Linear Ball Bearing, Type Closed, Inside Dia. 1 1/2 in, Outside Dia. 2 3/8 in, Material Delrin, Accelerated Speed 450 fps, Between Grooves (mm) 2.442 in, Dimension C 3 in, Dimension C1 2.442 in, Dimension T 1.5, Dynamic Load Capacity (N) 3,880 lbf, For Use With Thomson Shafting, Inside Dia. Tolerance +/-0.001, Maximum Operating Temperature 185 Degrees F, Length (In.) 3 in, Seal -