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Bearing No. shaft Dia. Eccentric collar Basic load ratings (N) Mass(kg)
d D B C S B1 B3 h d1 Dynamic Cr Static Cor
(in.) (mm)
 NA305-14 7/8 -- 62 34.9 21 16.7 46.8 15.9 6.2 42.8 A305-14 22360 11500 0.46
 NA305-15 15/16 -- 62 34.9 21 16.7 46.8 15.9 6.2 42.8 A305-15 22360 11500 0.44
 NA305 -- 25 62 34.9 21 16.7 46.8 15.9 6.2 42.8 A305 22360 11500 0.43
 NA305-16 1 -- 62 34.9 21 16.7 46.8 15.9 6.2 42.8 A305-16 22360 11500 0.43
 NA306-18 1-1/8 -- 72 36.5 24 17.5 50 17.5 6.5 50 A306-18 27000 15200 0.71
 NA306 -- 30 72 36.5 24 17.5 50 17.5 6.5 50 A306 27000 15200 0.68
 NA306-19 1-3/16 -- 72 36.5 24 17.5 50 17.5 6.5 50 A306-19 27000 15200 0.68
 NA307-20 1-1/4 -- 80 38.1 25 18.3 51.6 17.5 7.2 55 A307-20 33500 19200 0.86
 NA307-21 1-5/16 -- 80 38.1 25 18.3 51.6 17.5 7.2 55 A307-21 33500 19200 0.83
 NA307-22 1-3/8 -- 80 38.1 25 18.3 51.6 17.5 7.2 55 A307-22 33500 19200 0.80
 NA307 -- 35 80 38.1 25 18.3 51.6 17.5 7.2 55 A307 33500 19200 0.80
 NA307-23 1-7/16 -- 80 38.1 25 18.3 51.6 17.5 7.2 55 A307-23 33500 19200 0.78
 NA308-24 1-1/2 -- 90 41.3 28 19.8 57.1 20.6 8.5 63.5 A308-24 40560 24000 1.13
 NA308-25 1-9/16 -- 90 41.3 28 19.8 57.1 20.6 8.5 63.5 A308-25 40560 24000 1.13
 NA308 -- 40 90 41.3 28 19.8 57.1 20.6 8.5 63.5 A308 40560 24000 1.08
 NA309-26 1-5/8 -- 100 42.9 30 19.8 58.7 20.6 9 70 A309-26 53000 31800 1.57
 NA309-27 1-11/16 -- 100 42.9 30 19.8 58.7 20.6 9 70 A309-27 53000 31800 1.52
 NA309-28 1-3/4 -- 100 42.9 30 19.8 58.7 20.6 9 70 A309-28 53000 31800 1.47
 NA309 -- 45 100 42.9 30 19.8 58.7 20.6 9 70 A309 53000 31800 1.45
 NA310-30 1-7/8 -- 110 49.2 32 24.6 66.6 22.2 9.9 76.2 A310-30 61750 37800 1.93
 NA310-31 1-15/16 -- 110 49.2 32 24.6 66.6 22.2 9.9 76.2 A310-31 61750 37800 1.88
 NA310 -- 50 110 49.2 32 24.6 66.6 22.2 9.9 76.2 A310 61750 37800 1.86
 NA311-32 2 -- 120 55.6 34 27.8 73 22.2 10.6 83 A311-32 71500 44800 2.49
 NA311-34 2-1/8 -- 120 55.6 34 27.8 73 22.2 10.6 83 A311-34 71500 44800 2.36
 NA311 -- 55 120 55.6 34 27.8 73 22.2 10.6 83 A311 71500 44800 2.30
 NA311-35 2-3/16 -- 120 55.6 34 27.8 73 22.2 10.6 83 A311-35 71500 44800 2.24
 NA312-36 2-1/4 -- 130 61.9 36 30.95 79.4 23.9 11.3 89 A312-36 81600 51800 2.95
 NA312 -- 60 130 61.9 36 30.95 79.4 23.9 11.3 89 A312 81600 51800 2.89
 NA312-38 2-3/8 -- 130 61.9 36 30.95 79.4 23.9 11.3 89 A312-38 81600 51800 2.89
 NA312-39 2-7/16 -- 130 61.9 36 30.95 79.4 23.9 11.3 89 A312-39 81600 51800 2.86
 NA313-40 2-1/2 -- 140 65.1 38 32.5 85.7 27 12.1 97 A313-40 93860 60500 3.85
 NA313 -- 65 140 65.1 38 32.5 85.7 27 12.1 97 A313 93860 60500 3.66
 NA314-44 2-3/4 -- 150 68.3 40 34.15 92.1 30.2 12.8 102 A314-44 104260 68000 4.40
 NA314 -- 70 150 68.3 40 34.15 92.1 30.2 12.8 102 A314 104260 68000 4.50
 NA315 -- 75 160 74.6 42 37.3 100 31.8 13.5 113 A315 113360 76800 5.34