I, bearing breaking cause of defects and overload two factors when plus loads more than material fracture strength limit resulting parts called the overload fracture, TIMKEN bearings overheating can also occur in the course of running organizations and local defects such as burns, defects caused by faults.
From the perspective of using to pay attention to the following several points:
1, selection of oils: oils are generally chosen on the basis of TIMKEN bearing speed, temperature, noise requirements and starting torque of choice requires knowledge about the various properties of the grease is.
2, selection of bearing type a, b, c: TIMKEN bearing lubrication can be divided into the lubricating oil and grease. Oil-lubricated bearing selection form bearing, grease lubricated bearings are generally use rubber seals shields or seals. Shields for high temperature or use good parts, sealing-contact seals and two non-contact seal, contact sealed, dustproof performance is good but the torque, torque from the non-bonded seal is small, but good sealing properties of no-contact.
3, the choice of bearing type: the bearing designation is typically based on the conditions of use of supporting products and choose load for TIMKEN bearings. So you must understand whether a user's actual load is related to the selected bearing in line if the bearing does not meet the requirements, should be elections as soon as possible models, but unless special products generally do not have problems in the selected model.
4, bearing clearance selection: at the time of purchase bearing generally will only inform on what type, grade, rarely claim on TIMKEN bearing clearance, business people must ask bearing conditions of use, speed, temperature, combined with tolerance of the bearing of which are directly related to the selection of bearing clearance. General below 3,500 rpm rotational speed of the motor they use CM clearance, such as high temperature and high speed motor requires a relatively large clearance. Bearing clearance after Assembly is large and cylindrical hole up in narrow and lead to a reduction, clearance reductions interference = x60% (except for the bearing housing is aluminum). Such as bearing clearance before Assembly is 0.01mm, Assembly interference of 0.01mm, the clearance of 0.004mm bearing Assembly. Zero clearance is in theory bearing in noise and life to achieve the best State, but in practice take into account issues such as temperature rise in operation, bearing clearance after Assembly is 0.002mm-0.004mm better.
II, bearing in running process in the, sometimes TIMKEN bearing surface Zhijian will squeeze into external hard particle or hard mass foreign body or metal surface of mill chip, this will is bearing caused plow ditch shaped of abrasions, these hard foreign body through lubrication media entered bearing internal, as bearing of constantly running, local friction health hot, easy caused friction surface local deformation and friction micro welding collection phenomenon, even may appears local melted of situation, last caused occlusal phenomenon.


Other News:
TIMKEN bearings operate common faults and solutions
FAG bearing installation notes
Support issues related to INA bearing
TIMKEN bearing Assembly process points analysis
NSK bearing deprivation and countermeasures
INA bearings radial clearance when installing how to
SKF bearing installation occurs when scar treatment methods
Notices again using TIMKEN bearings