Introduction to the performance of plastic cage

Flexibility in product design

Plastic cage can be directly injected into the complex shape of the structural form, it is easy to optimize the design of bearings.Plastic retainer can be equipped with oil groove in the window hole and inside and outside diameter to facilitate oil storage, thus greatly improving the lubrication conditions of bearings.

The centrifugal force of the cage is small

The density of plastic is low, only about 1.3. Copper is 8.9.In high speed rotating bearings, the plastic cage has low centrifugal force, low starting torque and flexible bearing rotation.

Resistance to friction and wear, low temperature rise of bearing

Friction occurs between the rolling body and the retainer pocket during bearing operation. The friction coefficient between steel and nylon is much smaller than that between steel and copper.Therefore, the starting torque of plastic cage bearing is smaller than that of metal cage bearing, which is conducive to reducing the generation of friction heat.Especially under the condition of boundary lubrication, the plastic cage bearing has better self-lubrication performance and is not easy to be stuck suddenly when the bearing is in low oil or broken oil.

Plastic cage has good toughness, impact resistance and fracture resistance

Plastic retainer has better plastic to fight damage ability than metal retainer, when metal retainer is hit seriously, can produce permanent deformation or fracture, and plastic retainer suffers external force temporarily after deformation, reliable its flexibility restores original state, because this plastic retainer is more easy to damage.

Acid and corrosion resistance

The acid and corrosion resistance of engineering plastics is obviously better than that of metals.