2 Bolt Flange Bearing Back Side to Center Width 0.875 in Bearing Insert Material Alloy Steel Bearing Insert Type Radial Ball Bore Diameter 1 15/16 in Bore Type Cylindrical Center Height 2 9/32 in Closure Single Sealed Expansion Type Fixed For Environment Highly Dusty and Dirty Housing Material Cast Iron Housing Type Rhombus Included Bearing WJB UC210-31 Insert Bearing Lubricant Material Chevron SRI 2 NLGI #2 Equivalent Maximum Speed 3 600 RPM Grease