MR63ZZ is a micro deep groove ball bearing with metal double shielded. Its bearing ring is made of 52100 chrome steel (Gcr15), and bearing cage is made of stainless steel. Its stainless steel version is SMR63ZZ, which the ring material is made of 440C stainless steel. MR63ZZ is a single row construction ball bearing with 8 pcs of steel balls assembled with the cage. The ball size is 0.8 mm in diameter. The bearing net weight is only 0.28 gram.

MR63ZZ is a metric size micro ball bearing with a dimension of 3x6x2.5 mm. Its bore diameter is 3 mm, outer diameter is 6 mm, and width is 2.5 mm. It is an ABEC-1 grade ball bearing, the tolerance of bore and outer diameter is -0.008 to 0 mm, and the tolerance of width is -0.12 to 0 mm. Its radial clearance is 0.002 to 0.013 mm, which it is MC3 grade.

It can bear a dynamic radial load of 178 Newton, and a static radial load of 59 Newton. Lubrication is required, and with the oil lubricating its rotating max speed can reach up to 71,000 rpm. It is suitable to work in a temperature condition between -30℃ to 110℃.

With its micro size, high speed but lower load, MR63ZZ is widely used in applications like precision instruments and micro motors, etc. Fitrun Bearing is a professional manufacturer of micro ball bearings with 20 years bearing manufacturing experience. We can customize the bearing to fit your special applications. Please contact us to get a free and quick quotation for your custom bearings.