only possible to bore the pulley to a larger seat diameter, thereby cutting off the damage).

The advantage of pulleys for boring is the possibility of obtaining a larger bore diameter than that of a pulley for a bushing.

Pulleys for a certain diameter.

These pulleys have a mounting hole with or without a machined keyway.

The advantage of this type of pulley is the speed of installation, as well as the possibility of manufacturing a lightweight pulley.

These pulleys are produced by many foundries that produce these parts according to customer drawings.

• Cast iron;
• Steel;
• Aluminum;
• Plastic pulleys;

The use of a particular material in the production of pulleys is determined by the scope of its application and operating conditions.

Most V-pulleys used in industrial equipment are made of gray cast iron, this is due to its low cost and ease of processing.

If the pulley is subject to impacts during operation, strong temperature fluctuations, and also if it is impossible to use cast iron in its design, this part is made of carbon or alloy steels.

Pulleys made of aluminum and plastics are used in drives in which it is necessary to minimize the weight of the unit.

All standard V-pulleys are imported Mechanic Techno Company for storage are made of gray cast iron. The toothed pulleys supplied are made of gray cast iron, steel, aluminum or bronze.

Pulley type.

Also, all manufacturers of standard pulleys use in their production the division of these parts according to structural types. Many manufacturers use similar divisions into types and, accordingly, similar designs of pulleys of the same type.

The differences between pulleys of different types lie in their shape, the method of installing the bushing and other parameters that indirectly affect the performance properties of the part.

Whether a pulley belongs to one type or another is reflected in the catalog of the manufacturer and (or) supplier.

Selection of analogues.

Products from all manufacturers are manufactured according to sizes and other technical specifications. characteristics generally accepted in the world, and therefore in most cases it is interchangeable. An exception may be a different type of pulley, a difference in the types of bushings used, as well as in such secondary characteristics as the weight of the pulley, the presence of lightening holes and their number, material of manufacture, etc.

Products delivered to the Mechanic Techno warehouse:

Here you can choose from a huge assortment and buy high-quality V-ribbed, poly-V-ribbed, toothed pulleys, pulleys for boring, pulleys for bushings.

Also the company Mechanic Techno supplies from stock and on order such goods as V-belts, toothed, poly-V-ribbed and other belts, and tapered bushings and hubs all standard sizes used.

Advantages of Mechanic Techno.

• Possibility of providing the lowest prices for most pulleys;
• Best quality;
• The largest warehouse of V-pulleys;
• Supply of related products;
• Opportunity to buy pulleys from several manufacturers and suppliers in one place.

Thus, the presence of a wide range of high-quality, reliable V-ribbed, poly-V-ribbed, toothed, pulleys for boring, pulleys for bushings, and other drive pulleys in our own warehouse allows us to offer optimal prices, convenient logistics, minimal delivery times, as well as technical advice from our specialists.

Size: px

Start showing from the page:

Transcript

1 GOST Pulleys for driving V-belts of normal sections. General technical conditions. OKP Validity from to * * The validity period was removed according to Protocol No. 3-93 of the Interstate Council for Standardization, Metrology and Certification (IUS No. 5-6, 1993). INFORMATION DATA 1. DEVELOPED AND INTRODUCED by the Ministry of Machine Tool and Tool Industry of the USSR CONTRACTORS V.G.Seregin, A.M.Sviridov, V.A.Saikov, A.N.Kulakova 2. APPROVED AND ENTERED INTO EFFECT by Resolution of the USSR State Committee for Standards from N Date of first inspection; inspection frequency - 5 years 4. INSTEAD OF GOST GOST REFERENCED REGULATIVE AND TECHNICAL DOCUMENTS Designation of the technical documentation to which the reference is given Number of paragraph, subparagraph GOST GOST GOST GOST Introductory part, paragraph 1 GOST GOST GOST GOST GOST GOST GOST GOST, 2.15, 2.17 GOST GOST , 2.12, GOST, 2.12 GOST

2 This standard applies to one-piece single-stage pulleys for driving V-belts in accordance with GOST Types, main parameters and dimensions Pulleys must be manufactured of the following types: 1 - monolithic with a one-sided protruding hub (Fig. 1); 2 - monolithic with one-sided groove (Fig. 2); 3 - monolithic with a one-sided recess and a protruding hub (Fig. 3); 4 - with a disk and a hub protruding from one end of the rim (Fig. 4); 5 - with a disk and a hub shortened at one end of the rim (Fig. 5); 6 - with a disk and a hub protruding from one end and shortened from the other end of the rim (Fig. 6); 7 - with spokes and a hub protruding from one end of the rim (Fig. 7); 8 - with spokes and a hub shortened at one end of the rim (Fig. 8); 9 - with spokes and a hub protruding from one end and shortened from the other end of the rim (Fig. 9) Drawing 1 Type 1 Drawing 1 Drawing 2 Type 2

