ER-type ball bearings feature an extended inner ring that provides extra shaft support because these versatile bearings are locked to the shaft with setscrews. ER bearings are available in both inch and metric sizes from 12 to 60 mm and 1/2 to 2-7/16 inches. Features include a set-screw lock for fast, secure mounting, OD mounted snap ring for axial location and a wide inner ring with a steel retainer.


For pricing and availability, please click a part number.
Part Number | Shaft Size d | Dimensions (mm) (in) | Load Ratings | Max RPM | Wt. kg | ||||||||||
mm | in | A | B | C | D | E | F | G | J | W | Dynamic C N lbf | Static Co N lbf | |||
SER201-12MM | 12 | 19.50 | 11.50 | 28.30 | 47.00 | 12.06 | 15.08 | 52.70 | 31.00 | 15.90 | 12800 | 6600 | 8800 | 0.3 | |
SER202-15MM | 15 | 19.50 | 11.50 | 28.30 | 47.00 | 12.06 | 15.08 | 52.70 | 31.00 | 15.90 | 12800 | 6600 | |||
SER203-17MM | 17 | 19.50 | 11.50 | 28.30 | 47.00 | 12.06 | 15.08 | 52.70 | 31.00 | 15.90 | 12800 | 6600 | |||
SER201-8 | 0.500 | 0.77 | 0.45 | 1.11 | 1.85 | 0.47 | 0.59 | 2.07 | 1.22 | 0.63 | 2900 | 2500 | |||
SER202-10 | 0.625 | 0.77 | 0.45 | 1.11 | 1.85 | 0.47 | 0.59 | 2.07 | 1.22 | 0.63 | 2900 | 2500 | |||
SER204-20MM | 20 | 19.50 | 11.50 | 28.30 | 47.00 | 12.06 | 15.08 | 52.70 | 31.00 | 15.90 | 12800 | 6600 | 7450 | 0.3 | |
SER204-12 | 0.750 | 0.77 | 0.45 | 1.11 | 1.85 | 0.47 | 0.59 | 2.07 | 1.22 | 0.63 | 2900 | 2500 | |||
SER205-25MM | 25 | 21.80 | 13.10 | 34.00 | 52.00 | 15.29 | 15.78 | 57.90 | 34.90 | 19.10 | 13810 | 7700 | 6250 | 0.3 | |
SER205-14 | 0.875 | 0.86 | 0.52 | 1.34 | 2.05 | 0.60 | 0.62 | 2.28 | 1.37 | 0.75 | 3140 | 1750 | |||
SER205-15 | 15/16 | 0.86 | 0.52 | 1.34 | 2.05 | 0.60 | 0.62 | 2.28 | 1.37 | 0.75 | 3140 | 1750 | |||
SER205-16 | 1.000 | 0.86 | 0.52 | 1.34 | 2.05 | 0.60 | 0.62 | 2.28 | 1.37 | 0.75 | 3140 | 1750 | |||
SER206-30MM | 30 | 22.20 | 15.90 | 40.30 | 62.00 | 17.02 | 15.93 | 67.70 | 38.10 | 22.20 | 18920 | 11000 | 5300 | 0.4 | |
SER206-18 | 1.125 | 0.87 | 0.63 | 1.59 | 2.44 | 0.67 | 0.63 | 2.67 | 1.50 | 0.87 | 4300 | 2500 | |||
SER206-19 | 1.188 | 0.87 | 0.63 | 1.59 | 2.44 | 0.67 | 0.63 | 2.67 | 1.50 | 0.87 | 4300 | 2500 | |||
SER206-20 | 1.250 | 0.87 | 0.63 | 1.59 | 2.44 | 0.67 | 0.63 | 2.67 | 1.50 | 0.87 | 4300 | 2500 | |||
