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1, the friction compatibility
Shaft and the bearing to prevent direct contact adhesion and the formation of boundary lubrication properties.
2, embeddedness
Plain bearings usually softer material with hard pieces of friction material, generally made with softer material bearing.
3, conformability
In the running-in process and the bearing shaft, the shaft and bearing reduce the machining error, concentricity error, the surface roughness parameter value to make uniform contact, thereby reducing friction and wear rate capability.
4, wiping compliance
Materials by surface plastic deformation compensation initial sliding friction surface and shaft deflection with the poor performance. Low modulus of elasticity of the material better compliance.
5, bearing wear
Vice material to resist wear and tear into the ability The required wear conditions, the wear rate or the degree of wear with a wear amount expressed as the inverse wear resistance.
6, fatigue resistance
Materials under cyclic loading ability to resist fatigue failure.
7 and corrosion resistance
Solid relative to the liquid state of the movement, when the bubbles in the liquid near the surface of the solid is broken, resulting in local pressure or local temperature shock will cause cavitation wear.
8, the compressive strength
Withstand the load without being squeezed bad way or size change.
| Product Model | Inside Diameter | Outside Diameter | Thickness |
| 7321BDB NSK | 105 | 225 | 49 |
| 7321ADB NSK | 105 | 225 | 49 |