3 Drawing 2 Drawing 3 Type 3 Drawing 3 Drawing 4 Type 4 Drawing 4

4 Drawing 5 Type 5 Drawing 5 Drawing 6 Type 6 Drawing 6 Drawing 7 Type 7

5 Drawing 7 Drawing 8 Type 8 Drawing 8 Drawing 9 Type 9 Drawing 9

6 Options for the mounting hole of pulleys types 1-9 Note. The drawings do not define the design of the pulleys. Pulleys of types 1-3 are intended for driving V-belts with sections Z, A, types for driving V-belts with sections Z, A, B, C, D, E, EO according to GOST Technical requirements 2.1. Pulleys for driving V-belts must be manufactured in accordance with the requirements of this standard according to working drawings approved in the prescribed manner. The nominal design diameters of the pulleys must correspond to the specified series: 50; (53); 56; (60); 63; (67); 71; (75); 80; (85); 90; (95); 100; (106); 112; (118); 125; (132); 140; (150); 160; (170); 180; (190); 200; (212); 224; (236); 250; (265); 280; (300); 315; (335); 355; (375); 400; (425); 450; 475; 500; (530); 560; (600); (620), 630; (670); 710; (750); 800; (850); 900; (950); 1000; (1060); 1120; (1180); 1250; (1320); 1400; (1500); 1600; (1700); 1800; (1900) 2000; (2120); 2240; (2360); 2500; (2650); (2800); (3000); (3150); (3550); (3750); (4000) mm. Note. The dimensions indicated in brackets are used in technically justified cases. The design diameter of the smaller transmission pulley must be no less than the values ​​​​specified in Table 1 Table 1 Designation of the belt section Design diameter of the smaller pulley, mm Z 63 (50) A 90 (75) V 125 C 200 D 315 E 500 EO 800

7 Note. The dimensions indicated in brackets are used in technically justified cases. The dimensions of the pulley groove profile must correspond to those indicated in Figure 10 and Table 2. Figure 10 Figure 10 - design width of the pulley groove, - depth of the groove above the design width, - design diameter of the pulley, - depth of the groove below the design width, - distance between the axes of the grooves, - distance between the axis of the outermost groove and the nearest end of the pulley, - angle pulley grooves, - outer diameter of the pulley, - radius of curvature of the upper edge of the pulley groove, - pulley width. table 2

8 Dimensions, mm Belt cross-section No. min. Prev. off Nom. Prev. off Z 8.5 2.5 7.0 12.0 ±0.3 8.0 ±1.0 0, A 11.0 3.3 8.7 15.0 ±0.3 10.0 +2.0 1.0 V 14.0 4.2 10.8 19.0 ±0.4 12.5 +2.0 1.0 C 19.0 5.7 14.3 25.5 ±0.5 17.0 +2.0 1.5 - -1.0 D 27.0 8.1 19.9 37.0 ±0.6 24.0 +3.0 2.0 - -1.0 E 32.0 9, 6 23.4 44.5 ±0.7 29.0 +4.0 2.0 - -1.0 EO 42.0 12.5 30.5 58.0 ±0.8 38.0 +5.0 2, The pulley width is calculated using the formula -1.0, (1) where is the number of belts in the transmission. The outer diameter of the pulley is calculated using the formula. (2) for the angle of the groove The diagram for constructing a symbol for pulleys is given in the Appendix. Pulleys must be made of materials that ensure the required dimensions and operation of the pulleys under operating conditions (presence of mechanical forces, heating, abrasion) Pulley castings must not have defects that impair their appearance view. On the surface of castings subjected to machining, defects are allowed according to GOST within the allowance for machining. Permissible deviation from the nominal value of the calculated diameter of pulleys h11 according to GOST, GOST. Maximum deviations of the groove angle of pulleys machined by cutting must be no more than: ±1 - pulleys for belts of sections Z, A, B.

