NTN - Large Bearings

Double Row Tapered Roller Bearings (Inside Direction)
Inch system sizes
C1
r
D
r1
B
d
a
d 279.400384.175mm
Boundary dimensions
Basic load ratings
dynamic static dynamic static
mm kN kgf
d D B C 1 C r C or C r C or
279.400
285.750
288.925
300.038
304.648
304.800
304.902
305.000
317.500
333.375
343.052
346.075
347.662
355.600
368.300
384.175
393.700 127.000 127.000 1,130 2,670 115,000 272,000
457.200 244.475 244.475 3,550 7,900 365,000 805,000
380.898 117.475 117.475 1,140 3,100 116,000 315,000
406.400 144.462 144.463 1,740 4,150 177,000 425,000
422.275 150.812 150.813 1,950 4,800 198,000 490,000
438.048 131.762 131.762 1,440 3,250 147,000 330,000
419.100 130.175 130.175 1,400 3,400 142,000 350,000
444.500 107.950 111.126 1,080 2,300 110,000 234,000
412.648 128.588 128.588 1,500 3,700 153,000 380,000
438.048 134.145 138.112 1,530 3,450 156,000 350,000
422.275 128.588 128.587 1,320 3,500 135,000 360,000
447.675 158.750 158.750 1,990 4,800 203,000 485,000
469.900 166.688 166.688 2,320 5,500 237,000 565,000
457.098 122.238 122.238 1,380 3,450 141,000 350,000
488.950 174.625 174.625 2,490 6,150 254,000 630,000
469.900 138.112 138.112 1,860 4,550 190,000 465,000
444.500 114.300 112.712 1,120 3,500 114,000 355,000
457.200 120.650 120.650 1,440 3,900 147,000 400,000
482.600 128.588 133.350 1,630 3,850 166,000 390,000
488.950 153.988 153.988 2,030 5,000 207,000 510,000
501.650 111.125 127.000 1,550 3,650 158,000 375,000
523.875 185.738 185.738 2,610 6,550 266,000 665,000
546.100 193.675 193.675 3,150 8,050 320,000 820,000
Remarks: 1. The above chamfer of inner and outer ring are bigger than ras max or rlas max.
2. Bearing numbers marked "" designate bearing with hollow rollers and pin type cages.
B-164