NTN - Large Bearings

Single Row Tapered Roller Bearings
Inch system sizes
r1
T
C
D
B
r
d
a
d 266.700304.800mm
Boundary dimensions
Basic load ratings
dynamic static dynamic static
mm kN kgf
d D T B C C r C or C r C or
266.700
269.875
273.050
276.225
279.400
279.982
280.000
280.192
285.750
288.925
292.100
298.450
299.974
300.038
444.500 120.650 117.475 88.900 1,570 3,050 160,000 310,000
381.000 74.612 74.612 57.150 885 1,790 90,500 183,000
393.700 73.817 69.850 50.005 780 1,400 79,500 143,000
352.425 36.512 34.925 23.812 295 605 30,000 61,500
374.650 47.625 47.625 34.925 470 1,010 48,000 103,000
469.900 95.250 93.662 69.850 1,180 2,170 121,000 222,000
488.950 120.650 120.650 92.075 1,760 2,970 180,000 305,000
380.898 65.088 65.088 49.212 660 1,550 67,500 159,000
406.400 69.850 67.673 53.975 760 1,550 77,500 158,000
406.400 69.850 67.673 53.975 760 1,550 77,500 158,000
358.775 33.338 31.750 22.225 263 540 26,900 55,000
380.898 65.088 65.088 49.212 660 1,550 67,500 159,000
406.400 77.788 77.788 60.325 1,010 2,080 103,000 212,000
374.650 47.625 47.625 34.925 470 1,010 48,000 103,000
469.900 95.250 93.662 69.850 1,180 2,170 121,000 222,000
558.800 136.525 136.525 98.425 1,950 3,800 199,000 385,000
444.500 63.500 61.912 39.688 630 1,150 64,000 117,000
495.300 141.288 141.288 114.300 2,440 4,900 249,000 500,000
422.275 82.550 82.550 63.500 1,130 2,400 116,000 245,000
393.700 50.800 50.800 38.100 485 1,030 49,500 105,000
406.400 63.500 63.500 47.625 700 1,580 71,500 161,000
304.800 438.048 76.200 76.992 53.975 805 1,590 82,000 163,000
444.500 63.500 61.912 39.688 630 1,150 64,000 117,000
495.300 76.200 74.612 53.975 1,140 1,940 116,000 198,000
495.300 95.250 92.075 69.850 1,230 2,350 126,000 240,000
Remarks: 1. With regard to the chamfer dimensions on the back face of the inner and outer rings, installation dimensions ras and r1as are larger than the maximum value.
2. Bearing numbers marked "" designate bearing with hollow rollers and pin type cages.
B-114