Produced with 52100 bearing steel, ball bearing inserts are used inside standard mounted units or in custom housed units. RBI Bearing manufactures mounted ball bearings in a multitude of sizes and configurations including Pillow Blocks, 2-Bolt Flange, 3-Bolt Flange, 4-Bolt Flange and Take Up housings. We offer Cast Iron, Stainless Steel, Thermoplastic or Pressed Steel housing for heavy, standard, sterile or light duty applications. We realize standard off-the-shelf bearings don’t work for every situation; we often produce custom bearings for our customers according to their drawing specs to fit a variety of applications.