Linear Ball Bearing Type Open Inside Dia 1/2 in Outside Dia 7/8 in Material Steel Accelerated Speed 450 fps Between Grooves (mm) 0.967 in Dimension B - Dimension C 1.25 in Dimension C1 0.967 in Dimension C2 0.046 Dimension d - Dimension E 0.31 in Dimension F - Dimension G - Dimension T 0.5 Dynamic Load Capacity (N) 60 lbf For Use With Thomson Shafting Inside Dia Tolerance +/-.001 Maximum Operating Temperature 500 Degrees F Minimum Operating Temperature 0 Degrees F