CylindriCal and Tapered roller Bearings

Dimensions and Ratings
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
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
256000 525000 0.33
1140000 2330000 1.79
HM259000
Series
76900 44100 1.74 HM259048 12.5000 3.3750 0.14 -0.19 13.43 13.27 HM259010 17.6250 2.6875 0.13 16.84 16.46 3.3750
342000 196000 317.500 85.725 3.5 -4.8 341.0 337.0 447.675 68.262 3.3 428.0 418.0 85.725
310000 650000 0.33
1370000 2890000 1.79
HM261000
Series
91400 52400 1.74 HM261049 13.1250 3.5625 0.25 -0.24 14.29 14.06 HM261010 18.5000 2.8125 0.13 17.69 17.28 3.5625
407000 233000 333.375 90.488 6.4 -6.1 363.0 357.0 469.900 71.438 3.3 449.0 439.0 90.488
310000 655000 0.33 HM262700
1390000 2920000 1.79 Series
55000 143000 0.33
246000 635000 1.80
HM262748 13.6250 3.7500 0.25 -0.25 14.72 13.98 HM262710 19.2500 2.9375 0.13 18.90 18.62 3.7500
346.075 95.250 6.4 -6.4 374.0 355.0 488.950 74.612 3.3 480.0 473.0 95.250
LL264600
Series
14500 8260 1.76 LL264648 14.7500 1.1250 0.14 1.10 15.31 15.12 LL264610 17.0000 0.8125 0.13 16.69 16.42 1.1250
64500 36700 374.650 28.575 3.5 27.9 389.0 384.0 431.800 20.638 3.3 424.0 417.0 28.575
385000 825000 0.33 HM266400
1720000 3700000 1.80 Series
505000 930000 0.33 HM267100
2240000 4150000 1.80 Series
465000 1020000 0.33 M268700
2070000 4550000 1.80 Series
335000 820000 0.33 LM272200
1490000 3650000 1.80 Series
38500 48500 0.35
171000 216000 1.73
HM266446 15.0000 4.1250 0.25 -0.28 16.10 15.35 HM266410 21.5000 3.2500 0.25 21.30 20.39 4.1250
381.000 104.775 6.4 -7.1 409.0 390.0 546.100 82.550 6.4 541.0 518.0 104.775
HM266448 15.1250 4.1250 0.25 -0.28 16.26 15.47 HM266413 21.6515 3.2500 0.25 21.42 20.55 4.1250
384.175 104.775 6.4 -7.1 413.0 393.0 549.948 82.550 6.4 544.0 522.0 104.775
HM267146 15.0000 4.1250 0.25 -0.27 16.10 15.35 HM267110 19.2500 2.9375 0.13 18.90 18.62 4.2500
381.000 104.775 6.4 -6.9 409.0 390.0 488.950 74.612 3.3 480.0 473.0 107.950
HM267148 15.1250 4.1250 0.25 -0.27 16.26 15.47
384.175 104.775 6.4 -6.9 413.0 393.0
M268730 15.0000 4.5000 0.25 -0.37 16.10 15.31 M268710 23.2500 3.5000 0.25 23.11 22.13 4.5000
381.000 114.300 6.4 -9.4 409.0 389.0 590.550 88.900 6.4 587.0 562.0 114.300
M268749 16.3750 4.5000 0.25 -0.37 17.48 16.69
415.925 114.300 6.4 -9.4 444.0 424.0
LM272235 18.0000 3.3750 0.25 +0.49 19.13 18.35 LM272210 24.2500 2.6250 0.25 24.02 23.15 3.3750
457.200 85.725 6.4 +12.4 486.0 466.0 615.950 66.675 6.4 610.0 588.0 85.725
LM272249 19.0000 3.3750 0.25 +0.49 20.12 19.33
482.600 85.725 6.4 +12.4 511.0 491.0
H307700
Series
11300 6720 1.69 JH307749 2.1654 1.5354 0.12 -0.46 2.80 2.52 JH307710 4.3307 1.2598 0.10 4.09 3.82 1.5354
50400 29900 55.000 39.000 3.0 -11.7 71.0 64.0 110.000 32.000 2.5 104.0 97.0 39.000
60500 86000 0.34
269000 380000 1.76
HM318400
Series
17900 10400 1.71 JHM318448 3.5433 1.7323 0.12 -0.39 4.17 3.94 JHM318410 6.1024 1.3976 0.10 5.83 5.51 1.7323
79400 46400 90.000 44.000 3.0 -9.9 106.0 100.0 155.000 35.500 2.5 148.0 140.0 44.000
* 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).
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