Belt pulley failure/repair method

A. Loose
Jaw crusher pulley with a long time loose is a normal phenomenon (because the wheel is cast iron, the shaft is tempered forged steel, a soft and a hard, and the machine vibration, if the foundation or installation is a little bad, swing is also larger, generally by increasing the inner diameter of the wheel plus the set or reduce the diameter of the shaft plus the set to solve.);
Causes:
- the shaft and the pulley match problem;
- the foundation is poor, the machine swing too much; external impact.
B. Rupture
The rupture of the pulley with normal quality usually occurs after many years, and mostly because of impact.
Causes:
- the pulley is too loose or has cracks in itself;
- Injury producing cracks;
- the machine base is too poorly installed, swinging too much;
Repair method
It is recommended not to weld, if the impact of production directly replace the wheel, cast iron welding is easy to crack, it is difficult to meet the requirements of the wheel at high speed, the accident is not worth the loss.