2 Bolt Flange Bearing Back Side to Center Width 0.858 in Bearing Insert Material Alloy Steel Bearing Insert Type Radial Ball Bore Diameter 1 3/4 in Bore Type Cylindrical Center Height 2 3/16 in Closure Single Sealed Expansion Type Fixed For Environment Highly Dusty and Dirty Housing Material Cast Iron Housing Type Rhombus Included Bearing WJB UC209-28 Insert Bearing Lubricant Material Chevron SRI 2 NLGI #2 Equivalent Maximum Speed 3 800 RPM Grease