Belt Pulley size
The size of the pulleys is large and small, and the manufacturing method is also different depending on the size. The larger pulleys are mostly cast, while the smaller pulleys are forged. Pulleys are also very common in people’s life, whether they are tractors, generators, agricultural or miners, etc., they need to use pulleys for transmitting power.
The belts are mostly V-belts. The specifications of the national pulleys are divided into A, B, C, D, E, O and other models, which are determined according to the different sizes of the back width and height of the pulley.
The A-type pulley has a width of 12.5 mm, a height of 9 mm, a tip width of 13 mm, and a thickness of 8 mm;
The B-belt has a width of 16.5 mm, a height of 11 mm, a tip width of 17 mm and a thickness of 10.5 mm;
C-type pulley has a width of 22 mm, a height of 14 mm, a top width of 22 mm and a thickness of 13.5 mm;
The D-type pulley has a width of 21.5 mm, a height of 19 mm, a tip width of 21.5 mm, and a thickness of 19 mm;
The E-type pulley has a width of 38 mm, a height of 25.5 mm, a top end width of 38 mm, and a thickness of 25.5 mm;
The O-belt has a height of 10 mm and a height of 6 mm.
Different types of pulleys,Belt Pulley Size are also different, mainly divided into ordinary type, ordinary reinforced type, narrow V belt and strong narrow V belt. The common type includes A, B, C, D, E, O, 3V, 5V, 8V, and the common enhancement type includes AX, BX, CX, DX, EX, 3VX, 5VX, 8VX, and the narrow V-belt includes SPZ, SPA, SPB, SPC, strong narrow V-belt including XPA, XPB, XPC.

Different types of pulleys,Belt Pulley Size is also different . The general pulley wheel groove angles are 34 degrees, 36 degrees, and 38 degrees, respectively.
The pulley radius of the O-belt is 34 degrees from 25 mm to 35.5 mm; 36 degrees from 35.5 mm to 45 mm, and 38 degrees from 45 mm;
The pulley radius of the A-type pulley is 34 degrees from 35.5 mm to 50 mm, 36 degrees from 50 mm to 62.5 mm, and 38 degrees when it is greater than 62.5 mm;
The pulley radius of the B-type pulley is 34 degrees from 62.5 mm to 80 mm; 36 degrees from 80 mm to 100 mm, and 38 degrees when it is greater than 100 mm;
The pulley radius of the C-type pulley is 34 degrees from 100 mm to 125 mm, 36 degrees from 125 mm to 157.5 mm, and 38 degrees when it is greater than 157.5 mm;
The pulley radius of the D-type pulley is 36 degrees from 157.5 mm to 225 mm, and is 38 degrees when it is greater than 225 mm;
The pulley radius of the E-type pulley is 36 degrees from 250 mm to 315 mm, and is 38 degrees when it is larger than 315 mm.
Care should be taken when installing the pulley to ensure that the surface of the pulley is not scratched, and that the dimensions of the pulley are strictly in accordance with the standard, and the relevant precautions should be observed in terms of installation and disassembly, the belt pulley should be dry, And the degree of cleanliness.

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