| Bushing |
Dimension
(Inches) |
Cap Screws
Required |
Stock Bore Range |
Set Screw Size |
Average Weight
(Approx.) |
| A |
B |
D |
E |
F |
G |
L |
Bolt Circle |
Minimum |
Standard Keyway |
Shallow Keyway |
| H |
5/16 |
1.625 |
2 1/2 |
1 |
7/8 |
1/8 |
1 1/4 |
2 |
2-1/4x3/4 |
1/2 |
1 1/4 |
1 1/2 |
1/4 |
.7 |
| JA |
3/8 |
1.375 |
2 |
11/16 |
9/16 |
1/8 |
1 1/16 |
1.665 |
3-10x1 |
3/8 |
1 |
1 1/4 |
10-24 |
.9 |
| SH |
7/16 |
1.871 |
2 11/16 |
7/8 |
13/16 |
3/16 |
1 5/16 |
2 1/4 |
3-1/4x1 3/8 |
1/2 |
1 3/8 |
1 11/16 |
1/4 |
1 |
| SDS |
1/2 |
2.187 |
3 3/16 |
7/8 |
3/4 |
3/16 |
1 3/8 |
2 11/16 |
3-1/4x1 3/8 |
1/2 |
1 11/16 |
2 |
1/4 |
1 |
| SD |
1/2 |
2.187 |
3 3/16 |
1 5/16 |
1 1/4 |
3/16 |
1 13/16 |
2 11/16 |
3-1/4x1 7/8 |
1/2 |
1 11/16 |
1 15/16 |
1/4 |
1.5 |
| SK |
9/16 |
2.812 |
3 7/8 |
1 3/8 |
1 1/4 |
3/16 |
1 15/16 |
3 5/16 |
3-5/16x2 |
1/2 |
2 1/8 |
2 1/2 |
5/16 |
2 |
| SF |
9/16 |
3.125 |
4 5/8 |
1 1/2 |
1 1/4 |
1/4 |
2 1/16 |
3 7/8 |
3-3/8x2 |
1/2 |
2 5/16 |
2 13/16 |
5/16 |
3 |
| E |
3/4 |
3.834 |
6 |
1 7/8 |
1 5/8 |
5/16 |
2 5/8 |
5 |
3-1/2x2 3/4 |
7/8 |
2 7/8 |
3 1/2 |
3/8 |
10 |
| F |
13/16 |
4.437 |
6 5/8 |
2 13/16 |
2 1/2 |
3/8 |
3 5/8 |
5 3/8 |
3-9/16x3 5/8 |
1 |
3 5/16 |
3 15/16 |
1/2 |
11.5 |
| J |
1 |
5.148 |
7 1/4 |
3 1/2 |
3 3/16 |
3/8 |
4 1/2 |
6 1/4 |
3-5/8x4 1/2 |
1 7/16 |
3 3/4 |
4 1/2 |
5/8 |
18 |
| M |
1 1/4 |
6.500 |
9 |
5 1/2 |
5 3/16 |
3/8 |
6 3/4 |
7 7/8 |
4-3/4x6 3/4 |
1 15/16 |
4 3/4 |
5 1/2 |
3/4 |
37 |
| N |
1 1/2 |
7.000 |
10 |
6 5/8 |
6 1/4 |
7/16 |
8 1/8 |
8 1/2 |
4-7/8x8 1/2 |
2 7/16 |
5 1/8 |
6 |
3/4 |
57 |
| P |
1 3/4 |
8.250 |
11 3/4 |
7 5/8 |
7 1/4 |
1/2 |
9 3/8 |
10 |
4-1x9 1/2 |
2 15/16 |
5 15/16 |
7 |
7/8 |
120 |
| W |
2 |
10.437 |
15 |
9 3/8 |
9 |
1/2 |
11 3/8 |
12 3/4 |
4-1 1/8x11 1/2 |
4 |
7 1/2 |
8 1/2 |
1 |
250 |
| S |
3 1/4 |
12.125 |
17 3/4 |
12 1/2 |
12 |
1/2 |
15 3/4 |
15 |
5-1 1/4x15 1/2 |
6 |
8 1/4 |
10 |
1 1/4 |
400 |
Inch
Bore
| Bushing |
Bores |
Key Seat |
Bushing |
Bores |
Key Seat |
| JA |
3/8 -7/16 |
No K.W. |
SF |
1/2 - 2 1/4 |
Std. |
| 1/2 -1 |
Std. |
2 1/4 |
5/8 x 3/16 |
| 1 1/16 - 1 1/8 |
1/4 - 1/16 |
2 5/16 -2 1/2 |
5/8 x 3/16 |
| 1 3/16 |
1/4 - 1/16 |
2 9/16 - 2 3/4 |
5/8 x 1/16 |
| 1 1/4 |
No K.S. |
2 13/16 - 2 1/2 |
