ntn main spindle bearings 2 standard cage design table 9.1 standard cages of angular contact ball bearings for radial loads bearing series 78c 79u 15° 25° 30° 79c 70u 15° 25° 30° 70c 72c hse9 15° 20° 25° hse0 15° 20° 25° hsf hsl9 15° 20° 25° hsl0 15° 20° 25° hsfl0 79 llb 15° 25° 70 llb 15° 25° bns9 15° 20° 25° bns0 15° 20° 25° bnt9 bnt0 bnt2 7900 llb 7000 llb 7909 llb 7009 llb bns910 bns010 bnt900 bnt000 bnt200 bns920 bns020 bnt909 bnt009 bnt209 7900u 7000u 7200c 7926u 7026u 7220c 7221c hse910 hse010 hsf010 hsl910 hsl010 hsfl010 7228c hse934 hse034 hsf020 hsl934 hsl034 hsfl020 molded nylon cage machined phenol resin cage 7805c 7824c machined high tensile brass cage 7826c 7928c 7028c 7834c 7934c 7040c 7226c note cage design is subject to change without notice for detailed information contact ntn engineering 3 bearing designations 78 79 70 72 bnt type 5s 7 0 20 u ad t1 db /gl p4 precision class p5 jis class 5 p4 jis class 4 p2 jis class 2 internal clearance code gl light preload gn nor
|
ntn main spindle bearings !4 high-speed angular contact ball bearings hse type the hse type employs a special material featuring greatly improved wear resistance and anti-seizure properties as well as a special surface modification technique furthermore thanks to an optimized internal design this type achieves high speed high rigidity and high reliability preload and low temperature rise the 5s-hse type features high speed and limited temperature increase even if its preload is increased after assembly into the spindle it maintains stable performance at high speeds fig 9.24 test condition test bearing shaft speed lubrication oil consumption air consumption outer casing cooling 20 18 16 14 12 10 8 6 4 2 0 features 1 adoption of special materials and a unique internal design improve anti-seizure properties 15 times better than the conventional type and wear resistance 6 times better than of the conventional type 2 optimized internal design enables high-speed operation and high rigidity
|
main spindle bearings r1as ras dynamic equivalent radial load pr xfr yfa single row tandem back-to-back face-to-face fa fr e fa fr e fa fr e fa fr exyxyxyxy ras da db ras da da e 0.8 1 0 0.39 0.76 1 0.78 0.63 1.24 static equivalent radial load por single row tandem xo yo xo fr yo fa back-to-back face-to-face xo yo 0.5 0.33 1 0.66 when por fr with single-row or tandem f r arrangement por back-to-back db load center mm a 7.7 8.2 9.8 10.3 12.8 14.2 15.7 18.1 20.8 22.4 23.7 26.1 27.5 29.0 32.6 34.1 35.7 38.7 40.2 41.6 44.8 46.2 47.7 52.3 56.9 internal mass free space cm3 kg single-row single-row approx approx face-to-face df reference dimensions abutment and fillet dimensions mm db max part number r1as max da d1 14.3 16.3 19.3 21.3 25.9 30.9 35.9 41.6 47.6 52.7 57.2 63.7 68.7 73.7 80.3 85.3 90.8 96.9 101.9 106.9 113.6 118.6 123.6 135.2 146.9 d2 13.5 15.5 18.3 20.3 24.7 29.7 34.7 39.9 45.9 50.8 55.3 61.8 66.8 71.8 78.0 83.0 88.5 94.3 99.3 104.3 110.5 115.5 120.5 131.7 143.0 d1 17.7 19
