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The carrying capacity of the bearing, rotating precision and friction-reducing features such as change, when a TIMKEN bearing performance indicator is lower than when using the request does not work properly, it is called bearing damage or failure, once the bearing is damaged when an unexpected situation occurs, there will be machines, equipment stops, features various anomalies, such as injury. Therefore needs in short-term within investigated bearing occurs injury of causes, and take corresponding measures, course, scroll bearing damaged of situation than General machinery parts of damaged to complex was more, scroll bearing damaged of features is performance forms more, causes complex, bearing of damaged in addition to bearing design and manufacturing of inherent factors outside, most is due to using improper, such as: selection cloth for, and supports design does not reasonable, installed improper, lubrication bad, sealed bad, external factors caused of.
Greater the rigid housings, rolling road, lower the overall sound pressure level of sound. Such as the radial clearance is too small, rolling road sound of a sound pressure level and main frequency will increase sharply as the reduction in radial internal clearance. Control of Raceway acoustic methods are: selection of low noise bearings which small waviness TIMKEN bearings, carefully select the use conditions. Rolling road sound often affects the entire mechanical noise, Raceway reduction can reduce the noise of machinery as a whole.
Impact sound and its control method of rolling ball or cylindrical roller bearings with larger models under purely radial load and low speed operation, due to the centrifugal force of the rolling small impact load-free area in the rolling will roll cage or road noise. But as the speed increases, this noise will disappear. On the rolling control method for impact sound: appropriate reduction of radial clearance, reasonable structure and materials: soft cage of TIMKEN bearings. Creak of the bearing and its control method creak cylindrical roller bearing can happen on all occasions of the harsh metal sound, mostly in the larger models bearing grease lubrication, and deterioration of the base oil are more likely to occur in the grease, oil lubrication does not happen almost.
Oily TIMKEN bearings as the basis for electrical and mechanical parts have been widely used in automobiles, machinery, home appliances products, power tools, audio equipment, a wide range of industries, such as computer-related equipment. Different working conditions on the bearings make a variety of different materials and performance requirements, for example, General Electric tool with oil-impregnated bearings has special requirements for abrasion resistance, sound mechanical bearings you need lower coefficient of friction, and so on.
TIMKEN bearings due to motor casing after the paint dried, chemical constituents of volatile corrosion Plummer's face, ditch and gully, corrosion causes the channel to be exceptions that occurred after the sound. Bearing surface after corrosion rust more serious than the first. Caused by the bearings or grease cleanliness, issued an irregular abnormal tone. Sounds even there is even no, large small no rules when, on the high speed motor-prone. Installation method of the bearing, bearing structure, fit, vary depending on the conditions, in General, due to rotate, so the interference fit is required for the inner rings. Bearings with a cylindrical bore and more with presses onto, or multiple-use and charging methods. Tapered bore, mounted directly on tapered shaft or sleeve installation. When you install into the shell, General clearance, there is interference in the outer ring, normally, the pressure into pressure, or have installed after the cooling methods of shrink fit. Using dry ice as a cooling agent, shrink fit occasion, moisture in the air will condense on the bearing surface. So, you need appropriate antirust measures.
| Product Model | Inside Diameter | Outside Diameter | Thickness |
| RLM5020 NSK | 50 | 60 | 20 |
| RLM475730-1 NSK | 47 | 57 | 30 |