NTN - Large Bearings
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Four Row Tapered Roller <strong>Bearings</strong><br />
C2<br />
r<br />
r1<br />
B2<br />
D<br />
d<br />
d 269.875304.800mm<br />
Boundary dimensions<br />
Basic load ratings<br />
dynamic static dynamic static<br />
mm kN kgf<br />
d D B 2 C 2 r s min<br />
1<br />
r ls min<br />
1<br />
C r C or C r C or<br />
269.875<br />
270<br />
275<br />
276.225<br />
279.400<br />
279.578<br />
280<br />
285.750<br />
288.925<br />
292.100<br />
300<br />
300.038<br />
304.648<br />
381.000 282.575 282.575 3.3 3.3 2,470 6,850 252,000 700,000<br />
410 222 222 4 4 1,910 4,550 195,000 465,000<br />
385 200 200 3 3 1,610 4,250 165,000 435,000<br />
406.400 268.290 260.355 6.4 1.5 2,110 6,000 216,000 610,000<br />
381.000 269.875 269.875 3.3 1.5 2,240 6,450 229,000 655,000<br />
393.700 269.875 269.875 6.4 1.5 1,940 5,350 197,000 545,000<br />
419.100 292.100 292.100 6.4 3.3 2,770 6,950 283,000 705,000<br />
469.900 346.075 349.250 3.3 6.4 3,500 8,700 355,000 885,000<br />
380.898 244.475 244.475 3.3 1.5 1,950 6,200 199,000 635,000<br />
380 290 290 3.1 1.7 2,470 7,250 252,000 740,000<br />
395 288 288 4 5 2,560 7,100 261,000 725,000<br />
380.898 244.475 244.475 3.3 1.5 1,950 6,200 199,000 635,000<br />
406.400 298.450 298.450 3.3 3.3 2,980 8,300 305,000 850,000<br />
476.250 296.047 292.100 3.3 1.5 3,050 6,800 310,000 695,000<br />
424 310 310 4 5 2,570 7,450 262,000 760,000<br />
430 280 280 4 4 2,690 7,100 275,000 725,000<br />
430 300 300 4 4 2,690 7,100 275,000 725,000<br />
460 360 360 4 4 4,050 10,100 415,000 1,030,000<br />
470 270 270 4 4 3,200 7,250 325,000 740,000<br />
470 292 292 4 4 3,500 8,300 360,000 845,000<br />
500 332 332 5 6 3,600 8,100 370,000 825,000<br />
422.275 311.150 311.150 3.3 3.3 3,350 9,600 340,000 980,000<br />
438.048 279.400 279.400 3.3 3.3 2,470 6,500 252,000 665,000<br />
438.048 280.990 279.400 4.8 3.3 2,630 6,900 268,000 700,000<br />
304.800 419.100 269.875 269.875 6.4 1.5 2,390 6,850 244,000 695,000<br />
444.500 247.650 241.300 1.5 8 1,850 4,600 188,000 470,000<br />
1 Minimum allowable dimension for chamfer dimension r or r1.<br />
B-186