NTN - Cylindrical and Tapered Roller Bearings

Tapered Roller Bearings
W
W o
W
W o
X U B
a
W i
R
V
Z
D
X U B
a
W i
R
V
D
r
r
TS Type
TSF Type
Load Rating:
3000
Basic
hrs L
Load
10 Life
Ratings Axial
@ 500 rpm Load
K
Factor
Dynamic Radial Static Thrust Factor
Rating Rating e
C r
lbs/N
C or
Y 2
59000 79000 0.32
262000 350000 1.85
6300
Series
455
Series
455
Series
6376 2.3750 2.2050 0.14 -0.76 3.03 2.72
60.325 56.007 3.5 -19.3 77.0 69.0
17300 9640 1.80 6379 2.5625 2.2050 0.14 -0.76 3.31 3.03 J6327 6320 5.3447 5.5118 1.7500 0.13 5.35 4.96 4.69 4.61 2.1250
77200 42900 65.088 56.007 3.5 -19.3 84.0 77.0 140.000 135.755 44.450 3.3 136.0 126.0 119.0 117.0 53.975
17300 9640 1.80 6381 2.1649 2.2050 0.14 -0.76 2.99 2.76 J6327 6321 5.1875 5.5118 1.7500 0.13 4.80 5.35 4.45 4.69 2.1250
77200 42900 54.988 56.007 3.5 -19.3 76.0 70.0 131.762 140.000 44.450 3.3 122.0 136.0 113.0 119.0 53.975
17300 9640 1.80 6382 2.5000 2.2050 0.17 -0.76 3.31 3.03
77200 42900 63.500 56.007 4.3 -19.3 84.0 77.0
17300 9640 1.80 6386 2.6250 2.2050 0.17 -0.76 3.43 3.03
77200 42900 66.675 56.007 4.3 -19.3 87.0 77.0
17300 9640 1.80 6386A 2.6250 2.2050 0.34 -0.76 3.73 3.03
77200 42900 66.675 56.007 8.7 -19.3 94.7 77.0
17300 9640 1.80 6389 2.6250 2.2050 0.25 -0.76 3.58 3.03
77200 42900 66.675 56.007 6.4 -19.3 91.0 77.0
455
Series
6391 2.3617 2.2050 0.14 -0.76 3.03 2.72
59.987 56.007 3.5 -19.3 77.0 69.0
17300 9640 1.80 J6392 2.5591 2.2050 0.12 -0.76 3.27 3.03
77200 42900 65.000 56.007 3.0 -19.3 83.0 77.0
64000 91000 0.36
285000 405000 1.66
Cone
Number
6400
Series
B
Bore
Diameter
Cone
Width
Inch/mm
6454 2.7500 2.1350 0.20 -0.59 3.66 3.11
69.850 54.229 5.0 -15.0 93.0 79.0
6455 2.2500 2.1350 0.14 -0.59 2.91 2.60
57.150 54.229 3.5 -0.15 74.0 66.0
18700 11600 1.61 6460 2.8750 2.1350 0.14 -0.59 3.66 3.34 6420
83300 51600 73.025 54.229 3.5 -15.0 93.0 87.0
18700 11600 1.61 6461 3.0000 2.1350 0.14 -0.59 3.78 3.52 6420B
83300 51600 76.200 54.229 3.5 -15.0 96.0 89.0
18700 11600 1.61 6461A 3.0000 2.1350 0.38 -0.59 4.25 3.52
83300 51600 76.200 54.229 9.7 -15.0 108.0 89.0
W i
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 Minimum
Housing
Shoulder
Diameter
Inch/mm
Maximum
Housing
Shoulder
Diameter
Bearing
Width
6320 5.3447 1.7500 0.13 4.96 4.61 2.1250
135.755 44.450 3.3 126.0 117.0 53.975
6420 5.8750 1.7500 0.13 5.51 5.08 2.1250
149.225 44.450 3.3 140.0 129.0 53.975
6420B 5.8750 1.7500 0.13 5.51 —— 2.1250
149.225 44.450 3.3 140.0 —— 53.975
6425 6.0000 1.7500 0.13 5.51 5.08 2.1250
152.400 44.450 3.3 140.0 129.0 53.975
6425 6.0000 1.7500 0.13 5.51 5.08 2.1250
152.400 44.450 3.3 140.0 129.0 53.975
* 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).
132