9 ± - pulleys for belts of sections C, D, E, EO Maximum deviations of the angle of the conical hole - ± according to GOST Maximum deviations of the dimensions of unmachined surfaces for pulleys: made of cast iron and steel - according to the 7th accuracy class of GOST; from other materials with a design diameter of up to 500 mm - according to the 16th grade of GOST; St. 500 mm - according to the 15th quality of GOST, GOST The runout tolerance of the conical working surface of the pulley groove in a given direction for every 100 mm of the design diameter relative to the axis should be no more than: 0.20 mm - at a pulley rotation speed of up to 8 s; 0.15 mm - at a pulley rotation speed of St. 8 s to 16 s; 0.10 mm - at a pulley rotation speed of St. 16 s Tolerance for radial runout of the surface of the outer diameter relative to the axis of the mounting hole - according to the 9th degree of accuracy according to GOST when checking the design diameter using method A. Radial runout of the outer diameter when monitoring the design diameter using method B according to GOST Tolerance for the cylindricity of outer diameters - according to the 8th degree accuracy according to GOST Each pulley operating at speeds above 5 m/s must be balanced. Static balancing accuracy standards are given in Table 3. Table 3 Peripheral speed of the pulley, m/s Permissible imbalance, g m From 5 to 10 6 St. 10 " 15 3 " 15 " 20 2 " 20 " The tolerance of the end runout of the rim and hub relative to the axis of the mounting hole should be no coarser than the 10th degree of accuracy according to GOST Shaft ends for pulleys with a cylindrical hole - according to GOST; with a conical hole - according to GOST; maximum deviation of the hub diameter according to N Unspecified maximum deviations of the dimensions of the machined surfaces: H14; h14; ±.

10 2.20. The value of the roughness parameter according to GOST of the working surfaces of the pulley grooves should be no more than 2.5 µm. In pulleys with spokes, the axis of the keyway must coincide with the longitudinal axis of the spoke. The average resource of pulleys in operation for an average operating mode is set to at least an hour before major repairs, the established resource is at least an hour before major repairs Non-working surfaces of metal pulleys must be painted in accordance with GOST and GOST Marking of the pulley On the non-working surface of each pulley the following must be clearly painted with paint: symbol of the belt section, design diameter, diameter of the mounting hole, grade of material and standard designation Marking of the container - according to GOST, while on the box they additionally indicate: symbol of the pulley; number of pulleys; packing date Pulleys must be packed in boxes in accordance with GOST or lathing in accordance with GOST Preservation of treated working surfaces - in accordance with GOST Preservation period is 2 years. 3. Acceptance 3.1. Pulleys must be subject to acceptance and periodic tests by the manufacturer. Acceptance tests for compliance with the requirements of clause 2.13; 2.14; 2.16; 2.17; 2.19; 2.21; 2.22; 2.24 each pulley is subjected to periodic testing. 10% of the pulleys from the batch are subjected to periodic testing. The batch must consist of pulleys of the same symbol, presented according to one document. Periodic tests are carried out for compliance with all technical requirements established in the standard, twice a year. If during periodic tests at least one of the parameters does not meet the requirements of this standard, the double number of pulleys is tested again according to the full program. The results of repeated tests are final. 4. Methods of control and testing 4.1.General provisions

11 Control of the parameters and dimensions of the pulleys is carried out at a temperature of (23±5) C. Checking the parameters, deviations of the shape and location of the surfaces of the pulleys should be carried out using universal measuring tools or special devices that ensure the specified accuracy. Full control of the parameters and dimensions of the pulley groove should be carried out during periodic tests in the following order: 1) control of the groove angle; 2) control of the cylindricity of the outer surface of the pulley; 3) control of the design diameter; 4) control of fluctuations in the size of the estimated diameter of the same pulley groove; 5) control of runout of the conical working surface of the grooves; 6) control of the end runout of the rim and hub (on both sides); 7) control of the roughness of the working surface of the pulley grooves; 8) control of static balancing In multi-groove pulleys, the dimensions of each groove are controlled. Acceptance tests include control of geometric parameters. Carrying out control. Control of the groove angle. The angle of the pulley groove () is checked with limiting angular gauges according to fig. 11 and 12. The upper and lower limits of the angular gauges should correspond to the angle of the pulley groove, taking into account the largest and smallest tolerances. The groove angle can be checked using a depth gauge according to fig. 13. Drawing 11 Limiting angular gauge Drawing 11

