Insert Bearing Ball Material Alloy Steel Bearing Industry Number UC204-20MM Bearing Insert Type Radial/Deep Groove Ball Bearing Insert Shape Spherical Bore Diameter 20 mm Closure Double Sealed For Environment Chemical Food and Beverage Maximum Temperature 250 Degrees F Minimum Temperature -40 Degrees F Outer Ring Width 17 mm Outside Diameter 47 mm Ring Material Alloy Steel Rolling Element Material Alloy Steel Rolling Element Rows 1 Seal Type Contact Shaft Locking Type Set Screws