Packaging & Delivery:

Packaging Detail:Normal export carton

Delivery Detail:30days after receving payment

For ease of comparison with sliding bearings, ball bearing frictional moment can be bearing diameter calculation by the following formula:

 M=uPd/2

 Here,

M: friction torque, mN.m

U: friction, table 1

 P: bearing load, N

 D nominal internal diameter of the bearing, mm

friction coefficient u type by bearing, bearing load, speed, lubrication, etc. larger General conditions stable rotation coefficient of friction when the reference values as shown in table 1.

 For a plain, ordinary u = 0.01-0.02, sometimes 0.1-0.2.

 All kinds of bearing friction coefficient u

U type friction bearings

      deep groove ball bearings 0.0010-0.0015

      angular contact ball bearings 0.0012-0.0020

      self-aligning 0.0008-0.0012

      cylindrical roller bearings 0.0008-0.0012

      full complement needle roller bearings-0.0025-0.0035

      needle roller bearings with cage 0.0020-0.0030

      tapered roller bearings, spherical roller 0.0017-0.0025