12 Position of the limiting angular gauge in the pulley groove Drawing 12 Drawing 13 Special depth gauge 1 - template, 2 - fixed part, 3 - moving part Draw Control of the cylindricity of the outer surface of the pulley is carried out by any of the methods accepted in mechanical engineering Control of the design diameter. The calculated diameter is determined by method A or B depending on the shape of the outer surface of the pulley. Method A is used with a tolerance range to control the outer diameter of the pulley h9 according to GOST with a cylindrical outer surface of the pulley. To determine the design diameter of the pulley, the outer diameter () and groove depth () are measured above the design width. The depth of the groove is measured with a depth gauge, as shown in Fig. 13. Processing of control results for method A. The estimated diameter of the pulley () in millimeters is calculated using the formula. (3) Method B is used if the cylindricity of the outer surface of the pulley is not

13 installed. To determine the estimated diameter of the pulley, two cylindrical rollers with the diameter indicated in Table 4 are used. Table 4 mm Designation of the belt section Nominal diameter of the cylindrical roller Maximum deviation of the roller diameter Z 9.0-0.036 6.0 A 12.0-0.043 8.5 B 15.0-0.110 10.2 C 20.0-0.130 13.1 D 28.0-0.130 17.7 E 34.0-0.160 22.6 EO 45.0-0.160 30.6 The values ​​are set for each groove section in such a way that the contact of the rollers with the two sides of the groove is at the level of the calculated diameter or very close to him. Two rollers are placed in the control groove until they come into contact with it, as shown in Fig. 14. Then measure the distance between the tangent planes of the rollers located parallel to the pulley axis. Figure 14 Figure In multi-groove pulleys, the outer diameter and depth of the pulley groove are measured for each groove, while the maximum deviation of the depth of individual grooves above the design width () should not exceed the values ​​​​specified in Table 5 Table 5

14 mm Belt cross-section at up to 500 at St. 500 Z - A 0.10 B 0.2 C 0.15 0.3 D 0.25 0.5 E EO 0.30 0, Processing control results for method B. The estimated pulley diameter () in millimeters is calculated by the formula, (4) where is the distance between the tangent planes of the rollers located parallel to the pulley axis, measured with an error, mm; - distance from the estimated pulley diameter to the tangent plane to the roller located parallel to the pulley axis, mm The value in millimeters is calculated by the formula, (5) where is the maximum diameter deviation along h11, mm; - deviation of the depth of a cylindrical roller with a diameter in the pulley groove, mm. The value in millimeters is calculated using the formula, (6) where is the maximum diameter deviation according to Table 4. - pulley groove angle. Diameters and dimensions are selected according to the table. Control of fluctuations in the size of the estimated diameter of the same pulley groove. The maximum deviations of value for the same pulley groove must correspond to the values ​​​​indicated in Table 6. Table 6

15 mm Design diameter Maximum size deviation From 50 to 80 0.19 " 85 " 118 0.22 " 125 " 180 0.25 " 190 " 250 0.29 " 265 " 315 0.32 " 335 " 400 0.36 " 425 " 500 0.40 " 530 " 630 0.44 From 670 to 800 0.50 " 850 " .56 " 1060 " .66 " 1320 " .78 " 1700 " .92 " 2120 " .10 " 2650 " .26 " 3350 " ,44 Note. Control according to p does not include checking the alignment of the pulley hole and grooves. Control of the runout of the conical working surface of the pulley groove is carried out using devices that ensure the specified accuracy. The roughness of the working surfaces of the pulley grooves is checked by comparison with roughness samples in accordance with GOST, as well as other means of control that ensure the required accuracy measurements Static balancing is carried out using devices or balancing machines that ensure the balancing accuracy indicated on the working drawing. Imbalance during static balancing is eliminated by drilling holes at the ends of the rim or removing metal around the perimeter, surfacing or fastening a weight on the spokes. The presence of porosity, scratches and dents is checked by inspection without using magnifying devices. 5. Transportation and storage 5.1. Pulleys can be transported by any type of transport. Pulleys must be stored in the manufacturer's packaging in a dry place protected from precipitation. When transporting in containers with safety shields that ensure the preservation of product quality, it is allowed to lay pulleys without

