Linear Ball Bearing Type Closed Inside Dia 1/4 in Outside Dia 1/2 in Material Stainless Steel/Polymer Cage Accelerated Speed - Between Grooves (mm) 0.515 in Dimension B 0.515/0.499 in Dimension C - Dimension C1 - Dimension C2 - Dimension d - Dimension D1 0.469 in Dimension D (In.) - Dimension E - Dimension F - Dimension G - Dimension L 0.75 in Dimension T - Dimension W 0.039 in Dynamic Load Capacity (N) 46 lbf For Use With Linear Motion Shafts