NTN - Cylindrical and Tapered Roller Bearings

Dimensions and Ratings
Load Rating:
3000
Basic
hrs
Load
L 10 Life
Ratings Axial
@ 500 rpm Load
K
Factor
Dynamic Radial Static Thrust Factor
Rating Rating e
C r
C or
Y 2
Cone
Number
B
Bore
Diameter
W i
Cone
Width
R a U V
Maximum
Shaft
Fillet
Radius *
Effective
Load
Center†
Minimum
Shaft
Shoulder
Diameter
Minimum
Shaft
Shoulder
Diameter
Cup
Number
D
Outside
Diameter
W o
Cup
Width
r X Z W
Maximum
Housing
Fillet
Radius *
Maximum Maximum
Housing Housing
Shoulder Shoulder
Diameter Diameter
Bearing
Width
lbs/N
Inch/mm
Inch/mm
24700 30500 0.40
110000 135000 1.50
49500
Series
7160 4910 1.46 49576 1.7500 1.2500 0.03 -0.28 2.17 2.13 49520 4.0000 1.0000 0.13 3.78 3.46 1.2500
31900 21900 44.450 31.750 0.8 -7.1 55.0 54.0 101.600 25.400 3.3 96.0 88.0 31.750
49577 1.7500 1.2500 0.14 -0.28 2.40 2.05
44.450 31.750 3.5 -7.1 61.0 52.0
7160 4910 1.46 49580 1.8750 1.2500 0.14 -0.28 2.36 2.17
31900 21900 47.625 31.750 3.5 -7.1 60.0 55.0
49520B 4.0000 1.0000 0.13 3.86 —— 1.2500
101.600 25.400 3.3 98.0 —— 31.750
49521 4.0000 1.1250 0.13 3.78 3.46 1.3750
101.600 28.575 3.3 96.0 88.0 34.925
455
12100 9800 1.23 52393 3.9375 1.4219 0.14 -0.01 4.57 4.29 52637B 6.3750 1.0313 0.13 6.10 —— 1.4375
7160 4910 1.46 49585 2.0000 1.2500 0.14 -0.28 2.60 2.32 49522 4.0000 1.0000 0.03 3.78 3.46 1.2500
31900 21900 50.800 31.750 3.5 -7.1 66.0 59.0 101.600 25.400 0.8 96.0 88.0 31.750
41500 67000 0.47
186000 298000 1.26
52000
Series
12100 9800 1.23 52375 3.7500 1.4219 0.14 -0.01 4.41 4.13 52618 6.1875 1.0313 0.13 5.98 5.59 1.4375
53600 43600 95.250 36.116 3.5 -0.3 112.0 105.0 157.162 26.195 3.3 152.0 142.0 36.512
12100 9800 1.23 52387 3.8750 1.4219 0.14 -0.01 4.49 4.25 52637 6.3750 1.0313 0.13 6.06 5.67 1.4375
53600 43600 98.425 36.116 3.5 -0.3 114.0 108.0 161.925 26.195 3.3 154.0 144.0 36.512
53600 43600 100.012 36.116 3.5 -0.3 116.0 109.0 161.925 26.195 303.0 3.3 155.0 —— 36.512
12100 9800 1.23 52400 4.0000 1.4219 0.14 -0.01 4.61 4.37 52638 6.3750 1.1563 0.13 6.06 5.63 1.5625
53600 43600 101.600 36.116 3.5 -0.3 117.0 111.0 161.925 29.370 3.3 154.0 143.0 39.688
12100 9800 1.23 52400A 4.0000 1.4219 0.14 -0.01 4.61 4.37 52639 6.3750 1.5625 0.13 6.18 5.83 1.6250
53600 43600 101.600 36.116 3.5 -0.3 117.0 111.0 161.925 39.688 3.3 157.0 148.0 41.275
23400 31000 0.88
104000 137000 0.68
55000C
Series
52401 4.0000 1.4219 0.31 -0.01 5.35 4.29
101.600 36.116 8.0 -0.3 136.0 109.0
6880 10400 0.66 55175C 1.7500 1.0594 0.14 0.30 2.76 2.52 55437 4.3750 0.8125 0.13 4.13 3.62 1.1875
30600 46300 44.450 26.909 3.5 7.6 70.0 64.0 111.125 20.638 3.3 105.0 92.0 30.162
6880 10400 0.66 55176C 1.7500 1.0594 0.03 0.30 2.56 2.54 55437B 4.3750 0.8125 0.13 4.21 —— 1.1875
30600 46300 44.450 26.909 0.8 7.6 65.0 64.5 111.125 20.638 3.3 107.0 —— 30.162
6880 10400 0.66 55187C 1.8750 1.0594 0.14 0.30 2.72 2.44 55443 4.4375 0.8125 0.13 4.17 3.62 1.1875
30600 46300 47.625 26.909 3.5 7.6 69.0 62.0 112.712 20.638 3.3 106.0 92.0 30.162
6880 10400 0.66 55196C 1.9675 1.0594 0.14 0.30 2.80 2.54
30600 46300 49.974 26.909 3.5 7.6 71.0 64.5
6880 10400 0.66 55197C 1.6968 1.0594 0.08 0.30 2.80 2.54
30600 46300 43.099 49.974 26.909 2.0 7.6 71.0 64.5
6880 10400 0.66 55200C 2.0000 1.0594 0.14 0.30 2.80 2.54
30600 46300 50.800 26.909 3.5 7.6 71.0 64.5
6880 10400 0.66 55206C 2.0625 1.0594 0.14 0.30 2.83 2.54
30600 46300 52.388 26.909 3.5 7.6 72.0 64.5
55212C 2.1250 1.0594 0.14 0.30 2.80 2.44
53.975 26.909 3.5 7.6 71.0 62.0
* The maximum fillet on the shaft or in the housing that the bearing corner will clear.
† Positive value indicates the effective load center is outside the backface of the cone.
For additional “B” cup dimensions, see pages 173 to 174.
For parts with a “J” prefix, use metric tolerances given on page 199 and fitting practice given on page 201.
Designate bearings with hollow rollers and pinned-type retainers.
Bearing is equipped with seals (and in some instances side rings).
141