Track Roller Bore Diameter 50 mm Closure Double Sealed Duty Type Heavy Overall Length 33 mm Roller Diameter 50 mm Roller Head Type Flat Roller Material Alloy Steel Roller Width 32 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 15 140 N