Linear Ball Bearing Type Closed Inside Dia 1 1/4 in Outside Dia 2 in Material Steel Accelerated Speed - Between Grooves (mm) 2.009 in Dimension B - Dimension C - Dimension C1 - Dimension C2 - Dimension d - Dimension D1 - Dimension D (In.) - Dimension E - Dimension F - Dimension G - Dimension L - Dimension T - Dimension W - Dynamic Load Capacity (N) 520 lbf For Use With Thomson Shafting Inside Dia Tolerance -0.0006 Maximum Operating Temperature 500 Degrees F