Lister 5/1 Diesel

Key Dimensions & Proportions

Based on UK Sizes in BS 46: Pt1 1929


BS Plain Rectangular Taper Keys (Taper 1 in 100) Keyways and Bars - Part 1 of Table 1

Size Shaft Dia's Key Keyway
Over Up to &
Including
Nominal SizeMin Width
'W'
Min Thickness
at large end
Max Width
in Shaft & Hub
Min Depth
on Centreline
Width Thickness In Shaft In Hub
at deep end
3/32" 3/16" 1/4"3/32" 3/32"0.0938" 0.097" 0.0938" 0.0584" 0.0354"
1/8"1/4" 3/8" 1/8" 1/8" 0.125" 0.129" 0.125" 0.0766" 0.0474"
5/32" 3/8" 1/2"5/32" 5/32" 0.1563" 0.160" 0.1563" 0.095" 0.0618"
3/16"1/2" 3/4" 3/16" 5/32" 0.1875" 0.160" 0.1875" 0.0935" 0.0618"
1/4" 3/4" 1" 1/4" 3/16" 0.250" 0.191" 0.250" 0.1130" 0.0725"
5/16" 1" 1-1/4" 5/16" 7/32" 0.3125" 0.222" 0.3125"0.1325" 0.0843"
3/8" 1-1/4" 1-1/2" 3/8" 1/4" 0.3750" 0.254" 0.3750" 0.1521" 0.0959"
7/16" 1-1/2" 1-3/4" 7/16" 9/32" 0.4375" 0.286" 0.4375" 0.1721" 0.1082"
1/2" 1-3/4" 2" 1/2" 11/32" 0.500" 0.348" 0.500" 0.2073" 0.1355"
9/16" 2" 2-1/4" 9/16" 3/8" 0.5625" 0.380" 0.5625"0.2269" 0.1471"
5/8" 2-1/4" 2-1/2" 5/8" 13/32" 0.6250" 0.411" 0.6250" 0.2465" 0.1588"
11/16" 2-1/2" 2-3/4" 11/16" 15/32" 0.6875" 0.475" 0.6875" 0.2822" 0.1866"
3/4" 2-3/4" 3" 3/4" 0.5" 0.750" 0.507" 0.750" 0.3018" 0.1992"
7/8" 3" 3-1/2" 7/8" 5/8" 0.8750" 0.632" 0.8750" 0.3746" 0.2504"
1" 3-1/2" 4" 1" 11/16" 1" 0.694" 1" 0.4137" 0.2738"
1-1/8" 4" 4-1/8" 1-1/8" 3/4" 1.125" 0.757" 1.125" 0.4528" 0.2962"
1-1/4" 4-1/2" 5" 1-1/4" 13/16"1.25" 0.819" 1.25"0.4920" 0.3195"
1-3/8" 5" 5-1/2" 1-3/8" 15/16" 1.375" 0.945" 1.3750" 0.5629" 0.3746"
1-1/2"5-1/2" 6" 1-1/2" 1" 1.500"1.008" 1.500" 0.6021" 0.3979"
1-5/8"6" 6-1/2" 1-5/8"1-1/16" 1.625" 1.070" 1.625" 0.6413" 0.4212"
1-3/4" 6-1/2" 7" 1-3/4" 1-3/16" 1.750" 1.195" 1.750" 0.7117 0.4758"
1-7/8" 7" 7-1/2" 1-7/8" 1-1/4" 1.875" 1.260"1.8750" 0.7513" 0.4997"
2" 7-1/2" 8" 2" 1-3/8" 2.000" 1.385" 2.000" 0.8217" 0.5543"
2-1/4" 8" 9" 2-1/4"1-1/2" 2.25" 1.510" 2.250" 0.9046" 0.5964"
2-1/2" 9" 10" 2.50" 1.625" 2.500" 1.635" 2.500" 0.9829" 0.6431"
2-3/4" 10" 11" 2-3/4"1-7/8" 2.750" 1.887" 2.750" 1.1248" 0.7532"
3" 11" 12" 3" 2" 3.000" 2.012" 3.000" 1.2031" 0.7999"


MainMechanical Tables Part 2 of Key Table