16 packs. 6. Manufacturer's guarantees The manufacturer guarantees that the pulleys comply with the requirements of this standard subject to the conditions of transportation and storage. The warranty period is 24 months from the moment the pulleys are put into operation. Application (required). Scheme for constructing a symbol for pulleys APPENDIX Mandatory DIAGRAM FOR CONSTRUCTING A CONVENTIONAL DESIGNATION FOR PULLEYS 1 - type of pulley; 2 - belt section; 3 - number of pulley grooves; 4 - estimated pulley diameter; 5 - diameter of the mounting hole; 6 - grade of material; 7 - designation of the standard for a pulley An example of a pulley designation for drive V-belts type 1, with section A, with three grooves, design diameter mm, with a cylindrical mounting hole mm, made of cast iron grade SCh 20 according to GOST: Pulley 1 A SCh 20 GOST To also with a conical mounting hole: Pulley 1 A K. SCH 20 GOST

GOST R 50641-94. Grooved pulleys for regular and narrow V-belts. System based on original width. Date of introduction 1995-01-01 INFORMATION DATA 1. PREPARED AND INTRODUCED by the Technical Committee

STATE STANDARD OF THE UNION OF THE SSR PULLEYS FOR DRIVING V-BELTS OF NORMAL SECTIONS GENERAL TECHNICAL CONDITIONS GOST 2 0 8 8 9-8 8 Price S kop. BZ 2-88/172 Official edition knitted jackets

G O S U D A R S T V E N Y S T A N D A R T S O U S A S S R PULLEYS for flat DRIVE BELTS GOST 17383 73 Official building Price 9 kopecks. STATE COMMITTEE OF STANDARDS OF THE COUNCIL OF MINISTERS OF THE USSR

GOST R 50642-94. Belt drive pulleys. System based on original width. Geometric check of grooves. Date of introduction 1995-01-01 INFORMATION DATA 1. PREPARED AND ENTERED BY Technical

GOST 1284.1-89 (ISO 1081-80, ISO 4183-80, ISO 4184-80) V-belts of normal sections. Main dimensions and control methods INTERSTATE STANDARD Date of introduction 01/01/1991 INFORMATION DATA

GOST R 50641-94 (ISO 4183-89) STATE STANDARD OF THE RUSSIAN FEDERATION PULLEYS WITH GROOVES FOR CONVENTIONAL AND NARROW V-BELTS. SYSTEM BASED ON ORIGINAL WIDTH Official publication S3 5-93/4 1;

GOST 8027-86. Hob cutters for splined shafts with a straight-sided profile. Technical specifications STATE STANDARD OF THE UNION OF THE SSR GOST 8027-86 (ST SEV 880-78) Group G23 WORM CUTTERS FOR SPLINED SHAFTS

Group G27 M E F G O S U D A R S T V E N N Y S T A N D A R T Control parts HANDWHEELS, ROTATING HANDLES, HANDLES, BUTTONS General technical specifications Control parts handwheels, swivel levers handles,

GOST 26576-85 Rolling bearings. Eccentric and concentric retaining rings and set screws for fastening ball bearings. Technical specifications Accepting authority: USSR State Standard Date

STATE STANDARD OF THE UNION OF THE SSR TESTING ELEGATIONS 90 TECHNICAL CONDITIONS GOST 3749-77 USSR STATE COMMITTEE FOR PRODUCT QUALITY MANAGEMENT AND STANDARDS CONTENTS Moscow 1. TYPES. BASIC

STATE STANDARD OF THE UNION OF THE SSR Test squares 90 TECHNICAL CONDITIONS GOST 3749-77 STATE COMMITTEE OF THE USSR ON PRODUCT QUALITY MANAGEMENT AND STANDARDS Moscow STATE STANDARD OF THE UNION

GOST 4046-80 Group P54 STATE STANDARD OF THE UNION OF THE SSR SINE bars Technical conditions Sins bars. Technical conditions OKP 39 4440 Date of introduction 1982-01-01 INFORMATION DATA 1. DEVELOPED

G O S U D A R S T V E N N Y S T A N D A R T S O U Z A S S A N G L E S T E R E N G E R 90 Specifications Checking 90 squares. Specifications GOST 3749-77 This standard applies to calibration

GOST 19752-84 Flat metal sealing gaskets for closed valve connections. Technical conditions Group G17 STATE STANDARD OF THE UNION OF THE SSR Validity from 07/01/85 to 07/01/90* By Decree

STATE STANDARD OF THE UNION OF THE SSR WHEELS CRANE TECHNICAL CONDITIONS GOST 28648-90 STATE COMMITTEE OF THE USSR ON PRODUCT QUALITY MANAGEMENT AND STANDARDS Moscow STATE STANDARD OF THE UNION OF THE SSR

GOST 7661-67. Depth gauges are indicator. Technical conditions (with Amendments N 2-6) GOST 7661-67 Group P53 INTERSTATE STANDARD INDICATOR DEPTH GAUGES Technical conditions Dial depth gauges. Specifications

GOST 15127-83 Solid worm cutters for cutting sprocket teeth for drive roller and bushing chains. Technical specifications Validity period from 07/01/85 to 01/01/96* * Validity period removed

GOST 19752-84 Group G17 STATE STANDARD OF THE UNION OF THE SSR METAL FLAT SEALING GASKETS FOR CLOSED GATES CONNECTIONS Technical specifications Sealing metal flat gaskets for closed gates.

