4 Bolt Flange Bearing Back Side to Center Width 1.22 in Bearing Insert Material Alloy Steel Bearing Insert Type Radial Ball Bore Diameter 2 in Bore Type Cylindrical Center Height 3 3/16 in Closure Single Sealed Expansion Type Fixed For Environment Highly Dusty and Dirty Housing Material Cast Iron Housing Type Square Included Bearing WJB HC211-32 Insert Bearing Lubricant Material Chevron SRI 2 NLGI #2 Equivalent Maximum Speed 3 300 RPM Grease Maximum Temperature 200 Degrees F