Bearings, as the main components of locomotives, especially traction motors and axle box bearings, play a crucial role in safe transportation. When locomotives run online, if bearings fail, it will cause the entire train to be unable to operate, block the main transportation line, especially for passenger trains. ..
When the rolling bearing rotates, the free vibration of the cage and its impact with the rolling elements or rings can cause noise generation.This type of noise may occur in various bearings, but the sound pressure level is low and low-frequency. Its characteristics are: a. Both stamped and plastic retainers may produce this noise.Both thin oil and grease lubrication will produce this noise...
Correctly grasping the usage location, usage conditions, and environmental conditions of self-aligning roller bearings in mechanical devices is a prerequisite for selecting suitable self-aligning roller bearings. To achieve this, it is necessary to obtain data and information in the following areas.Function and Structure of Mechanical Devices.Application parts of self-aligning roller bearings...
The cooling process after metal quenching is also an important cause of deformation. Hot oil quenching has less deformation than cold oil quenching, generally controlled at 100 ± 20 ℃. The cooling capacity of oil is also crucial for deformation.The stirring method and speed of quenching both affect deformation. The faster the cooling rate of metal heat treatment, the more uneven the cooling...