SER207-35MM | 35 | 25.40 | 17.50 | 46.90 | 72.00 | 18.62 | 18.32 | 78.60 | 42.90 | 23.80 | 25430 | 15130 | 4500 | 0.5 | |
SER207-20 | 1.125 | 1.00 | 0.69 | 1.85 | 2.84 | 0.73 | 0.72 | 3.09 | 1.69 | 0.94 | 5780 | 3440 | |||
SER207-22 | 1.375 | 1.00 | 0.69 | 1.85 | 2.84 | 0.73 | 0.72 | 3.09 | 1.69 | 0.94 | 5780 | 3440 | |||
SER207-23 | 1.438 | 1.00 | 0.69 | 1.85 | 2.84 | 0.73 | 0.72 | 3.09 | 1.69 | 0.94 | 5780 | 3440 | |||
SER208-40MM | 40 | 30.20 | 19.00 | 52.40 | 80.00 | 22.62 | 21.10 | 86.60 | 49.20 | 27.80 | 32030 | 19580 | 4000 | 0.7 | |
SER208-24 | 1.500 | 1.19 | 0.75 | 2.06 | 3.15 | 0.89 | 0.83 | 3.41 | 1.94 | 1.09 | 7820 | 4450 | |||
SER209-45MM | 45 | 30.20 | 19.00 | 57.40 | 85.00 | 22.62 | 21.10 | 91.60 | 49.20 | 27.80 | 32500 | 20280 | 3700 | 0.8 | |
SER209-26 | 1.625 | 1.19 | 0.75 | 2.26 | 3.35 | 0.89 | 0.83 | 3.61 | 1.94 | 1.09 | 7390 | 4610 | |||
SER209-27 | 1.688 | 1.19 | 0.75 | 2.26 | 3.35 | 0.89 | 0.83 | 3.61 | 1.94 | 1.09 | 7390 | 4610 | |||
SER209-28 | 1.750 | 1.19 | 0.75 | 2.26 | 3.35 | 0.89 | 0.83 | 3.61 | 1.94 | 1.09 | 7390 | 4610 | |||
SER210-50MM | 50 | 32.60 | 19.00 | 61.80 | 90.00 | 22.62 | 23.84 | 96.50 | 51.60 | 28.60 | 35000 | 22830 | 3400 | 0.9 | |
SER210-30 | 1.875 | 1.28 | 0.75 | 2.43 | 3.54 | 0.89 | 0.94 | 3.80 | 2.03 | 1.13 | 7900 | 5190 | |||
SER210-31 | 1.938 | 1.28 | 0.75 | 2.43 | 3.54 | 0.89 | 0.94 | 3.80 | 2.03 | 1.13 | 7900 | 5190 | |||
SER210-32 | 2.000 | 1.28 | 0.75 | 2.43 | 3.54 | 0.89 | 0.94 | 3.80 | 2.03 | 1.13 | 7900 | 5190 | |||
SER211-55MM | 55 | 33.40 | 22.20 | 68.70 | 100.00 | 24.22 | 23.84 | 106.50 | 55.60 | 30.20 | 43030 | 28950 | 3100 | 1.2 | |
SER211-32 | 2.000 | 1.31 | 0.87 | 2.70 | 3.94 | 0.95 | 0.94 | 4.19 | 2.19 | 1.19 | 9780 | 6580 | |||
SER211-34 | 2.125 | 1.31 | 0.87 | 2.70 | 3.94 | 0.95 | 0.94 | 4.19 | 2.19 | 1.19 | 9780 | 6580 | |||
SER211-35 | 2.188 | 1.31 | 0.87 | 2.70 | 3.94 | 0.95 | 0.94 | 4.19 | 2.19 | 1.19 | 9780 | 6580 | |||
SER212-60MM | 60 | 39.70 | 25.40 | 75.70 | 110.00 | 25.82 | 29.40 | 116.60 | 65.10 | 31.80 | 52000 | 35590 | 2800 | 1.6 | |
SER212-36 | 2.250 | 1.56 | 1.00 | 2.98 | 4.34 | 1.02 | 1.16 | 4.59 | 2.56 | 1.25 | 11800 | 8090 | |||
SER212-38 | 2.375 | 1.56 | 1.00 | 2.98 | 4.34 | 1.02 | 1.16 | 4.59 | 2.56 | 1.25 | 11800 | 8090 | |||
SER212-39 | 2.438 | 1.56 | 1.00 | 2.98 | 4.34 | 1.02 | 1.16 | 4.59 | 2.56 | 1.25 | 11800 | 8090 |