The triangle belt has two kinds of special belt core structure and rope core structure, which are respectively composed of four parts: covering cloth, top rubber, tensile body and bottom rubber. The V-belt with rope core structure is easy to manufacture, has average tensile strength and low price, and is widely used.
The models of the V-belt are: ordinary OABCDE 3V 5V 8V, ordinary enhanced AX BX CX DX EX 3VX 5VX 8VX, narrow V-belt SPZ SPA SPB SPC, strong narrow V-belt XPA XPB XPC; each model of the V-belt specifies the triangle The section size of the belt, the section size of the A-type triangle belt is: the top width is 13mm and the thickness is 8mm; the section size of the B-type triangle belt is: the top width is 17MM and the thickness is 10.5MM; the section size of the C-type triangle belt is: the top The width is 22MM and the thickness is 13.5MM; the section size of the D-type V-belt is: the top width is 21.5MM and the thickness is 19MM; the section size of the E-type V-belt is: the top width is 38MM and the thickness is 25.5MM. Corresponding size (width*height): O(10*6), A(12.5*9), B(16.5*11), C(22*14), D(21.5*19), E(38*25.5).
The national standard stipulates that there are seven types of V-belts: O, A, B, C, D, E, and F, and the corresponding pulley groove angles are 34°, 36°, and 38°. The minimum diameter of the small pulley corresponding to each pulley groove angle, the large pulley is not specified. The groove angle of the pulley is divided into 32 degrees, 34 degrees, 36 degrees and 38 degrees. The specific selection should be selected according to the groove type and reference diameter of the pulley; the groove angle of the pulley is related to the diameter of the pulley, and the groove angle of different types of pulleys is different The recommended pulley groove angles under the diameter range are as follows: O-type pulley is 34 degrees when the pulley diameter is in the range of 50mm to 71mm; 36 degrees when the diameter of the pulley is 71mm to 90mm; 34 degrees when the diameter range is 71mm~100mm, 36 degrees when 100mm~125mm; 38 degrees when >125mm; 34 degrees when the diameter of the B pulley is 125mm~160mm; 36 degrees when the diameter of the pulley is 160mm~200mm , 38 degrees when >200mm; C-type pulley is 34 degrees when the diameter of the pulley is 200mm ~ 250mm, 36 degrees when 250mm ~ 315mm, 38 degrees when >315mm; D-type pulley is in the pulley diameter range of 355mm 36 degrees when ~450mm, 38 degrees when >450mm; 36 degrees when E-type 500mm ~ 630mm, 38 degrees when >630mm.
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