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Standard Keyway Dimensions
Worksheet in B-7249.xls
STANDARD KEYSEAT DIMENSIONS
A
B
+0.000
-0.015
C
+0.002
-0.000
D
NOMINAL SHAFT DIAMETER
BOTTOM OF SHAFT TO BOTTOM OF KEYWAY
WIDTH
REFERENCE DEPTH
0.3750
0.322
0.094
0.053
0.4375
0.386
0.094
0.052
0.5000
0.430
0.125
0.070
0.5625
0.493
0.125
0.070
0.6250
0.517
0.188
0.108
0.6875
0.581
0.188
0.107
0.7500
0.644
0.188
0.106
0.8125
0.708
0.188
0.105
0.8750
0.771
0.188
0.104
0.9375
0.796
0.250
0.142
1.0000
0.859
0.250
0.141
1.0625
0.923
0.250
0.140
1.1250
0.986
0.250
0.139
1.1875
1.049
0.250
0.138
1.2500
1.112
0.250
0.138
1.3125
1.136
0.313
0.176
1.3750
1.201
0.313
0.175
1.4375
1.224
0.375
0.214
1.5000
1.289
0.375
0.211
1.5625
1.351
0.375
0.211
1.6250
1.416
0.375
0.209
1.6875
1.478
0.375
0.209
1.7500
1.542
0.375
0.208
1.8125
1.526
0.500
0.287
1.8750
1.591
0.500
0.284
1.9375
1.654
0.500
0.284
2.0000
1.718
0.500
0.282
2.0625
1.781
0.500
0.282
2.1250
1.845
0.500
0.280
2.1875
1.908
0.500
0.280
2.2500
1.972
0.500
0.278
2.3125
1.956
0.625
0.357
2.3750
2.021
0.625
0.354
2.4375
2.083
0.625
0.354
2.5000
2.148
0.625
0.352
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