Lister 5/1 Diesel

Key Dimensions & Proportions

Based on UK Sizes in BS 46: Pt1 1929


BS Plain Rectangular Parallel Keys (Taper 1 in 100) Keyways and Bars - Part 1 of Table 2

Size Shaft Diameters Key Depth of Immersion
of key on Centreline (Nom)
Keyway
Over Up to &
Including
Nominal &
Minimum
Width 'W'
Nominal &
Minimum
Thickness 'T'
In Shaft In Hub Max Width
in Shaft & Hub
Min Depth
on Centreline
In Shaft In Hub
3/32" 3/16" 1/4" 3/32" 3/32" 0.0574" 0.0364" 0.0938" 0.0584" 0.0374"
1/8" 1/4" 3/8" 1/8" 1/8" 0.0756" 0.0494" 0.1250" 0.0766" 0.0504"
5/32" 3/8" 1/2" 5/32" 5/32" 0.0925" 0.0638" 0.1563" 0.0935" 0.0648"
3/16" 1/2" 3/4" 3/16" 5/32" 0.0925" 0.0638" 0.1875" 0.0935" 0.0648"
1/4" 3/4" 1" 1/4" 3/16" 0.1120" 0.0755" 0.250" 0.1130" 0.0765"
5/16" 1" 1-1/4" 5/16" 7/32" 0.1315" 0.0873" 0.3125" 0.1325" 0.0883"
3/8" 1-1/4" 1-1/2" 3/8" 1/4" 0.1511" 0.0989" 0.3750" 0.1521" 0.0999"
7/16" 1-1/2" 1-3/4" 7/16" 9/32" 0.1706" 0.1107" 0.4375" 0.1721" 0.1122"
1/2" 1-3/4" 2" 1/2" 11/32" 0.2058" 0.1380" 0.5000" 0.2073" 0.1395"
9/16" 2" 2-1/4" 9/16" 1/2" 0.2254" 0.1496" 0.5625" 0.2269" 0.1511"
5/8" 2-1/4" 2-1/2" 5/8" 13/32" 0.2450" 0.1613" 0.6250" 0.2465" 0.1628"
11/16" 2-1/2" 2-3/4" 11/16" 15/32" 0.2802" 0.1886" 0.6875" 0.2822" 0.1906"
3/4" 2-3/4" 3" 3/4" 1/2" 0.2998" 0.2002" 0.7500" 0.3018" 0.2022"
7/8" 3" 3-1/2" 7/8" 5/8" 0.3726" 0.2524" 0.8750" 0.3746" 0.2544"
1" 3-1/2" 4" 1" 11/16" 0.4117" 0.2758" 1" 0.4137" 0.2778"
1-1/8" 4" 4-1/2" 1-1/8" 3/4" 0.4508" 0.2992" 1.1250" 0.4528" 0.3012"
1-1/4" 4-1/2" 5" 1-1/4" 13/16" 0.4900" 0.3225 1.2500" 0.4920" 0.3245"
1-3/8" 5" 5-1/2" 1-3/8" 15/16" 0.5604" 0.3771" 1.3750" 0.5629" 0.3796"
1-1/2" 5-1/2" 6" 1-1/2" 1" 0.5996" 0.4004" 1.5000" 0.6021" 0.4029"
1-5/8" 6" 6-1/2" 1-5/8" 1-1/16" 0.6388" 0.4237" 1.6250" 0.6413" 0.4262"
1-3/4" 6-1/2" 7" 1-3/4" 1-3/16" 0.7092" 0.4783" 1.750" 0.7117" 0.4808"
1-7/8" 7" 7-1/2" 1-7/8" 1-1/4" 0.7483" 0.5017" 1.8750" 0.7513" 0.5047"
2" 7-1/2" 8" 2" 1-3/8" 0.8187" 0.5563" 2" 0.8217" 0.5593"
2-1/4" 8" 9" 2-1/4" 1-1/2" 0.9016" 0.5894" 2.250" 0.9046" 0.6014"
2-1/2" 9" 10" 2-1/2" 1-5/8" 0.9799" 0.6451" 2.5000" 0.9829" 0.6481"
2-3/4" 10" 11" 2-3/4" 1-7/8" 1.1208" 0.7542" 2.750" 1.1248" 0.7582"
3" 11" 12" 3" 2" 1.1991" 0.8009" 3.000" 1.2031" 0.8049"


MainMechanical Tables Part 2 of Key Table