42 mm x 75 mm x 37 mm FAG 521771D angular contact ball bearings

42 mm x 75 mm x 37 mm FAG 521771D angular contact ball bearings with easy-to-use parts NTN DRIVESHAFT ANDERlu, INC. graphics, 42 mm x 75 mm x 37 mm giving you the ability to check parts availability, Angular Contact Ball Bearings pricing, examine remanufactured options. 164111 lbf Cr - Dynamic Load Rating

What is 521771D bearing cross reference？