NTN - Large Bearings
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Multi-Row Cylindrical Roller <strong>Bearings</strong><br />
B<br />
r<br />
B<br />
r<br />
r<br />
r<br />
D<br />
d FW<br />
d<br />
D<br />
Ew<br />
d<br />
d<br />
d 180320mm<br />
Type NNU<br />
Tapered bore<br />
Cylindrical bore<br />
taper 1:12<br />
Type NN<br />
Tapered bore<br />
Cylindrical bore<br />
taper 1:12<br />
Boundary dimensions Basic load ratings Bearing numbers<br />
dynamic static dynamic static<br />
mm kN kgf type NNU type NN<br />
Cylindrical tapered Cylindrical tapered<br />
d D B<br />
2<br />
r s min C r C or C r C or bore bore 1 bore bore 1<br />
180<br />
190<br />
200<br />
220<br />
240<br />
260<br />
280<br />
300<br />
280 74 2.1 565 995 57,500 102,000 NNU3036 NN3036 NN3036K<br />
260 52 2 355 705 36,000 72,000 NN3938 <br />
260 69 2 475 1,030 48,500 105,000 NNU4938 NNU4938K NN4938 NN4938K<br />
290 75 2.1 580 1,040 59,000 106,000 NNU3038 NN3038 NN3038K<br />
280 60 2.1 445 890 45,500 91,000 NN3940 <br />
280 80 2.1 555 1,180 56,500 120,000 NNU4940 NNU4940K NN4940 NN4940K<br />
310 82 2.1 655 1,170 66,500 119,000 NNU3040 NN3040 NN3040K<br />
310 109 2.1 890 1,730 90,500 177,000 NN4040 <br />
340 112 3 970 1,660 99,000 169,000 NN3140 <br />
300 60 2.1 470 975 48,000 99,500 NN3944 NN3944K<br />
300 80 2.1 585 1,300 59,500 132,000 NNU4944 NNU4944K NN4944 NN4944K<br />
340 90 3 815 1,480 83,000 151,000 NNU3044 NN3044 NN3044K<br />
370 120 4 1,080 1,890 111,000 193,000 NNU3144 NN3144 <br />
320 60 2.1 490 1,060 50,000 109,000 NNU3948 NN3948 NN3948K<br />
320 80 2.1 610 1,410 62,500 144,000 NNU4948 NNU4948K NN4948 NN4948K<br />
360 92 3 855 1,600 87,000 163,000 NNU3048 NN3048 NN3048K<br />
400 128 4 1,250 2,230 127,000 228,000 NN3148 <br />
360 75 2.1 660 1,390 67,000 141,000 NN3952 NN3952K<br />
360 100 2.1 900 2,070 92,000 211,000 NNU4952 NNU4952K NN4952 NN4952K<br />
400 104 4 1,060 1,990 108,000 203,000 NN3052 NN3052K<br />
400 140 4 1,500 3,100 153,000 315,000 NNU4052 NN4052 <br />
350 52 2 320 765 32,500 78,000 NNU3856 <br />
350 69 2 505 1,300 51,000 132,000 NNU4856 NNU4856K <br />
380 75 2.1 690 1,510 70,500 154,000 NN3956 NN3956K<br />
380 100 2.1 925 2,200 94,500 224,000 NNU4956 NNU4956K NN4956 NN4956K<br />
420 106 4 1,080 2,080 110,000 212,000 NN3056 NN3056K<br />
420 90 3 945 2,050 96,000 209,000 NN3960 NN3960K<br />
420 118 3 1,200 2,800 122,000 285,000 NNU4960 NNU4960K NN4960 NN4960K<br />
460 118 4 1,330 2,560 135,000 261,000 NNU3060 NN3060 NN3060K<br />
460 160 4 1,890 4,050 193,000 410,000 NN4060 <br />
320 400 80 2.1 610 1,600 62,500 163,000 NNU4864 <br />
1 "K" indicates bearings have tapered bore with a taper ratio of 1: 12. 2 Smallest allowable dimension for chamfer dimension r.<br />
B-58
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