Why the General
all other shaft attachments:
The Polygon has a greater capacity for torque than any other shaft
attachment. The effective shaft strength is not reduced by cut out splines or keyways; the
load is distributed over a generous area. In many cases, the shaft diameter can even be
Polygon contours fit better initially. Interchangeable
mating surfaces are finished to within precision grinding
tolerances, for sliding, tight, press, or tapered-fits. Because
point loading, common to splines and keys, is eliminated,
freedom from backlash is maintained for longer periods. The
Polygon connection is fully self-centering;
no expanders or other auxiliary devices are needed to establish
or maintain fit.
Effective load distribution virtually eliminates point contact, minimizing stress fatigue
and distortion, and markedly extending useful service life. The shaft contour is developed
on hardened stock, effectively preventing distortion from subsequent heat treatment, and
permitting optimum conditioning of the shaft for bearings and other machine components.
A shorter shaft connection can often be used and valuable space saved, because
shear loading, as with splines and keys, is eliminated.
The attachment of the component to the shaft is much
more simplified. Slipping it in place and applying a snap
ring is often all that is required. Alignment of gear teeth
or cams is positive and fool-proof.
Significant savings in overall cost are assured. The Polygon system
itself usually costs no more than splined components, and assembly is potentially much
less expensive. Further savings are possible because of the higher load rating of the Polygon
System. Of probable greater economic significance is the longer service life to
be expected of the Polygon System. Machine downtime for emergency repair
can be paralyzing. General Polygon offers you the
opportunity to minimize these losses.