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Home ball bearing units & ball bearing inserts Technical Data Type of RHB Bearing Units Bearing Units Ball Bearing Inserts     UC200 (Normal duty) Bearing No. d D Bi Be n m G ds (mm) (in.) UCW201 12 　 40 27.4 14 11.5 15.9 4 M5x0.8 UCW202 15 　 40 27.4 14 11.5 15.9 4 M5x0.8 UCW203 17 　 40 27.4 14 11.5 15.9 4 M5x0.8 UC201 12 　 47 31 17 12.7 18.3 5 M6x1.0 UC201-8 12.7  1/2 47 31 17 12.7 18.3 5 1/4-28UNF UC202 15 　 47 31 17 12.7 18.3 5 M6x1.0 UC202-10 15.875  5/8 47 31 17 12.7 18.3 5 1/4-28UNF UC203 17 　 47 31 17 12.7 18.3 5 M6x1.0 UC203-11 17.463  11/16 47 31 17 12.7 18.3 5 1/4-28UNF UC204-12 19.05  3/4 47 31 17 12.7 18.3 5 1/4-28UNF UC204 20 　 47 31 17 12.7 18.3 5 M6x1.0 UC205-14 22.225  7/8 52 34 17 14.3 19.7 5.5 1/4-28UNF UC205-15 23.813 15/16 52 34 17 14.3 19.7 5.5 1/4-28UNF UC205 25 　 52 34 17 14.3 19.7 5.5 M6x1.0 UC205-16 25.4 1 52 34 17 14.3 19.7 5.5 1/4-28UNF UC206-18 28.575 1 1/8 62 38.1 19 15.9 22.2 5.5 1/4-28UNF UC206 30 　 62 38.1 19 15.9 22.2 5.5 M6x1.0 UC206-19 30.163 1  3/16 62 38.1 19 15.9 22.2 5.5 1/4-28UNF UC206-20 31.75 1 1/4 62 38.1 19 15.9 22.2 5.5 1/4-28UNF UC207-20 31.75 1 1/4 72 42.9 20 17.5 25.4 6.5 5/16-24UNF