Sprocket Standard Bosses Drawing
BORE A B GRUBSCREW
OVER KEY
(If Requested)
INCH MM INCH MM MM
1.00 25.4 2.00 50.8 20 M6
1.50 38.1 2.50 63.5 20 M8
2.00 50.8 3.50 88.9 25 M10
2.50 63.5 4.00 101.6 25 M12
3.00 76.2 4.50 114.3 25 M12
3.50 88.9 5.50 139.7 25 M12
4.00 101.6 6.00 152.4 25 M12
5.00 127 7.50 190.5 25 M12
6.00 152.4 9.00 228.6 25 M12
7.00 177.8 10.50 266.7 30 M16
8.00 203.2 11.50 292.1 30 M16
9.00 228.6 13.00 330.2 30 M16

Note:
For intermediate shaft sizes - use the next largest Bore size unless otherwise stated - Bosses will be keywayed for rectangular Gib Head taper keys to B.S. 46 Part 1 - 1958 Table 3.
Boss faces will be machined as necessary.
Key Drive direction will be as shown unless otherwise specified.

Style 'A'
Sprocket Style A
Style 'B'
Sprocket Style B
Style 'C'
Sprocket Style C
Style 'D'
Sprocket Style D
Style 'H'
Sprocket Style H
Style 'I'
Sprocket Style I

Sprockets Enquiry Form

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