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Linear Ball Bearing, Type Closed, Inside Dia. 8 mm, Outside Dia. 16 mm, Material Steel/Delrin, Accelerated Speed 150 mm/sec, Between Grooves (mm) 16.2 mm, Dimension C1 16.2 mm, Dimension C2 1.1, Dimension d 8, Dynamic Load Capacity (N) 180 N, For Use With Thomson Shafting, Inside Dia. Tolerance + .009, Maximum Operating Temperature 185 Degrees F, Minimum Operating Temperature 0 Degrees F, Length (In.) 25 mm, Seal -