Table 26. AFBMA Standard for Shafts for Tapered Roller Bearing Locknuts. Inch Design
Depth
Length of Keyway = 2M + L 2
Length of Keyway = U + M
S
M
L 2
H
H
L 1
S
M M
U
V 2
V 2
V 2
A
V 2
A
Threads ( see footnotes )
Threads ( see footnotes )
W
W
1/8 ” (3.18 mm)
1/8 ” (3.18 mm)
Clamped Mounting
Adjustable Mounting
Threads a
Relief
Keyway
Length
Major Dia. Max. 0.391 0.469 0.586 0.664 0.781 0.969 1.173 1.312 1.376 1.563 1.767 1.967 2.157 2.360 2.548 2.751 2.933 3.137
Pitch Dia. Max.
Minor Dia. Max. 0.3527 0.4307 0.5477 0.6257 0.7427 0.9307 1.1048 1.2443 1.3078 1.4948 1.6988 1.8988 2.0888 2.2918 2.4798 2.6828 2.8308 3.0348
Dia. A Max.
Width W Max. 0.078 0.078 0.078 0.078 0.078 0.078 0.109 0.109 0.109 0.109 0.141 0.141 0.141 0.141 0.141 0.141 0.172 0.172
Depth H Max. 0.094 0.094 0.094 0.078 0.094 0.125 0.125 0.125 0.125 0.125 0.125 0.125 0.125 0.156 0.156 0.156 0.188 0.188
Width S Min. 0.125 0.125 0.125 0.125 0.188 0.188 0.188 0.188 0.188 0.312 0.312 0.312 0.312 0.312 0.312 0.312 0.312 0.375
V 2
L 1
M
U
L 2
Locknut Number
Bearing Bore 0.3937 0.4724 0.5906 0.6693 0.7874 0.9843 1.1811 1.3750 1.3780 1.5748 1.7717 1.9685 2.1654 2.3622 2.5591 2.7559 2.9528 3.1496
No. per inch
Max. 0.312 0.406 0.500 0.562 0.703 0.875 1.062 1.188 1.250 1.438 1.656 1.859 2.047 2.250 2.422 2.625 2.781 3.000
Max. 0.609 0.797 0.828 0.891 0.922 1.016 1.016 1.078 1.078 1.078 1.078 1.203 1.203 1.297 1.359 1.359 1.422 1.422
Max. 0.391 0.484 0.516 0.547 0.547 0.609 0.609 0.641 0.641 0.641 0.641 0.703 0.703 0.766 0.797 0.797 0.828 0.828
Min. 0.094 0.094 0.094 0.094 0.094 0.125 0.125 0.125 0.125 0.125 0.156 0.156 0.156 0.156 0.156 0.250 0.250 0.250
Min. 0.469 0.562 0.594 0.625 0.625 0.719 0.719 0.750 0.750 0.750 0.781 0.844 0.844 0.906 0.938 1.000 1.031 1.031
N-00 N-01 N-02 N-03 N-04 N-05 N-06
32 32 32 32 32 32 18 18 18 18 18 18 18 18 18 18 12 12
0.3707 0.4487 0.5657 0.6437 0.7607 0.9487 1.1369 1.2764 1.3399 1.5269 1.7309 1.9309 2.1209 2.3239 2.5119 2.7149 2.8789 3.0829
0.3421 0.4201 0.5371 0.6151 0.7321 0.9201 1.0942 1.2337 1.2972 1.4842 1.6882 1.882 2.0782 2.2812 2.4692 2.6722 2.8095 3.0135
TN-065 TN-07 TN-08 TN-09 TN-10 TN-11 TN-12 TN-13 TN-14 TAN-15 TAN-16
a Threads are American National form Class 3. All dimensions in inches. For dimensions in millimeters, multiply inch values, except thread diameters, by 25.4 and round results to two decimal places. These data apply to steel. When either the nut or the shaft is made of stainless steel, aluminum, or other material having a tendency to seize, it is recommended that the maximum thread diameter of the shaft, both major and pitch, be reduced by 20 percent of the pitch diameter tolerance listed in the Standard. For sizes larger than shown, see ANSI/ABMA 8.2-1991.
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