Linear Ball Bearing Type Open Inside Dia 3/4 in Outside Dia 1 1/4 in Material Delrin Accelerated Speed 450 fps Between Grooves (mm) 1.27 in Dimension C 1.625 in Dimension C1 1.27 in Dimension F 0.14 in Dimension G 0.130 in Dimension T 0.75 Dynamic Load Capacity (N) 470 lbf For Use With Thomson Shafting Inside Dia Tolerance +/-0.001 Maximum Operating Temperature 185 Degrees F Minimum Operating Temperature 0 Degrees F Length (In.) 1 5/8 in Retention Hole Dia (mm) 0.14 in