Keyway Chart

Transeals - Keyway Chart
Page 1 of 3
Keyway Chart
Welcome
Location
Transmission
Bushes
Pulleys
Belts
Vector Belts
Roller Chain
& Sprockets
The following tables show standard

dimensions for keys and their grooves.
Keyway Chart
Seals
Specification &
Size Listings
Metric Rectangular
B.S.4235 : PART 1 : 1972
Seal Maker
Hallite
O-Rings
Catalogues
Online
Hardcopies
Contact Us
Legal
Privacy
Statement
Nominal
Shaft Diam Key
Size
To
Over
(incl.)
Dimensions (mm)
A
10
12
4x4
3.970
4.000
2.5
2.6
3.985
4.015
1.8
1.9
4.030
3.970
0.16
12
17
5x5
4.970
5.000
3.0
3.1
4.985
5.015
2.3
2.4
5.030
4.970
0.25
17
22
6x6
5.970
6.000
3.5
3.6
5.985
6.015
2.8
2.9
6.030
5.970
0.25
22
30
8x7
7.964
8.000
4.0
4.2
7.982
8.018
3.3
3.5
30
38
10 x 9.964
10.000
8
5.0
5.2
9.982
10.018
38
44
12 x 11.957
8
12.000
5.0
5.2
44
50
14 x 13.957
14.000
9
50
58
58
7.000
6.910
0.25
3.3
3.5
10.000 8.000
9.964 7.910
0.40
11.979
12.021
3.3
3.5
12.000 8.000
11.957 7.910
0.40
5.5
5.7
13.979
14.021
3.8
4.0
14.000 9.000
13.957 8.910
0.40
16 x 15.957
10 16.000
6.0
6.2
15.979
16.021
4.3
4.5
16.000 10.000
0.40
15.957 9.910
65
18 x 17.957
11 18.000
7.0
7.2
17.979
18.021
4.4
4.6
18.000 11.000
0.40
17.957 10.890
65
75
20 x 19.948
12 20.000
7.5
7.7
19.974
20.026
4.9
5.1
20.000 12.000
0.60
19.948 11.890
75
85
22 x 21.948
14 22.000
9.0
9.2
21.974
22.026
5.4
5.6
22.000 14.000
0.60
21.948 13.890
85
95
25 x 24.948
14 25.000
9.0
9.2
24.974
25.026
5.4
5.6
25.000 14.000
0.60
24.948 13.890
95
110
28 x 27.948 10.0 27.974

16 28.000 10.2 28.026
6.4
6.6
28.000 16.000
0.60
27.948 15.890
110
130
32 x 31.938 11.0 31.969

18 32.000 11.2 32.031
7.4
7.6
32.000 18.000
0.60
31.938 17.890
130
150
36 x 35.938 12.0 35.969

20 36.000 12.3 36.031
8.4
8.7
36.000 20.000
1.00
35.938 19.870
150
170
40 x 39.938 13.0 39.969

22 40.000 13.3 40.031
9.4
9.7
40.000 22.000
1.00
39.938 21.870
170
200
45 x 44.938 15.0 44.969 10.4 45.000 25.000

1.00
25 45.000 15.3 45.031 10.7 44.938 24.870
200
230
50 x 49.938 17.0 49.969 11.4 50.000 28.000

1.00
28 50.000 17.3 50.031 11.7 49.938 27.870
http://www.transeals.com.au/transmission/keyway_chart.html
8.000
7.964
17/03/2010
Page 2 of 3
Imperial Rectangular
B.S.46 : PART 1 : 1958
Nominal
Shaft Diam
Key
Size
Dimensions (Inches)
Over
To
(incl.)
1 1/4
5/16 0.311 0.146 0.312 0.112 0.314 0.253

0.010
x 1/4 0.312 0.152 0.313 0.118 0.312 0.250
1 1/4 1 1/2
3/8 x 0.374 0.150 0.375 0.108 0.377 0.253

0.010
1/4 0.375 0.156 0.376 0.114 0.375 0.250
1 1/2 1 3/4
7/16
x
5/16
1 3/4
1/2 x 0.499 0.190 0.500 0.131 0.502 0.315

0.020
5/16 0.500 0.196 0.501 0.137 0.500 0.312
2 1/2
5/8 x 0.624 0.260 0.625 0.185 0.627 0.441

0.020
7/16 0.625 0.266 0.626 0.191 0.625 0.438
2 1/2
3/4 x 0.749 0.299 0.750 0.209 0.752 0.503

0.020
1/2 0.750 0.305 0.751 0.215 0.750 0.500
3 1/2
7/8 x 0.874 0.370 0.875 0.264 0.877 0.629

