Linear Ball Bearing Type Closed Inside Dia 20 mm Outside Dia 32 mm Material Delrin Accelerated Speed 150 mm/sec Between Grooves (mm) 31.2 mm Dimension C 45 in Dimension C1 31.2 mm Dimension T 20 Dynamic Load Capacity (N) 4 000 N For Use With Thomson Shafting Inside Dia Tolerance + .013 Maximum Operating Temperature 185 Degrees F Minimum Operating Temperature 0 Degrees F Length (In.) 45 mm Seal -