All Categories > Ball Bearings > Angular Contact Ball Bearings Angular Contact Ball Bearings Click on a category to drill down. Standard Angular Contact Ball Bearings Super Precision Angular Contact Ball Bearings I-71200 Series Self-Aligning Ball Bearings with Extended Inner Ring (13) The I-71200 series is designed for mounting on shoulderless shafts. The inner ring is extended on one side and is drilled and tapped for set screw mounting and locking to the shaft. This series is designed to accept misalignment.