Page 102 of Precision Rolling Bearings by NTN Corporation Japan

main spindle bearings standard angular contact ball bearings steel ball type 72 series contact angle 15° d 10 130mm brrdd1 r1 r d d1 d2 a part number boundary dimensions mm d d 30 32 35 40 47 52 62 72 80 85 90 100 110 120 125 130 140 150 160 170 180 190 200 215 230 b 9 10 11 12 14 15 16 17 18 19 20 21 22 23 24 25 26 28 30 32 34 36 38 40 40 rs min1 r1s min1 0.6 0.6 0.6 0.6 1 1 1 1.1 1.1 1.1 1.1 1.5 1.5 1.5 1.5 1.5 2 2 2 2.1 2.1 2.1 2.1 2.1 3 0.3 0.3 0.3 0.3 0.6 0.6 0.6 0.6 0.6 0.6 0.6 1 1 1 1 1 1 1 1 1.1 1.1 1.1 1.1 1.1 1.1 basic load ratings dynamic static dynamic static kn kgf cr 5.40 7.10 9.00 11.2 14.6 16.6 23.0 30.5 36.5 41.0 43.0 53.0 64.0 70.0 76.0 79.5 93.0 104 123 139 149 162 176 199 213 cor 2.64 3.45 4.50 5.75 8.15 10.2 14.7 19.9 25.2 28.8 31.5 40.0 49.5 55.0 60.0 65.5 77.5 90.5 105 120 127 143 160 192 214 cr 555 720 915 1 140 1 490 1 690 2 350 3 100 3 700 4 150 4 350 5 400 6 550 7 100 7 750 8 100 9 450 10 600 12 500 14 200 15 200 16 600 17 900 20 200 21 700 cor 269 355 460 590 835 1 050 1 500 2 030 2 570 2 940 3 250 4 100 5 050 5 600 6 150 6 700 7 900 9 200 10 700 12 200 12 900 14 600 16 300 19 600 21 800 static axial load capacity kn kgf factor limiting speed min-1 grease oil lubrication lubrication 42 900 40 000 35 200 30 500 25 500 22 600 18 900 16 400 14 700 13 500 12 600 11 400 10 200 9 500 9 000 8 500 8 000 7 500 7 000 6 600 6 300 6 000 5 700 5 300 4 900 55 600 51 800 45 600 39 600 33 000 29 200 24 500 21 300 19 000 17 500 16 300 14 700 13 200 12 300 11 700 11 000 10 400 9 700 9 100 8 600 8 100 7 700 7 400 6 800 6 300 fo 1.01 1.59 1.89 2.67 3.70 3.75 7.10 10.6 14.4 14.8 15.3 21.6 26.1 28.5 31.0 33.5 34.5 46.5 53.5 62.0 67.0 74.5 86.0 91.5 111 103 162 193 272 375 385 725 1 090 1 470 1 510 1 560 2 200 2 660 2 910 3 150 3 400 3 550 4 750 5 450 6 350 6 800 7 600 8 800 9 300 11 300 13.4 12.9 12.9 13.0 13.4 14.0 14.0 13.9 14.2 14.2 14.5 14.5 14.5 14.6 14.6 14.8 14.7 14.9 14.6 14.6 14.5 14.5 14.5 14.6 14.7 7200c 7201c 7202c 7203c 7204c 7205c 7206c 7207c 7208c 7209c 7210c 7211c 7212c 7213c 7214c 7215c 7216c 7217c 7218c 7219c 7220c 7221ct1b 7222ct1b 7224ct1b 7226ct1b 10 12 15 17 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95 100 105 110 120 130 1 minimum allowable value for corner radius dimension r or r1 96

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