GOST 28648-90 Group G86 STATE STANDARD OF THE UNION OF THE SSR CRANE WHEELS Technical conditions Crane wheels. Specifications OKP 31 7829 Date of introduction 1991-07-01 INFORMATION DATA 1. DEVELOPED AND INTRODUCED

GOST 10495-80 Hex nuts for flange connections on Ru over 10 to 100 MPa (over 100 to 1000 kgf/sq.cm). Technical specifications (with Amendments No. 1, 2) INFORMATION DATA 1. DEVELOPED AND INTRODUCED

GOST 397-79 Cotter pins. Technical conditions INTERSTATE STANDARD Date of introduction 07/01/1979 By Decree of the USSR State Committee on Standards dated February 16, 1979 611 the date of introduction was established

GOST 1523-81 Cylindrical reamers. Technical specifications Date of introduction 1982-01-01 Information data 1. DEVELOPED AND INTRODUCED by the Ministry of Machine Tool and Tool Industry DEVELOPER

GOST 10495-80 INTERSTATE STANDARD HEX NUTS FOR FLANGED CONNECTIONS ON R y OVER 10 to 100 MPa (over 100 to 1000 kgf/cm 2) INTERSTATE STANDARD HEX NUTS FOR FLANGED

INTERNATIONAL G O S U D A R S T V E N N Y S T A N D A R T GOST 397-79 Cotter pins TECHNICAL CONDITIONS Moscow Standartinform 2006 CONTENTS 1. DESIGN AND DIMENSIONS 2. TECHNICAL REQUIREMENTS 3. ACCEPTANCE RULES 4.

GOST 14952-75 Combined centering drills. Technical specifications Date of introduction 1977-01-01 The validity period was lifted according to Protocol N 7-95 of the Interstate Council for Standardization and Metrology

GOST 18123-82. Washers. General technical conditions (with Amendments No. 1, 2) GOST 18123-82 By Decree of the USSR State Committee for Standards of June 2, 1982 No. 2256, the introduction date was set to 01.01.84

INTERNATIONAL STANDARD THICKNESS GAUGES AND WALL GAUGES WITH DIVISION PRICE 0.01 and 0.1 TECHNICAL CONDITIONS IPC PUBLISHING HOUSE OF STANDARDS Moscow a G O S U D A R S T V E N

GOST 26290-90 Combined radial and thrust double roller bearings. Technical specifications Validity period from 07/01/91 to 07/01/96* * The validity period was removed according to Protocol No. 5-94 of the Interstate

GOST 397-79 M E F G O S U D A R S T V E N N Y S T A N D A R T SPINTS TECHNICAL CONDITIONS Official publication Moscow Standartinform 2006 Group G36 M E F G O S U D A R S T V E N N Y S T A N D A R T

GOST 24848.2-81. Variable speed V-belts for industrial equipment. Technical conditions. Date of introduction 1982-07-01 INFORMATION DATA 1. DEVELOPED AND INTRODUCED by the Ministry of Petroleum Refining

GOST 16595-84 Hand diamond whetstones. Technical conditions (with Amendment No. 1) Validity period, from 01.01.86 to 01.01.96* * The validity period was removed according to Protocol No. 5-94 of the Interstate Council for

GOST 3749-77 M E F G O S U D A R S T V E N N Y S T A N D A R T A N G E N G TESTING ANGLES 90 TECHNICAL CONDITIONS Official publication IPC PUBLISHING HOUSE OF STANDARDS Moscow UDC 531.718.5.089.62:006.354 Group P54

GOST 10494-80 Studs for flange connections with lens seals for PN over 10 to 100 MPa (over 100 to 1000 kgf/sq.cm). Specifications (with Amendments No. 1, 2) INFORMATION DATA 1. DEVELOPED

