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Standard based on mechanical performance and a significant degree of judgment and inspection cycle varies. If following injury, TIMKEN bearings shall not be reused and must be replaced.
A) faults and defects of bearings parts.
B) split of Raceway surface scroll surface.
TIMKEN bearings to be removed when checking, first with methods such as photographic appearance record. In addition, to confirm that the excess capacity of the lubricants and lubricants sample, and then clean the bearings.
A, TIMKEN bearings cleaning carried out in rough cleaning and washing, and can be used at the bottom of the container placed on the metal rack.
When b, heavy wash, brush clearing, such as in the oil grease or stickers. If rotating bearings in oil at this time, note that foreign body injuries, such as scroll bars will surface.
C, fine when washing, slowly turn the TIMKEN bearings in oil, be careful.
Cleaning agents are commonly used as neutral does not contain water, diesel or kerosene, sometimes using temperature as needed, such as lye. Regardless of what kind of cleaning agents, are often filtered clean. After cleaning, coating rust preventive oil on the TIMKEN bearings immediately or rust-inhibiting lipid peroxidation.
Good maintenance of the TIMKEN bearings, to extend its service life.
1, selection and control of shaft and housing tolerances: after bearings onto the TIMKEN bearings should rotate flexible sense of non-blocking. If there are clearly not flexible rotation, then axis dimensions are too big, the tolerance to cut. If the bearings onto the shaft by hand after turning there is a clear "rustle" sense, the tolerances of the shaft may be too large or the roundness of the shaft well. So when you control the shaft and housing tolerances you want to control the roundness, many domestic manufacturers currently control only tolerance, not to control the roundness.
2, bearings Assembly methods: because the bearings are high-precision products, such as improper Assembly can easily cause damage to the bearings Raceway, cause damage to the bearings. TIMKEN bearings Assembly should have dedicated mold, cannot be beat at will, force in pressing axis only small circles, pressing circle only large ring bearings. Assembly call for pneumatic or hydraulic, at the time of pressing die outside to level up or down status, such as tilt can cause mechanical damage of bearings Raceway and the bearings rings.
3, assembling foreign object prevention: bearings when mounted to the rotor dynamic balance easily produced when iron filings into the bearings dynamic balancing internal, it is therefore advisable to load dynamic balance before TIMKEN bearings. Some manufacturers for ease of Assembly, Assembly in the bearings room painted with some oil or grease lubrication effects, but in many cases the operator is difficult to control, if oil or grease in the bearings Interior accumulates more easily along the axis of rotation of the bearings into the bearings. Bearings room it is best not to paint oil or grease, such as non-coating is not available to control shall not be bearings Interior accumulates.
4 Prevention of rust, paint: paint and rust is characterized by multiple sealed-type motor, motor Assembly, sounds very good, but after some time within the warehouse, the electrical noise change very large, with serious rust removed bearings phenomenon. Many manufacturers are considered to be before bearings problems, through our advocacy, motor factory is now aware of the main insulation paint problems. Varnishes used for this issue mainly because of volatile acids under certain temperature, humidity of the formation of corrosive substances, corrosion and cause damage to the bearings TIMKEN bearings Raceway. The problem can only be good choice of insulating varnish, and assembled in the ventilation after drying after a period of time.
| Product Model | Inside Diameter | Outside Diameter | Thickness |
| 21317EAE4 NSK | 85 | 180 | 41 |
| 22217EAE4 NSK | 85 | 150 | 36 |