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    Bearings for Swiveling Spindle Heads in Machine Tools

    NSK provides angular contact ball bearings specially designed for machine tool swivel heads. These bearings match the high-precision processing needed in multi-spindle configurations. In particular, our ROBUSTSLIM high-accuracy low-profile angular contact ball bearings offer high rigidity with low torque.

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    Product Description

    Features

    High running accuracy and low torque rotation made posible with ball bearings

    High moment stiffness on par with crossed roller bearings

    Specialized design more compact than standard bearings

    Designation BoundaryDimensions BasicLoadRatings Effective Mass LimitingSpeeds
    (mm) (kN) LoadCenter (kg) (min－1)
    d D T B C Cone Cup Cr C0r (mm) （approx.） Grease Oil
    r(min.) (Dynamic) (Static) a
    HR32020XJ 100 150 32 32 24 2 1.5 176 294 32.5 1.95 2200 3000
    HR32920J 100 140 25 25 20 1.5 1.5 117 205 24.2 1.18 2200 3200
    HR32021XJ 105 160 35 35 26 2.5 2 204 340 34.3 2.48 2000 2800
    HR32921J 105 145 25 25 20 1.5 1.5 119 212 25.3 1.23 2200 3000
    HR32022XJ 110 170 38 38 29 2.5 2 236 390 35.9 3.09 2000 2600
    HR32922J 110 150 25 25 20 1.5 1.5 123 224 26.5 1.29 2200 2800
    HR32024XJ 120 180 38 38 29 2.5 2 242 405 39.7 3.27 1800 2400
    HR32924J 120 165 29 29 23 1.5 1.5 161 291 29.2 1.8 1900 2600
    HR32026XJ 130 200 45 45 34 2.5 2 320 535 43.9 5.06 1600 2200
    HR32028XJ 140 210 45 45 34 2.5 2 325 555 46.6 5.32 1600 2200
    HR32928J 140 190 32 32 25 2 1.5 206 390 33.6 2.64 1700 2200
    HR32030XJ 150 225 48 48 36 3 2.5 375 650 49.8 6.6 1400 2000
    HR32032XJ 160 240 51 51 38 3 2.5 425 750 53 7.93 1300 1800
    HR32932J 160 220 38 38 30 2.5 2 296 570 38.7 4.32 1400 1900
    HR32034XJ 170 260 57 57 43 3 2.5 505 890 56.6 10.6 1200 1700
    HR32934J 170 230 38 38 30 2.5 2 294 560 41.7 4.44 1400 1800
    HR32036XJ 180 280 64 64 48 3 2.5 640 1130 60.4 14.3 1200 1600
    HR32936J 180 250 45 45 34 2.5 2 350 685 53.9 6.56 1300 1700
    HR32038XJ 190 290 64 64 48 3 2.5 650 1170 63.4 14.9 1100 1500
    HR32938J 190 260 45 45 34 2.5 2 365 715 55.3 6.83 1200 1600
    HR32040XJ 200 310 70 70 53 3 2.5 760 1370 67.4 18.9 1000 1400
    HR32940J 200 280 51 51 39 3 2.5 480 935 54.2 9.65 1100 1500
    HR32044XJ 220 340 76 76 57 4 3 885 1610 73.6 24.4 950 1300
    HR32944J 220 300 51 51 39 3 2.5 490 990 59.2 10.3 1000 1400
    HR32048XJ 240 360 76 76 57 4 3 920 1730 79.1 26.2 850 1200
    HR32948J 240 320 51 51 39 3 2.5 500 1040 65.1 11.1 950 1300
    HR32052XJ 260 400 87 87 65 5 4 1160 2160 86.3 38.5 800 1100
    HR32952J 260 360 63.5 63.5 48 3 2.5 730 1450 69.8 18.6 850 1100
    HR32056XJ 280 420 87 87 65 5 4 1180 2240 91.6 40.6 710 1000
    HR32956J 280 380 63.5 63.5 48 3 2.5 765 1580 75.3 20 800 1100
    HR32060XJ 300 460 100 100 74 5 4 1440 2700 98.4 56.6 670 900
    HR32960J 300 420 76 76 57 4 3 1010 2100 79.9 31.4 710 950
    HR32064XJ 320 480 100 100 74 5 4 1510 2910 104.5 60 630 850
    HR32972J 360 480 76 76 57 4 3 1080 2340 96.8 36.1 560 800

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