0.062
5/8 0.875 0.376 0.876 0.270 0.875 0.625
3 1/2
1 1/4 1.248 0.518 1.250 0.366 1.253 0.879

0.062
x 7/8 1.250 0.524 1.252 0.372 1.250 0.875
1 1/2 1.498 0.599 1.500 0.412 1.504 1.006

0.062
x 1 1.500 0.605 1.502 0.418 1.500 1.000
1x
3/4
0.437 0.186 0.438 0.135 0.440 0.315

0.020
0.438 0.192 0.439 0.141 0.438 0.312
0.999 0.441 1.000 0.318 1.003 0.754

0.062
1.000 0.447 1.001 0.324 1.000 0.750
Imperial Square
B.S.46 : PART 1 : 1958
Nominal
Shaft Diam
Key
Size
Dimensions (Inches)
Over
To
(incl.)
1/4
1/2
1/8 x 0.124 0.072 0.125 0.060 0.127

1/8 0.125 0.078 0.126 0.066 0.125
0.010
1/2
3/4
3/16
x
3/16
0.187 0.107 0.188 0.088 0.190

0.188 0.113 0.189 0.094 0.188
0.010
3/4
1/4 x 0.249 0.142 0.250 0.115 0.252

1/4 0.250 0.148 0.251 0.121 0.250
0.010
1 1/4
5/16
x
5/16
0.311 0.177 0.312 0.142 0.314

0.312 0.183 0.313 0.148 0.312
0.010
1 1/4 1 1/2
3/8 x 0.374 0.213 0.375 0.169 0.377

3/8 0.375 0.219 0.376 0.175 0.375
0.010
1 1/2 1 3/4
7/16
x
7/16
0.437 0.248 0.438 0.197 0.440

0.438 0.254 0.439 0.203 0.438
0.020
1 3/4
1/2 x 0.499 0.283 0.500 0.224 0.502

1/2 0.500 0.289 0.501 0.230 0.500
0.020
2 1/2
5/8 x 0.624 0.354 0.625 0.278 0.627

5/8 0.625 0.360 0.626 0.284 0.625
0.020
2 1/2
3/4 x 0.749 0.424 0.750 0.333 0.752

3/4 0.750 0.430 0.751 0.339 0.750
0.020
3 1/2
7/8 x 0.874 0.495 0.875 0.387 0.877

7/8 0.875 0.501 0.876 0.393 0.875
0.062
17/03/2010
Page 3 of 3
3 1/2
1x1
0.999 0.566 1.000 0.442 1.003

1.000 0.572 1.001 0.448 1.000
0.062
1 1/4
1.248 0.707 1.250 0.551 1.253
x1
1.250 0.713 1.252 0.557 1.250
1/4
0.062
1 1/2
1.498 0.848 1.500 0.661 1.504
x1
1.500 0.854 1.502 0.667 1.500
1/2
0.062
17/03/2010

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Transeals - Keyway Chart

The following tables show standard

28 x 27.948 10.0 27.974

32 x 31.938 11.0 31.969

36 x 35.938 12.0 35.969

40 x 39.938 13.0 39.969

45 x 44.938 15.0 44.969 10.4 45.000 25.000

50 x 49.938 17.0 49.969 11.4 50.000 28.000

Transeals - Keyway Chart

5/16 0.311 0.146 0.312 0.112 0.314 0.253

3/8 x 0.374 0.150 0.375 0.108 0.377 0.253

1/2 x 0.499 0.190 0.500 0.131 0.502 0.315

5/8 x 0.624 0.260 0.625 0.185 0.627 0.441

3/4 x 0.749 0.299 0.750 0.209 0.752 0.503

7/8 x 0.874 0.370 0.875 0.264 0.877 0.629

1 1/4 1.248 0.518 1.250 0.366 1.253 0.879

1 1/2 1.498 0.599 1.500 0.412 1.504 1.006

0.437 0.186 0.438 0.135 0.440 0.315

0.999 0.441 1.000 0.318 1.003 0.754

1/8 x 0.124 0.072 0.125 0.060 0.127

0.187 0.107 0.188 0.088 0.190

1/4 x 0.249 0.142 0.250 0.115 0.252

0.311 0.177 0.312 0.142 0.314

3/8 x 0.374 0.213 0.375 0.169 0.377

0.437 0.248 0.438 0.197 0.440

1/2 x 0.499 0.283 0.500 0.224 0.502

5/8 x 0.624 0.354 0.625 0.278 0.627

3/4 x 0.749 0.424 0.750 0.333 0.752

7/8 x 0.874 0.495 0.875 0.387 0.877

Transeals - Keyway Chart

0.999 0.566 1.000 0.442 1.003

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