1) Maximum bores stated above are for
uniformly loaded drives only using
rectangular parallel keyways to BS4235
Part 1 1972 or DIN 6885 Sheet 1-1968.
Taper or square keys should not be used
with a boss to bore ratio of less than 1.5.

2) Refer to Bibby Transmissions for speeds
higher than those shown and for limited
end float or special designs.

3) For repetitive high peak torque
applications or selections that use SN
factors less than 1.0, two keyways may
be necessary–check key stress.

4) All dimensions are subject to
confirmation.