|
main spindle bearings dynamic equivalent radial load pr xfr yfa i fo fa r1as ras cor 0.178 0.357 0.714 1.07 1.43 2.14 3.57 5.35 7.14 e 0.38 0.4 0.43 0.46 0.47 0.5 0.55 0.56 0.56 ras da db ras da da single row tandem back-to-back face-to-face fa fr e fa fr e fa fr e fa fr exyxyxyxy 1.47 1.65 2.39 1.4 1.57 2.28 1.3 1.46 2.11 1.23 1.38 2 1.19 1 1.34 0.72 1.93 1 0 0.44 1.12 1.26 1.82 1.02 1.14 1.66 1 1.12 1.63 1 1.12 1.63 static equivalent radial load por xo fr yo fa single row tandem back-to-back face-to-face xo yo xo yo 0.5 0.46 1 0.92 when por fr with single-row or tandem fr arrangement por back-to-back db load center mm a 6.4 6.8 7.7 8.5 10.3 10.9 12.3 13.5 14.8 16.1 16.8 18.8 19.4 20.1 22.1 22.8 24.8 25.5 27.5 28.2 28.8 30.8 32.9 34.2 38.7 internal mass free space cm3 kg single-row single-row approx approx face-to-face df reference dimensions abutment and fillet dimensions mm db max part number r1as max da d1 15.2 17.9 20.9 23.0 28.1 32.6 39.2 44.2 49.7 55.3 60.3 66.9 71.9 76.9
|
main spindle bearings high-speed angular contact ball bearings steel ball type 2la-hse0 series contact angle 25° d 50 170mm b r r1 r1 r d d1 d2 d d1 d2 a part number boundary dimensions mm d d 80 90 95 100 110 115 125 130 140 145 150 160 170 180 200 210 225 240 260 b 16 18 18 18 20 20 22 22 24 24 24 26 28 28 33 33 35 38 42 rs min1 r1s min1 1 1.1 1.1 1.1 1.1 1.1 1.1 1.1 1.5 1.5 1.5 2 2 2 2 2 2.1 2.1 2.1 0.6 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 basic load ratings dynamic static dynamic static kn kgf cr 15.0 16.3 17.1 17.3 21.2 22.5 25.8 26.1 30.5 30.5 31.5 36.5 45.0 45.5 65.0 67.5 69.5 81.0 93.0 cor 10.8 12.9 14.2 14.9 18.8 21.2 24.3 25.4 29.7 31.0 33.0 38.5 46.5 48.5 67.5 73.0 78.5 91.5 105 cr 1 530 1 660 1 740 1 770 2 160 2 300 2 630 2 660 3 100 3 150 3 250 3 700 4 600 4 650 6 650 6 900 7 050 8 300 9 500 cor 1 100 1 310 1 450 1 520 1 920 2 160 2 480 2 590 3 050 3 150 3 400 3 900 4 750 4 950 6 850 7 400 8 000 9 350 10 700 static axial load capacity kn kgf limiting spe
|
main spindle bearings eco-friendly angular contact ball bearings steel ball type 2la-hsl9 series contact angle 15° d 50 130mm b r r1 r1 r d d1 d2 d a part number boundary dimensions mm d d 72 80 85 90 100 105 110 120 125 130 140 145 150 165 180 b 12 13 13 13 16 16 16 18 18 18 20 20 20 22 24 rs min1 r1s min1 0.6 1 1 1 1 1 1 1.1 1.1 1.1 1.1 1.1 1.1 1.1 1.5 0.3 0.6 0.6 0.6 0.6 0.6 0.6 0.6 0.6 0.6 0.6 0.6 0.6 0.6 1 basic load ratings dynamic static dynamic static kn kgf cr 8.10 10.3 10.6 10.9 13.7 