Ball and Roller Bearings - Ntn-snr.com

High Speed Single and Duplex Arrangements
r
B
r
B
ra
r
r
ra
D
d
Da
da
a
a
a
a
d 4075mm
Single
Back-to-back
arrangement
(DB)
Face-to-face
arrangement
(DF)
Tandem
arrangement
(DT)
Boundary dimensions Basic load ratings Limiting speeds 1 Bearing Load Mass
dynamic static dynamic static numbers center
kg
mm kN kgf rpm mm
single
2 2
d D B B r s min rls min C r C or C r C or grease oil a approx.
40
45
50
55
60
65
70
75
90 23 46 1.5 1 49.5 32.5 5,050 3,300 13,000 17,000 7308C 20 0.606
58 7 14 0.3 0.15 7.60 7.40 775 755 16,000 21,000 7809C 10.5 0.038
68 12 24 0.6 0.3 17.3 14.1 1,760 1,430 15,000 20,000 7909C 13.5 0.126
75 16 32 1 0.6 24.4 19.3 2,490 1,960 14,000 19,000 7009C 16 0.233
85 19 38 1.1 0.6 41.0 28.8 4,150 2,940 13,000 17,000 7209C 18 0.4
100 25 50 1.5 1 64.0 43.0 6,550 4,400 11,000 15,000 7309C 22.5 0.83
65 7 14 0.3 0.15 7.90 8.05 805 820 14,000 19,000 7810C 11 0.049
72 12 24 0.6 0.3 18.3 15.8 1,870 1,620 14,000 18,000 7910C 14 0.131
80 16 32 1 0.6 26.0 21.9 2,650 2,230 13,000 17,000 7010C 16.5 0.253
90 20 40 1.1 0.6 43.0 31.5 4,350 3,250 12,000 15,000 7210C 19.5 0.454
110 27 54 2 1 75.0 51.5 7,650 5,250 10,000 14,000 7310C 24.5 1.05
72 9 18 0.3 0.15 13.1 12.7 1,330 1,300 13,000 18,000 7811C 13 0.079
80 13 26 1.0 0.6 19.1 17.7 1,950 1,810 12,000 16,000 7911C 15.5 0.178
90 18 36 1.1 0.6 34.0 28.6 3,500 2,920 12,000 15,000 7011C 18.5 0.37
100 21 42 1.5 1 53.0 40.0 5,400 4,100 11,000 14,000 7211C 21 0.593
120 29 58 2.0 1 87.0 60.5 8,850 6,200 9,400 13,000 7311C 26.5 1.34
78 10 20 0.3 0.15 13.4 13.6 1,370 1,390 12,000 16,000 7812C 14 0.101
85 13 26 1 0.6 20.0 19.5 2,040 1,990 11,000 15,000 7912C 16 0.191
95 18 36 1.1 0.6 35.0 30.5 3,550 3,150 11,000 14,000 7012C 19.5 0.387
110 22 44 1.5 1 64.0 49.5 6,550 5,050 9,700 13,000 7212C 22.5 0.757
130 31 62 2.1 1.1 99.0 70.5 10,100 7,150 8,700 12,000 7312C 28.5 1.68
85 10 20 0.6 0.3 14.1 14.9 1,440 1,520 11,000 15,000 7813C 15 0.122
90 13 26 1 0.6 20.2 20.4 2,060 2,080 11,000 14,000 7913C 17 0.204
100 18 36 1.1 0.6 37.0 34.5 3,800 3,500 9,900 13,000 7013C 20 0.421
120 23 46 1.5 1 70.0 55.0 7,100 5,600 9,000 12,000 7213C 24 0.948
140 33 66 2.1 1.1 112 80.5 11,400 8,200 8,100 11,000 7313C 30 2.06
90 10 20 0.6 0.3 14.5 15.8 1,470 1,610 10,000 14,000 7814C 15.5 0.13
100 16 32 1 0.6 28.9 29.0 2,950 2,960 9,900 13,000 7914C 19.5 0.331
110 20 40 1.1 0.6 47.0 43.0 4,800 4,400 9,200 12,000 7014C 22 0.583
125 24 48 1.5 1 76.0 60.0 7,750 6,150 8,300 11,000 7214C 25 1.04
150 35 70 2.1 1.1 126 92.0 12,900 9,350 7,500 10,000 7314C 32 2.5
95 10 20 0.6 0.3 14.8 16.7 1,510 1,700 9,700 13,000 7815C 16.5 0.138
105 16 32 1 0.6 29.4 30.5 3,000 3,100 9,200 12,000 7915C 20 0.35
1 This value was achieved with laminated phenol resin machined cages; in the case of molded resin cages,with oil lubricant, the value will be 75% of this.
2 Minimal allowable dimension for chamfer dimension r or r1.
B-58