7PK1625 Fits for 96 - 03 BMW 540i M5 X5 740i 840Ci 4.4L GAS DOHC Serpentine Belt K070640

Application Serpentine Belt for:

What is Pk Belt

V-ribbed belt refers to the ring rubber belt with flat belt as the base, while the inner surface of the arrangement with equal spacing of 40 ° trapezoidal wedge, its working face is the side of the wedge. We use PK belt to transmit the power among the crankshaft pulley, AC compressor pulley(fan), tension pulley, water pulley, alternator, hydraulic pump…These parts are separated to each other, it is this piece of belt to make them work together.

Compared to V belt, V-ribbed belt has many advantages. V-ribbed belt has more transmission power, almost 30% higher than the ordinary V-belt when at the same space. V-ribbed belt makes the transmission system compact, and the space that the transfer device takes is 25% lower than ordinary V-belt under the same transmission power. With thin body and rich flexibility, it is able to adapt to the small-diameter pulley drive and could also drive multiple wheels at the same time. Besides, it adapts to high-speed transmission, the speed could be as fast as 40m/s; what's more, the belt has such advantages as small vibration, less heat and smooth operation. And its resistance to heat, oil and abrasion ensures its small elongation in use and long life.

Precautions for the use of V-ribbed belt

1. When the belt is exposed to oil or water in use, it is suggested to clean or dry it up immediately;

2. The wrap angle is too small, it is suggested to change the position of the wheel on the reverse side so as to increase the angle;

3. The tension of the belt is too small, it is suggested to enhance the tension;

4. V-ribbed belt makes noise in use

The belt skids in use, it is suggested to dry it up in time; The wedge of the belt is inserted with something, it is suggested to add a protective cover for the transmission of the belt; The belt wheel position deviated, it is suggested to modulate it.

5. Large vibration of the belt in use, it is possible that the tension of the belt is too small, it is suggested to enhance it.

PK belt produced by Maojia Industry

We use EPDM (Ethylene-Propylene-Diene Monomer) to make PK belt as EPDM, compared with CR,has higher resistance to stress, abrasion, erosion, oil and aging as well as low noise. Tensile strength of the synthetic fiber polyester is high and its fatigue lifetime is long, which provides the belt with good heat resistance so as to maintain stabilized tension. Besides, with higher transmission power, thin body and rich flexibility, it is not only used for pulleys with small diameter, but high-speed transmission.