14.1 14.5 17.4 17.9 18.3 25.7 26.5 26.7 31.0 37.0 cor 7.30 9.20 9.95 10.7 13.5 14.4 15.4 18.3 19.5 20.6 28.0 29.7 30.5 36.5 45.0 cr 825 1 050 1 080 1 110 1 400 1 440 1 480 1 770 1 820 1 870 2 620 2 700 2 720 3 200 3 800 cor 745 940 1 010 1 090 1 370 1 470 1 570 1 860 1 980 2 110 2 850 3 050 3 150 3 750 4 600 static axial load capacity kn kgf factor fo 10.7 13.5 14.6 15.7 19.8 21.2 22.7 26.9 28.7 30.5 41.0 44.0 45.0 54.0 66.5 1 090 1 380 1 490 1 600 2 020 2 170 2 310 2 740 2 920 3 100 4 200 4 450
|
main spindle bearings l r1as ras dynamic equivalent radial load pr e 0.57 single row tandem fa fr e fa fr exyxy xfr yfa back-to-back face-to-face fa fr e fa fr exyxy 1 0 0.43 1 1 1.09 0.7 1.63 da db static equivalent radial load por single row tandem xo yo xo fr yo fa back-to-back face-to-face xo yo 0.5 0.42 1 0.84 when por fr with single-row or tandem f r arrangement por load center mm a 17.2 18.9 19.8 20.7 23.6 24.5 25.4 27.8 28.7 29.6 32.0 32.9 33.8 37.1 40.4 mass kg single-row approx reference dimensions abutment and fillet dimensions mm da db max part number r1as max d1 58.0 64.1 69.1 74.1 81.1 86.1 91.1 98.1 103.1 108.1 114.8 119.8 124.8 136.8 148.8 d2 66.0 73.3 78.3 83.3 91.6 96.6 101.6 110.0 115.0 119.9 129.1 134.1 139.1 152.4 165.7 min l2 min 0.12 0.17 0.18 0.19 0.32 0.34 0.36 0.52 0.55 0.57 0.76 0.79 0.82 1.13 1.51 54.5 60.5 65.5 70.5 75.5 80.5 85.5 92 97 102 107 112 117 127 138.5 69.5 75.5 80.5 85.5 95.5 100.5 105.5 115.5 120.5 125.5 135.5 140.5 145.5 160.5 174.5 0.3 0.
|
main spindle bearings dynamic equivalent radial load pr xfr yfa i fo fa r1as ras ras ras cor 0.178 0.357 0.714 1.07 1.43 2.14 3.57 5.35 7.14 e 0.38 0.4 0.43 0.46 0.47 0.5 0.55 0.56 0.56 da db da da single row tandem back-to-back face-to-face fa fr e fa fr e fa fr e fa fr exyxyxyxy 1.47 1.65 2.39 1.4 1.57 2.28 1.3 1.46 2.11 1.23 1.38 2 1.19 1 1.34 0.72 1.93 1 0 0.44 1.12 1.26 1.82 1.02 1.14 1.66 1 1.12 1.63 1 1.12 1.63 static equivalent radial load por xo fr yo fa single row tandem back-to-back face-to-face xo yo xo yo 0.5 0.46 1 0.92 when por fr with single-row or tandem fr arrangement por back-to-back db load center mm a 6.4 6.7 7.7 8.5 10.2 10.9 12.2 13.6 14.8 16.1 16.8 mass kg single-row approx face-to-face df reference dimensions da d1 14.5 16.5 19.5 21.6 26.0 30.7 36.7 42.2 48.2 53.3 58.3 d1 23.4 25.4 28.8 32.2 38.0 43.1 50.4 57.2 62.7 70.3 75.3 min abutment and fillet dimensions mm db max part number r1as max da max ras max 0.3 0.3 0.3 0.3 0.6 0.6 1 1 1 1 1 0.018 0.022 0.03
|
