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ARM Bore

Ring Dimensions

Free Gap Groove Dimensions Thrust Cap.
Part
Dec.
D
Tol

Width

W

Thick

T+ - .002

Min
Max
C
Tol

Width

A

Depth

B

Lbs
HT 87
.875
.934

+.031

.062 +- .003
.042
.281
.438
.919
+- .003
.046 +.003
.022
1130
HT 90
.901
.961
+.031
.078 +- .003
.042
.281
.438
.945
+- .003
.046 +.003
.022
1260
HT 93
.938
1.003
+.031
.078 +- .003
.042
.281
.438
.986
+- .003
.046 +.003
.024
1360
HT 100
1.000
1.070
+.031
.078 +- .003
.042
.281
.438
1.052
+- .003
.046 +.003
.024
1470
HT 102
1.023
1.094
+.031
.093 +- .003
.042
.281
.438
1.075
+- .005
.046 +.003
.026
1500
HT 106
1.062
1.134
+.031
.093 +- .003
.050
.281
.438
1.114
+- .005
.056 +.003
.026
1780
HT 112
1.125
1.202
+.031
.093 +- .003
.050
.375
.562
1.181
+- .005
.056 +.003
.028
1880
HT 118
1.188
1.270
+.031
.093 +- .003
.050
.375
.562
1.248
+- .005
.056 +.003
.030
1990
HT 125
1.250
1.337
+.031
.109 +- .003
.050
.375
.562
1.314
+- .005
.056 +.003
.032
2090
HT 131
1.312
1.404
+.031
.109 +- .003
.050
.375
.562
1.380
+- .005
.056 +.003
.034
2200
HT 137
1.375
1.472
+.031
.109 +- .003
.050
.375
.562
1.447
+- .005
.056 +.003
.036
2300
HT 143
1.438
1.535
+.031
.125 +- .003
.050
.375
.562
1.510
+- .005
.056 +.003
.036
2460
HT 145
1.456
1.557
+.031
.125 +- .003
.050
.375
.562
1.532
+- .005
.056 +.003
.038
2490
HT 150
1.500
1.607
+.031
.125 +- .003
.050
.375
.562
1.576
+- .005
.056 +.003
.038
2560
HT 156
1.562
1.668
+.046
.125 +- .003
.062
.437
.687
1.642
+- .005
.068 +.004
.040
3060
HT 162
1.625
1.736
+.046
.141 +- .005
.062
.437
.687
1.709
+- .005
.068 +.004
.042
3190
HT 165
1.653
1.765
+.046
.141 +- .005
.062
.437
.687
1.737
+- .005
.068 +.004
.042
3240
HT 168
1.688
1.804
+.046
.156 +- .005
.062
.437
.687
1.776
+- .005
.068 +.004
.044
3370
HT 175
1.750
1.870
+.046
.156 +- .005
.062
.437
.687
1.842
+- .005
.068 +.004
.046
3510
HT 181
1.812
1.933
+.046
.156 +- .005
.062
.437
.687
1.904
+- .005
.068 +.004
.046
3640
HT 185
1.850
1.975
+.046
.156 +- .005
.062
.437
.687
1.946
+- .005
.068 +.004
.048
3710
HT 187
1.875
2.000
+.046
.156 +- .005
.062
.437
.687
1.971
+- .005
.068 +.004
.048
3760
HT 193
1.938
2.068
+.046
.156 +- .005
.062
.500
.750
2.038
+- .005
.068 +.004
.050
3870
HT 196
1.968
2.098
+.046
.156 +- .005
.062
.500
.750
2.068
+- .005
.068 +.004
.050
3935
HT 200
2.000
2.131
+.046
.156 +- .005
.062
.500
.750
2.100
+- .005
.068 +.004
.050
4000
HT 206
2.062
2.197
+.046
.156 +- .005
.062
.500
.750
2.166
+_ .006
.086 +.005
.052
4380
HT 212
2.125
2.260
+.046
.156 +- .005
.078
.500
.750
2.229
+_ .006
.086 +.005
.052
5140
HT 218
2.188
2.331
+.046
.171 +- .005
.078
.500
.750
