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SKF high rotation accuracy of bearing configuration (such as machine tool spindle) and application in high speed condition, bearing should choose higher accuracy than normal. Can provide a variety of high precision bearings, including the single row angular contact ball bearings, single and double row cylindrical roller bearings, and the unidirectional and bidirectional angular contact thrust ball bearing
Bearing speed:
Rolling bearing speed by allowable working temperature limit. FAG bearing low friction, the heat generated inside the corresponding is lower, so the most suitable for high speed operation. Deep groove ball bearings, self-aligning ball bearings under purely radial load, or angular contact ball bearing in joint under load, compared with other bearing, can bear high speed. But with the ceramic roller precision angular contact ball bearings or deep groove ball bearings, and can achieve higher speed. Due to the reasons for the design, thrust bearing speed not as high radial bearing.
NSK bearing in the maintenance, grease too much actually has a lot of harm. Because the grease has good adhesion, abrasion resistance, heat resistance, anti-rust and lubrication, can improve the high temperature oxidation resistance, delay aging, can be dissolved carbon, prevent metal wear debris and oil crystallization, improving the corrosion resistance of mechanical wear resistance, pressure resistance and.
If the amount of grease filled more, friction torque would be more big. The same filling amount, the friction torque of sealed bearing more than open bearing. After grease filling amount equivalent to TIMKEN bearing internal space volume 60%, friction torque and no longer increases significantly. This is because the grease open bearings have been largely extrusion, and sealing grease type of bearing has the leakage reason. With the increase of amount of grease filled bearing temperature, linear increase, the same filling amount, but higher than the open bearing sealed bearing temperature rise. Generally, grease sealed bearings filling amount, shall not exceed the internal space of about 50%. Ball bearing with 20% to 30% is the most appropriate.
A KOYO bearing accuracy and speed is the most important, that what they refer to the bearing, to explain.
Contact fatigue failure refers to the working surface of bearing under alternating stress arising from failure. Contact fatigue spalling in INA bearing surface, often accompanied by fatigue crack, first from the contact surface following the largest alternating shear stress, and then extend to the surface to form different flake shape, such as point to point pitting or pitting flaking, peeling into small flakes shallow spalling. Due to the peeling surface gradually expanded, and often deep extended, forming deep spalling. Deep contact fatigue failure fatigue spalling is source of.
Adhesive wear is due to friction surface microscopic bumps or foreign body so that the friction surface uneven stress, the lubrication condition worsens, because of local friction heat, easy to cause the friction surface of local deformation and friction micro welding phenomenon, serious when the surface of the metal may be partial melting, the contact surface force local friction welding point tearing from the matrix and the increase of plastic deformation. The circular process adhesive -- tear -- adhesion of adhesive wear, in general, mild adhesive wear called abrasion, adhesion wear that serious to bite.
| Product Model | Inside Diameter | Outside Diameter | Thickness |
| 32909XU NTN | 45 | 68 | 15 |
| 4T-32308C NTN | 40 | 90 | 33 |