internal clearance: RBC Bearings KG180XP0 Four-Point Contact Bearings

inside diameter::18.0000 in; radial static load capacity::20050 lbf; outside diameter::20.0000 in; axial static load capacity::60140 lbf; overall width::1.0000 in; bearing material::Steel; internal clearance::C0; precision rating::ABEC 1 (ISO Class Normal&; closure type::Open; maximum rpm::630