Insert Bearing Ball Material Alloy Steel Bearing Industry Number ER-12 Bearing Insert Type Radial/Deep Groove Ball Bearing Insert Shape Cylindrical Bore Diameter 3/4 in Cage Material Brass Closure Double Sealed For Environment Highly Dusty and Dirty Inner Ring Outside Diameter 1.188 in Lubricant Material NLGI #2 Equivalent Maximum Temperature 220 Degrees F Minimum Temperature -20 Degrees F Outer Ring Width 0.625 in Outside Diameter 1 27/32 in Ring Material Alloy Steel