main spindle bearings sealed high-speed angular contact ball bearings steel ball type 2la-bns9 llb series contact angle 25° d 50 100mm b r r1 rrdd1 d d1 d 2 a part number boundary dimensions mm d d 72 80 85 90 100 105 110 120 125 130 140 b 12 13 13 13 16 16 16 18 18 18 20 rs min1 r1s min1 0.6 1 1 1 1 1 1 1.1 1.1 1.1 1.1 0.3 0.6 0.6 0.6 0.6 0.6 0.6 0.6 0.6 0.6 0.6 basic load ratings dynamic static dynamic static kn kgf cr 7.60 9.75 10.0 10.3 12.9 13.3 13.6 16.4 16.8 17.2 24.2 cor 6.90 8.70 9.40 10.1 12.7 13.6 14.5 17.2 18.4 19.5 26.4 cr 775 990 1 020 1 050 1 320 1 350 1 390 1 670 1 710 1 760 2 470 cor 700 885 960 1 030 1 300 1 390 1 480 1 760 1 870 1 990 2 690 static axial load capacity kn kgf limiting speed min-1 grease lubrication 20 500 18 500 17 200 16 100 14 700 13 900 13 200 12 200 11 600 11 100 10 400 2la-bns910adllb 2la-bns911adllb 2la-bns912adllb 2la-bns913adllb 2la-bns914adllb 2la-bns915adllb 2la-bns916adllb 2la-bns917adllb 2la-bns918adllb 2la-bns919adllb 2la-bns920adllb 50 55
|
main spindle bearings sealed high-speed angular contact ball bearings ceramic ball type 5s-2la-bns0 llb series contact angle 20° d 45 100mm b r r1 rrdd1 d d1 d 2 a part number boundary dimensions mm d d 75 80 90 95 100 110 115 125 130 140 145 150 b 16 16 18 18 18 20 20 22 22 24 24 24 rs min1 r1s min1 1 1 1.1 1.1 1.1 1.1 1.1 1.1 1.1 1.5 1.5 1.5 0.6 0.6 0.6 0.6 0.6 0.6 0.6 0.6 0.6 1 1 1 basic load ratings dynamic static dynamic static kn kgf cr 11.5 14.4 16.8 17.6 17.9 21.9 23.3 26.7 27.0 31.5 31.5 33.0 cor 6.2 7.8 9.2 10.2 10.7 13.5 15.2 17.4 18.1 21.3 22.1 23.8 cr 1 180 1 470 1 720 1 800 1 830 2 230 2 380 2 720 2 760 3 200 3 250 3 350 cor 630 795 935 1 040 1 090 1 370 1 550 1 770 1 850 2 170 2 260 2 420 static axial load capacity kn kgf limiting speed min-1 grease lubrication 28 700 26 500 23 700 22 200 20 800 19 100 18 100 16 800 16 000 15 000 14 300 13 800 5s-2la-bns009llb 5s-2la-bns010llb 5s-2la-bns011llb 5s-2la-bns012llb 5s-2la-bns013llb 5s-2la-bns014llb 5s-2la-bns015llb 5s-2la-bns
|
main spindle bearings dynamic equivalent radial load pr xfr yfa i fo fa ras ras da da ras r1as db da cor 0.178 0.357 0.714 1.07 1.43 2.14 3.57 5.35 7.14 e 0.35 0.36 0.38 0.4 0.41 0.43 0.44 0.47 0.49 single row tandem back-to-back face-to-face fa fr e fa fr e fa fr e fa fr exyxyxyxy 1.57 1.76 2.56 1.53 1.71 2.48 1.46 1.64 2.38 1.42 1.59 2.31 1.38 1 1.55 0.72 2.25 1 0 0.44 1.33 1.49 2.16 1.25 1.4 2.03 1.18 1.32 1.92 1.13 1.26 1.83 static equivalent radial load por xo fr yo fa single row tandem back-to-back face-to-face xo yo xo yo 0.52 0.54 1.04 1.08 fr with single-row or tandem when por fr arrangement por back-to-back db load center mm a 7.2 8.0 8.9 9.9 11.7 12.8 14.3 15.8 17.2 18.3 19.5 21.0 22.8 24.1 25.2 26.6 27.9 internal mass free space cm3 kg single-row single-row approx approx face-to-face df reference dimensions abutment and fillet dimensions mm da max part number r1as max da d1 17.0 18.4 20.8 24.2 29.4 33.8 40.6 46.8 53.0 57.3 62.2 69.0 77.0 82.5 87.0 93.0 98.1 d2 15.0 1
|