2.296
+_ .006
.086 +.005
.054
5470
HT 225
2.250
2.393
+.046
.171 +- .005
.078
.500
.750
2.358
+_ .006
.086 +.005
.054
5630
HT 231
2.312
2.459
+.046
.171 +- .005
.078
.500
.750
2.242
+_ .006
.086 +.005
.056
5790
HT 237
2.375
2.523
+.046
.171 +- .005
.078
.500
.750
2.487
+_ .006
.086 +.005
.056
5950
HT 244
2.440
2.592
+.046
.187 +- .005
.078
.500
.750
2.556
+_ .006
.086 +.005
.058
6270
HT 250
2.500
2.653
+.046
.187 +- .005
.078
.500
.750
2.616
+_ .006
.086 +.005
.058
6350
HT 253
2.531
2.688
+.046
.187 +- .005
.078
.500
.750
2.651
+_ .006
.086 +.005
.060
6510
HT 256
2.562
2.726
+.046
.187 +- .005
.093
.562
.812
2.686
+_ .006
.103 +.005
.062
8400
HT 262
2.625
2.790
+.046
.187 +- .005
.093
.562
.812
2.750
+_ .006
.103 +.005
.062
8750
HT 268
2.688
2.856
+.046
.187 +- .005
.093
.562
.812
2.816
+_ .006
.103 +.005
.062
8800
HT 271
2.717
2.882
+.062
.187 +- .005
.093
.562
.812
2.842
+_ .006
.103 +.005
.064
8875
HT 275
2.750
2.918
+.062
.187 +- .005
.093
.562
.812
2.878
+_ .006
.103 +.005
.064
8950
HT 281
2.813
2.985
+.062
.187 +- .005
.093
.625
.875
2.945
+_ .006
.103 +.005
.066
9100
HT 283
2.834
3.006
+.062
.187 +- .005
.093
.625
.875
2.966
+_ .006
.103 +.005
.066
9250
HT 287
2.875
3.056
+.062
.187 +- .005
.093
.625
.875
3.011
+_ .006
.103 +.005
.068
9400
HT 300
3.000
3.181
+.062
.187 +- .005
.093
.625
.875
3.136
+_ .006
.103 +.005
.068
9550
HT 306
3.062
3.247
+.062
.218 +- .005
.109
.625
.875
3.202
+_ .006
.120 +.005
.070
10470
HT 312
3.125
3.311
+.062
.218 +- .005
.109
.625
.875
3.265
+_ .006
.120 +.005
.070
10690
HT 315
3.250
3.343
+.062
.218 +- .005
.109
.625
.875
3.296
+_ .006
.120 +.005
.070
10800
HT 325
3.250
3.442
+.062
.218 +- .005
.109
.718
1.062
3.394
+_ .006
.120 +.005
.072
11120
HT 334
3.346
3.539
+.062
.218 +- .005
.109
.718
1.062
3.490
+_ .006
.120 +.005
.072
11450
HT 346
3.469
3.663
+.062
.218 +- .005
.109
.718
1.062
3.613
+_ .006
.120 +.005
.072
11870
HT 350
3.500
3.700
+.078
.250 +- .005
.109
.718
1.062
3.648
+_ .006
.120 +.005
.074
11970
HT 354
3.543
3.745
+.078
.250 +- .005
.109
.718
1.062
3.691
+_ .006
.120 +.005
.074
12120
HT 356
3.562
3.766
+.078
.250 +- .005
.109
.718
1.062
3.710
+_ .006
.120 +.005
.074
12190
HT 362
3.625
3.831
+.078
.250 +- .005
.109
.718
1.062
3.773
+_ .006
.120 +.005
.074
12380
HT 375
3.750
3.962
+.078
.250 +- .005
.109
.718
1.062
3.902
+_ .006
.120 +.005
.076
12600
HT 387
3.875
4.089
+.078
.250 +- .005
.109
.718
1.062
4.027
+_ .006
.120 +.005
.076
12800
HT 393
3.938
4.156
+.078
.250 +- .005
.109
.718
1.062
4.094
+_ .006
.120 +.005
.078
13230
HT 400
4.000
4.221
+.093
.250 +- .005
.109
.875
1.312
4.156
+_ .006
.120 +.005
.078
13690
HT 412
4.125
