Track Roller Bore Diameter 3/4 in Closure Double Sealed Duty Type Heavy Overall Length 1 35/64 in Roller Diameter 3 1/2 in Roller Head Type V-Groove Roller Material Alloy Steel Roller Width 1 1/2 in Rolling Element Rows 2 Seal Type Contact System of Measurement Inch Bearing Material Alloy Steel Bearing Material Grade 52100 Bearing Type Radial Ball Dynamic Radial Load Capacity 5 590 lbf Flange Diameter Not Applicable Flange Thickness Not Applicable Load Direction Radial Thrust