With import retaining bearing speed increase, dense metal materials keep frame already cannot satisfy the requirements of all types of import bearings, and density of your metal is just 1/4 to 1/8, wear-resisting, seismic resistance, effectiveness against radiation, magnetic, corrosion resistant, low friction, together with other unique primary advantages of plastic, directly into rolling bearing keep frame materials imported the ranks. Phenolic laminated fabric material density is small, mechanical high strength, mechanical processing performance is sweet, have certain heat temperature and oil absorption, oil leakage, just like performance, have been completely widely utilized by 2 ~ 200 mm diameter of Angle contact ball bearing keep frame. Just like top speed grinding head bearing, machine tool bearing, instrument bearing, the gyro bearing, turbines bearing, supercharger bearing are adopted the phenolic laminated fabric material, which keep frame dn value is just as high as 12 x 106 mm r/min.

The metal cage to cannot match the requirements of your host occasions, plastic cage show special advantages. Like may not be permitted to use oil's liquid oxygen (183 ) are employed in the import bearings, with the stamping steel cage deep groove ball bearing 6204 in 100 kg axial load, 10000 r/min running under 16 min that burn, obese glass fiber reinforced plastic creation of ptfe keep frame Angle contact ball bearing, also in the 100 kg of this axial load, 20000 r/min running under 20 h, still no friction torque increase. Use mos2, ptfe, glass fiber modification of polyimide keep for bearing holder, radiation in vacuum without oil lubrication work, has been utilized while in the Apollo spacecraft. Porous oil polyimide keep rack in the long life bearing, gyroscope porous oil phenolic laminated fabric material rack in communications satellite to have the corporation, polyimide keep bearing rack in high-speed drill bearing, glass fiber reinforced polyamide 66 to keep the facing gear box, differential gear box, the clutch also, the wheel hub, water pump and mines through the delivery mechanism, a use effect is very good.