High-speed bearing, usually the Dmn value FAG Bearing http://www.fagsupply.com/ more than 1.0 X106mm. Known as the high speed bearing of the rolling bearing in the r/min. Here the average diameter of Dm for rolling bearing, n is the speed of the inner ring. In practice, high-speed imported bearings of Dmn value has reached 3.0 X106mm. R/min.



Rolling bearing high speed movement has a great influence on the strength of its life and the centrifugal force, so often on high-speed bearing structure design to reduce the quality of the rolling element is used to improve the performance, namely choose light and ultra light diameter series, or use ceramic ball rolling body.



High-speed bearing cage multi-purpose phenolic laminated plastic cloth cage, polyimide, or bronze entities, to reduce the friction heat, can also be silver plated on the surface of the guide.



When choosing high-speed bearing, appropriate chooses the P2 and P4 precision grade, for the formation of elastic hydrodynamic lubrication. Overloading the large and medium-sized imported bearing, using spray lubrication; Light high speed small or miniature bearing, lubrication oil mist lubrication and oil and gas. But the cost of three kinds of lubrication oil lubrication is highest, the lowest cost of oil mist lubrication, lubrication oil and gas is the new way of lubrication developed in recent years, its fundamental difference is that with oil mist lubrication can control the right amount of oil. High-speed bearing generally choose low viscosity lubricating oil.



High-speed bearing life with Dmn (sometimes with dn, d for bearing inside diameter, n bearing rotating speed) as the value increases fell sharply, the failure modes is given priority to with fatigue damage, followed by cage guide surface caused by friction heat burns, maintains a fracture, and so on and so forth.



Shoulder fixed

Bearing inner ring axial fixation rely on the shoulder and interference.

Applicable to both ends fixed supporting structure.

Simple structure, small outer profile size.



Elastic ring fixed

Bearing inner ring by the shoulder and lock nut axial fixation.

Affordable small two-way axial load.

Axial structure size is small.



Lock nut is fixed

Bearing inner ring by the shoulder and lock nut axial fixation. And a lock washer with locking, safe and reliable, suitable for high speed and overloaded.



Fixed end thrust washer

Bearing inner ring by the shoulder and shaft end ring axial fixation. Shaft end ring on the shaft end with screws. Set screw should be locking device.

Should not be applicable to the shaft end cutting thread or space limit.



Sleeve is fixed

Set set of inner hole of the radial dimension is compressed and clamped on the shaft, to realize the bearing inner ring axial fixation.



Withdrawal of fixed

Withdrawal of the same as the set set of clamping way. But withdrawal sets with special nut, bearing loading and unloading of convenient, suitable for radial load is bigger,

Double row spherical bearing axial load of smaller fixed on the optical axis.