SprocketsThe main forms of failure of chain drives are as follows:
(1) Fatigue damage of chain plate The chain plate will be damaged by fatigue after a certain number of cycles under the repeated action of loose side tension and tight side tension. Under normal lubrication conditions, fatigue strength is the main factor limiting the load-bearing capacity of chain drive.
(2) roller sleeve impact fatigue damage chain drive into the impact first by the roller and sleeve to bear. In repeated impact, after a certain number of cycles, the roller and sleeve will occur impact fatigue damage. This form of failure occurs in the middle and high-speed closed chain drive.
(3) Gluing of the pin and sleeve When the lubrication is improper or the speed is too high, the working surface of the pin and sleeve will be glued. The gluing limits the limit speed of the chain drive.
(4) Wear of chain hinge The hinge is worn out and the links become longer, which will easily lead to jumping teeth or disengaging the chain. When open drive, poor environmental conditions or poor lubrication and sealing, it is easy to cause hinge wear, which will sharply reduce the service life of the chain.
(5) Overload pull off This pull off often occurs in the transmission of low-speed heavy load or severe overload.