Track Roller Bore Diameter 40 mm Closure Double Sealed Duty Type Heavy Overall Length 23 mm Roller Diameter 40 mm Roller Head Type Flat Roller Material Alloy Steel Roller Width 22 mm Rolling Element Rows 2 Seal Type Contact System of Measurement Metric Bearing Material Alloy Steel Bearing Material Grade 52100 Bearing Type Radial Ball Dynamic Radial Load Capacity 8 200 N