Motorized Roller Spool Flange
Belts that run on bare
lineshafts (line-shafts) usually “walk and wander”, i.e., screw
down the shaft and snap back repeatedly. This causes high frequency vibrations
that stretch and abrade
belts, greatly reducing belt life. This is one reason why lineshaft spools
are used.
Spool flanges prevent walking and
thereby increase belt life. Only one flange per belt is needed because
belts walk in only one direction – the direction of conveying motion,
i.e. downstream.
|
Belts vibrating on bare line shaft |
| Dura-Belt Urethane Spool Flanges
are designed for use on powered (motorized) rollers or other lineshafts
that are 1.9” or larger in diameter. Our urethane’s supreme elasticity
holds them firmly in place. They stick so tightly to the shaft that
RAVE Ultra-Hold hair spray is recommended to facilitate installation. When
dry, it acts as a glue that gives added protection against dislodgement.
If still more hold is desired, a drop of Loctite 480 will lock them
in place, but this is hardly ever needed. Our spool flanges are tapered
so that their outside edges do not rub against the belts, and they
rotate with the belts so no abrasion occurs. They also provide a little
extra drive. Mount them about 5/8” (16mm) from a line perpendicular
to the powered roller and through the driven roller’s axis as shown,
or so the belt does not distort when touching the flange nor rub
on the outside edge of the flange. The outside edge must
not touch the belt because it is moving faster than the
belt, so it would abrade the belt if it rubbed against it. |
Motorized Roller used as a lineshaft
with Urethane Spool Flange |
For the best in powered (motorized) roller spool flanges, insist on DuraBelt.
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