In fact, the early damage of the sliding bearing of the automatic feeding mixer is more common than the burning of the bearing, so it is very important to prevent the early damage of the sliding bearing.
Under the repeated action of the cylinder pressure impact load, the surface of the sliding bearing undergoes plastic deformation and cold work hardening, partially losing the deformation ability, gradually forming stripes and expanding, and then forming voids in the stress surface with the falling of the wear debris.
Generally, when pitting occurs on the bearing bush, pitting occurs first, and then gradually expands, resulting in the interface cracking of the alloy layer. The crack propagates along the parallel direction of the interface until it peels off.
The main reason for the cavitation of sliding bearing is that the sudden change of the cross section of structural elements such as oil groove and oil hole leads to the strong disorder of oil flow, forming bubbles in the disordered vacuum zone, and then cavitation occurs due to the collapse of bubbles due to pressure rise. Manufacturer of automatic loading mixer
Cavitation usually occurs in the high load area of the bearing, such as the lower bearing shell of the crankshaft main bearing. The bearing outer ring is the relative rotation of the bearing in the seat hole. After the bearing passes through the outer ring, it will not only affect the heat dissipation of the bearing, but also easily cause alloy corrosion on the inner surface of the bearing, and will damage the back of the bearing, which will burn the bearing in serious cases. The main reason is that the bearing is too short, the tenon is damaged, and the processing or installation does not meet the specifications.
The correct maintenance of sliding bearings is an effective way to reduce the early damage of bearings, and is also a reliable guarantee to extend the service life of bearings. Therefore, in the daily maintenance and repair of the engine of the automatic feeding mixer, it is necessary to pay attention to the appearance and shape of the alloy surface, bearing back, end and corner.
If there are abnormal signs or more than half of the wear, it is necessary to carefully find out the cause, take corresponding measures to improve the working conditions of the bearing, and pay attention to prevent the early damage of the sliding bearing. For more matters related to the mixer, please visit our website http://www.zkzsljbc.com consulting service