3/4 x 1/16 |
| SH |
1/2 - 1 3/8 |
Std. |
2 15/16 |
3/4 x 1/32 |
| 1 5/16 - 1 3/8 |
3/8 x 3/16 |
E |
7/8 - 2 7/8 |
Std. |
| 1 7/16 - 1 1/2 |
3/8 x 1/16 |
2 15/16 - 3 1/4 |
3/4 x 1/8 |
| 1 9/16 - 1 5/8 |
3/8 - 1/16 |
3 3/8 - 3 1/2 |
7/8 x 1/16 |
| 1 11/16 |
No K.S. |
F |
1 - 3 5/16 |
Std. |
| SDS |
1/2 - 1 11/16 |
Std. |
3 3/8 x 3 3/4 |
7/8 x 1/16 |
| 1 3/4 |
3/8 x 1/8 |
3 7/8 x 3 15/16 |
1 x 1/8 |
| 1 13/16 |
1/2 x 1/8 |
4 |
None |
| 1 7/8 - 1 15/16 |
1/2 x 1/16 |
J |
1 1/4 - 3 3/4 |
Std. |
| 2 |
No K.S. |
3 13/16 - 4 1/2 |
1 x 1/8 |
| SD |
1/2 - 1 11/16 |
Std. |
M |
2 - 4 3/4 |
Std. |
| 1 3/4 |
3/8 x 1/8 |
4 13/16 - 5 1/2 |
1 1/4 x 1/4 |
| 1 13/16 |
1/2 x 1/8 |
N |
2 7/16 - 5 |
Std. |
| 1 7/8 |
1/2 x 1/16 |
5 1/8 - 5 1/2 |
1 1/4 x 1/4 |
| 1 15/16 |
1/2 x 1/16 |
5 9/16 - 6 |
1 1/2 x 1/4 |
| 2 |
No K.S. |
P |
2 15/16 - 5 15/16 |
Std. |
| SK |
1/2 - 2 1/8 |
Std. |
6 - 6 1/2 |
1 1/2 x 1/4 |
| 2 3/16 - 2 1/4 |
1/2 x 1/8 |
6 9/16 - 7 |
1 3/4 x 1/8 |
| 2 5/16 2 1/2 |
5/8 x 1/16 |
W |
4 - 7 1/2 |
Std. |
| 2 9/16 - 2 5/8 |
No K.S. |
7 9/16 - 8 1/2 |
2 x 1/4 |
Millimeter
Bore
| Bushing |
Bore MM |
Key ** WXT |
Bushing |
Bore MM |
Key ** WXT |
| SH |
24, 25
28, 30 |
8 x 7 |
E |
35, 38 |
10 x 8 |
| 40, 42 |
12 x 8 |
| 32, 35 |
10 x 8 |
48, 50 |
14 x 9 |
| SDS |
24, 25
28, 30 |
8 x 7 |
55 |
16 x 10 |
| 60, 65 |
18 x 11 |
32, 35
38 |
10 x 8 |
70, 75 |
20 x 12 |
| F |
48, 50 |
14 x 9 |
| 40,42 |
12 x 8 |
55 |
16 x 10 |
| SD |
24, 25
28, 30 |
8 x 7 |
60, 65 |
18 x 11 |
| 70, 75 |
20 x 12 |
32, 35
38 |
10 x 8 |
80, 85 |
22 x 14 |
| 90 |
25 x 14 |
| 40,42 |
12 x 8 |
J |
50 |
14 x 9 |
| SK |
24, 25
28, 30 |
8 x 7 |
55 |
16 x 10 |
| 60, 65 |
18 x 11 |
32, 35
38 |
10 x 8 |
70, 75 |
20 x 12 |
| 80, 85 |
22 x 14 |
| 40,42 |
12 x 8 |
90, 95 |
25 x 14 |
| 48, 50 |
14 x 9 |
100 |
28 x 16 |
| 55 |
16 x 10 |
|
| SF |
28, 30 |
8 x 7 |
32, 35
38 |
10 x 8 |
| 40,42 |
12 x 8 |
| 48, 50 |
14 x 9 |
| 55 |
16 x 10 |
| 60 |
18 x 11 |
** Important - The metric system does not refer to keyseat or keyway
dimensions as does the English system; instead dimensions are given for the key itself
which is rectangular in shape not square as in the English system.
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