MAGNETIC CHUCKS TECHNICAL CONDITIONS GOST 24568 81 OKP 39 6116 MAGNETIC CHUCKES Technical conditions Magnetic chucks. Technical conditions GOST 24568-81* Replaces GOST 16933 71 GOST 16934 71 Resolution

GOST 19853-74. Grease fittings. Technical specifications (with Amendments No. 1, 2) GOST 19853-74 INFORMATION DATA 1. DEVELOPED AND INTRODUCED by the Ministry of Automotive and Agricultural Engineering

GOST 28241-89. Hand vice. Technical specifications Date of introduction 1991-01-01 INFORMATION DATA 1. DEVELOPED AND INTRODUCED by the Ministry of Machine Tool and Tool Industry of the USSR 2. APPROVED

GOST 17277-71 Solid carbide twist drills. Technical specifications Date of introduction 1973-01-01 PUSHED INTO EFFECT by the resolution of the State Committee of Standards of the Council of Ministers of the USSR dated November 17

GOST 2679-93 (ISO 2296-72) Group G23 INTERSTATE STANDARD SLITING AND CUTTING-OFF MILLS Technical conditions Metal slitting and cutting-off saws. Specifications OKS 25.100.20 OKP 39 1836, 39 1837 Date

GOST 17122-85 Group G25 INTERSTATE STANDARD DIAMOND GRINDING HEADS Technical conditions Diamond grinding points. Specifications OKP 39 7117, 39 7217, 39 7127, 39 7227 Date of introduction 1987-01-01

GOST 14953-80 Conical countersinks. Technical specifications Date of introduction 1982-01-01 Information data 1. DEVELOPED AND INTRODUCED by the Ministry of Machine Tool and Tool Industry of the USSR 2. APPROVED

GOST 427-75 Group P53 INTERSTATE STANDARD MEASURING METAL RULERS Technical conditions Measuring metal rules. Basic parameters and dimensions. Specifications MKS 17.040.30 OKP 39 3631

GOST 2310-77 Steel hammers. Technical specifications (with Amendments No. 1-4) Date of introduction 1980-01-01 Information data 1. DEVELOPED AND INTRODUCED by the Ministry of Machine Tools and Tools

UDC 621.643.4-762:006.314 Group G17 STATE STANDARD OF THE UNION OF SSR METAL FLAT SEALING GASKETS FOR CLOSED VALVE CONNECTIONS OKP 10 6745 Technical specifications Sealing metal flat

GOST 10494-80 Group G18 INTERSTATE STANDARD STUDS FOR FLANGED JOINTS WITH LENS SEAL AT OVER 10 TO 100 MPa (OVER 100 TO 1000 kgf/cm) Specifications Studs for flanged connections

GOST 397-79 M E F G O S U D A R S T V E N N Y S T A N D A R T SPINTS TECHNICAL CONDITIONS Official publication Moscow Standardinform 2006 buy blouse Group G36 M E F G O S U D A R S T V E N Y

G O U D A R S T V E N Y S T A N D A R T SO YUZA SSR DISC MILLS DOUBLE AND THREE SIDED WITH INSERTED KNIVES EQUIPPED WITH CARBIDE ALLOY TECHNICAL CONDITIONS GOST 5808-77 IPK PUBLISHING HOUSE

GOST 2209-90 M E ZH G O S U D A R S T V E N N Y S T A N D A R T BRAZED CARBIDE PLATES FOR CUTTING TOOLS TECHNICAL CONDITIONS Official publication Moscow Stamdartinform 2006 water supply project

GOST R 50642-94 (ISO 255-90) state standard of the Russian Federation BELT DRIVE PULLEYS SYSTEM BASED ON INITIAL WIDTH GEOMETRIC CHECKING OF GROOVES Official publication

GOST 10047-62 Cutters made of high-speed steel. Technical specifications Date of introduction 1963-01-01 Information data 1. DEVELOPED AND INTRODUCED by the Ministry of Machine Tool and Tool Industry

GOST 20821-75 Double row thrust radial ball bearings with a contact angle of 60. Technical specifications Adopting body: State Standard of the USSR Date of introduction 07/01/1976 By resolution of the State Committee

GOST 9592-75 Radial ball bearings with a protruding inner ring. Technical specifications Adopting body: State Standard of the USSR Date of introduction 01/01/1977 By resolution of the State Committee of Standards

GOST 434-78 STATE STANDARD OF THE UNION OF THE SSR RECTANGULAR WIRE AND COPPER BUS BAR FOR ELECTRICAL PURPOSES TECHNICAL CONDITIONS Valid from 01.01.77 to 01.01.94 This standard is extended

