R166ZZ is an inch sizes miniature deep groove ball bearing with metal double shielded. Its bearing ring is made of 52100 chrome steel (Gcr15), and bearing cage and shields are made of 300 series stainless steel.

The dimensions of R166ZZ bearing are 3/16 x 3/8 x 1/8 Inch (0.1875" x 0.375" x 0.125"). Its inner bore diameter is 3/16 inch (0.1875”), outer diameter is 3/8 inch (0.375”), bearing thickness is 1/8 inch (0.125”). The tolerance of bore and outer diameter is -0.0003" to 0", and the tolerance of width is -0.005" to 0". R166ZZ is an MC3 grade miniature ball bearing, its radial clearance is 0.00008" to 0.0005". There are 8 pieces of steel balls in the cage assembly, the cage material is stainless steel, and the ball size is 0.06252 inch. The net weight of R166ZZ is 0.85 gram approximately.

R166ZZ is a single row radial load miniature deep grooved ball bearing, with a Cr (Continuous Rating) dynamic load of 136 lbf and a Cr static load of 49 lbf. Lubrication is required for smoother and long-term operation, with light oil lubricating its rotating max speed can reach up to 50,000 rpm. It is suitable to work in a temperature condition between -86 to 230 °F.

Fitrun Bearing is a professional manufacturer of miniature ball bearings with 20 years bearing manufacturing experience in China. We can customize the bearing to fit your special applications. Huge stock, fast delivery, high quality and competitive prices are what we offer to you. Please contact us to get a free and quick quotation today.