Insert Bearing, Ball Material Alloy Steel, Bearing Industry Number ER-28, Bearing Insert Type Radial/Deep Groove Ball, Bearing Insert Shape Cylindrical, Bore Diameter 1 3/4 in, Cage Material Brass, Closure Double Sealed, For Environment Highly Dusty and Dirty, Inner Ring Outside Diameter 2.297 in, Lubricant Material NLGI #2 Equivalent, Maximum Temperature 220 Degrees F, Minimum Temperature -20 Degrees F, Outer Ring Width 1.094 in, Outside Diameter 3 11/32 in, Ring Material Alloy Steel