how to count ribs on a belt?pk belt dimensions

Pk belt, also known as multi wedge belt, is mainly used for transmission of power equipment such as engines and motors, and is widely used in the automotive and electromechanical industries. The material is generally neoprene and ethylene propylene diene rubber, with a thin belt body and rich flexibility, which is suitable for transmission with small pulley diameter and also for high-speed transmission. Heat and oil resistance, wear resistance, low elongation, and long service life. How to count ribs on a bed?pk belt dimensions。

pk belt dimensions

how to count ribs on a belt

The pk belt is a multi wedge belt, with a rib like pattern on it. Each pattern on the pk belt counts as a wedge, and 10 patterns are 10 pk.

Calculation and selection of the specification length of the pk belt

The specification length of the pk belt is calculated based on the geometric arrangement of the gear train. Since the effective length of the belt varies with the working angle of the tensioner, it is necessary to calculate a series of belt lengths corresponding to the tensioner at different working angles. The calculation results generally need to meet the following conditions: the belt length needs to monotonically increase or decrease as the working angle of the tensioner increases, and parabola shape is not allowed. From the calculated belt length results, select a belt length to determine the pk belt specification length, and determine the effective length of the pk belt.

Belt Life Estimation

The belt life is closely related to the operating environment and can only be estimated in general. Here is an introduction to the empirical formula of Gates Company

1) For inboard drive pulleys:

2) For rear drive pulleys:

(Where FR is the fatigue rate)

After calculating the fatigue rate of each accessory wheel under different working conditions using the formula, the total fatigue rate of the system can be obtained by summing.

Belt life:

"CP" refers to belt life and "EL" refers to belt length.

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