GOST 1465-80 Files. Technical conditions. Validity period from 01/01/81 in part of section 2 - from 01/01/84 to 01/01/96* * The validity period was removed according to Protocol No. 5-94 of the Interstate Council for Standardization,

CYLINDRICAL CUTTERS TECHNICAL CONDITIONS GOST 29092-91 CYLINDRICAL CUTTERS Specifications Cylindrical milling cutters. Specifications GOST 29092 91 OKP 39 1832 Date of introduction 01/01/93 This standard

GOST 9650-80. Axles. Technical specifications (with Amendments No. 1, 2) INFORMATION DATA 1. DEVELOPED AND INTRODUCED by the USSR State Committee for Standards EXECUTORS V.Ya. Kremyansky, Ph.D. tech. sciences (head

GOST R 50642-9 4 (ISO 2 5 5-9 0) STATE STANDARD OF THE RUSSIAN FEDERATION BELT DRIVE PULLEYS SYSTEM BASED ON THE ORIGINAL WIDTH GEOMETRIC CHECKING OF GROOVES Official publication

GOST 13344-79. Waterproof cloth sanding paper. Technical conditions. (with Amendments No. 1, 2, 3) Date of introduction 1981-01-01 Information data 1. DEVELOPED AND INTRODUCED by the Ministry of Machine Tool Industry

GOST 9942-90 Single spherical thrust radial roller bearings. Technical conditions Adopting body: State Standard of the USSR Date of introduction 07/01/1991 INFORMATION DATA 1. DEVELOPED AND INTRODUCED by the Ministry

G O S U D A R S T V E N N Y S T A N D A R T S O Y U S A S S R C O M I M E R E S S BOELS FOR 16-MM FILM FILM GENERAL TECHNICAL. CONDITIONS GOST 9615-79 Official publication STATE COMMITTEE OF THE USSR

GOST 1284.1-89 (ISO 1081-80, ISO 4183-80, ISO 4184-80) INTERNATIONAL STANDARD DRIVE BELTS WEDGE NORMAL X SECTIONS MAIN DIMENSIONS AND CONTROL METHODS Official publication

UDC 669.3-426:006.354+669.3-418.2:006.354 Group E41 M E F G O S U D A R S T V E N N Y S T A N D A R T RECTANGULAR WIRE AND COPPER BUS BAR FOR ELECTRICAL PURPOSES OKP 18 4000 GOST Technical

GOST 7948-80 UDC 531.719.31:006.354 Group Zh36 STATE STANDARD OF THE UNION OF THE SSR Steel construction plumb lines Technical conditions Steel construction plumb-lines. Specifications OKP 48 3328 Date of introduction

STATE STANDARD OF THE UNION OF THE USSR RULERS MEASURING METAL TECHNICAL CONDITIONS GOST 427-75 PUBLISHING HOUSE OF STANDARDS MOSCOW STATE RULES S R

GOST 84.1-89 (ISO 1081-80, ISO 4183-80, ISO 4184-80) INTERNATIONAL DRIVING V-BELTS OF NORMAL SECTIONS MAIN DIMENSIONS AND METHODS OF CONTROL Official publication IPC PUBLISHING INDUSTRY

INTERSTATE STANDARD GOST 21963-2002 (ISO 603-15-99, ISO 603-16-99) CUT-OFF CIRCLES TECHNICAL CONDITIONS INTERSTATE COUNCIL FOR STANDARDIZATION, METROLOGY AND CERTIFICATION Minsk Preface 1 DEVELOPED

GOST 112573 M E ZH G O S U D A R S T V E N N Y S T A N D A R T BOLLDS TECHNICAL CONDITIONS IPC PUBLISHING HOUSE OF STANDARDS MOSCOW M E ZH G O S U D A R S T A N D A R T BOLLDS Technical

GOST 9399-81 Group G18 INTERSTATE STANDARD THREADED STEEL FLANGES FOR 20-100 MPa (200-1000 kgf/cm) Technical conditions Threaded steel flanges for Pn 20-100 MPa (200-1000 kgf/cm). Specifications

GOST 2 4 7 5-8 8 M E F G O S U D A R S T V E N N Y S T A N D A R T WIRES AND ROLLERS TECHNICAL CONDITIONS Official publication IPK PUBLISHING HOUSE OF STANDARDS Moscow concrete strength measurement UDC 531.717 .351:006.354