4.355
+.093
.250 +- .005
.109
.875
1.312
4.285
+_ .006
.120 +.005
.080
14110
HT 425
4.250
4.485
+.093
.250 +- .005
.109
.875
1.312
4.410
+_ .006
.120 +.005
.080
14540
HT 433
4.330
4.565
+.093
.250 +- .005
.109
.875
1.312
4.490
+_ .006
.120 +.005
.080
14960
HT 443
4.436
4.670
+.093
.250 +- .005
.109
.875
1.312
4.596
+_ .006
.120 +.005
.080
15170
HT 450
4.500
4.744
+.093
.250 +- .005
.109
.875
1.312
4.664
+_ .006
.120 +.005
.082
15390
HT 462
4.625
4.875
+.093
.250 +- .005
.109
.875
1.312
4.795
+_ .006
.120 +.005
.085
15830
HT 475
4.750
5.011
+.093
.281 +- .005
.109
.875
1.312
4.926
+_ .006
.120 +.005
.088
16250
HT 500
5.000
5.265
+.093
.281 +- .005
.109
.875
1.312
5.180
+_ .006
.120 +.005
.090
17110
HT 525
5.250
5.530
+.125
.312 +- .005
.125
1.000
1.500
5.435
+_ .006
.139 +.006
.092
20590
HT 537
5.375
5.660
+.125
.312 +- .005
.125
1.000
1.500
5.565
+_ .006
.139 +.006
.095
21110
HT 550
5.500
5.796
+.125
.312 +- .005
.125
1.000
1.500
5.696
+_ .006
.139 +.006
.098
21790
HT 575
5.750
6.050
+.125
.312 +- .005
.125
1.000
1.500
5.950
+_ .006
.139 +.006
.100
22570
HT 600
6.000
6.039
+.125
.312 +- .005
.125
1.000
1.500
6.204
+_ .006
.139 +.006
.102
23550
HT 625
6.250
6.568
+.125
.343 +- .005
.156
1.000
1.500
6.458
+- .008
.174 +.006
.104
29420
HT 650
6.500
6.832
+.156
.343 +- .005
.156
1.125
1.812
6.712
+- .008
.174 +.006
.106
30610
HT 662
6.625
6.975
+.156
.343 +- .005
.156
1.125
1.812
6.845
+- .008
.174 +.006
.110
31400
HT 675
6.750
7.100
+.156
.343 +- .005
.156
1.125
1.812
6.970
+- .008
.174 +.006
.110
32640
HT 700
7.000
7.350
+.156
.343 +- .005
.156
1.125
1.812
7.220
+- .008
.174 +.006
.110
34850
HT 725
7.250
7.630
+.187
.375 +- .005
.187
1.375
2.250
7.500
+- .008
.209 +.006
.125
38060
HT 750
7.500
7.890
+.187
.375 +- .005
.187
1.375
2.250
7.750
+- .008
.209 +.006
.125
39450
HT 800
8.000
8.400
+.187
.375 +- .005
.187
1.375
2.250
8.250
+- .008
.209 +.006
.125
41960
HT 825
8.250
8.665
+.187
.437 +- .005
.187
1.625
2.500
8.540
+- .008
.209 +.006
.145
43320
HT 850
8.500
8.915
+.187
.437 +- .005
.187
1.625
2.500
8.790
+- .008
.209 +.006
.145
44710
HT 875
8.750
9.205
+.187
.500 +- .005
.187
1.625
2.500
9.080
+- .008
.209 +.006
.165
48900
HT 900
9.000
9.455
+.187
.500 +- .005
.187
1.625
2.500
9.330
+- .008
.209 +.006
.165
49740
HT 905
9.055
9.509
+.187
.500 +- .005
.187
1.750
2.625
9.384
+- .008
.209 +.006
.165
50050
HT 950
9.500
9.955
+.187
.500 +- .005
.187
1.750
2.625
9.830
+- .008
.209 +.006
.165
52520
HT 984
9.840
10.295
+.187
.500 +- .005
.187
1.750
2.625
10.170
+- .008
.209 +.006
.165
53780
HT 1000
10.000
10.455
+.187
.500 +- .005
.187
1.750
2.625
10.330
+- .008
.209 +.006
.165
55400