61905-2RS Hybrid Ceramic Ball Bearing 25x42x9 Sealed Si3N4 Bearing 90x140x24 the 5311 inner diameter is

the 5311 inner diameter is 55mm

Width: 23mm

and low friction

✅ Dynamic load rating: 28

and zero contamination

61905-2RS Hybrid Ceramic Ball Bearing 25x42x9 Sealed Si3N4 Bearing 90x140x24 the 5311 inner diameter is61905 2RS Hybrid Ceramic Ball Bearing C3 Chrome Steel and Ceramic Balls 61905 2RS Hybrid ceramic chrome steel sealed bearing with Si3N4 Ceramic Balls Electric motor quality, 61905 2RS is commonly used in industrial, commercial, and mechanical systems, each 61905 2RS bearing is closed with 2 Rubber Seals, bearing is double sealed and one seal from each side to protect the bearing from dust or any possible contamination, also bearing is pre lubricated