Regular Spools float
on a lineshaft (line shaft) and function as clutches that will slip
when boxes jam or accumulate, thus preventing belts from abrading.
They also provide a safer working environment, allowing rollers
to stop if hair or hands get caught in rollers. Spools come in two sizes:
Standard bore -- fits both 1" and 25mm shafts.
Large bore -- fits both 1-7/16" and 36mm shafts.
Speed-up spools increase
roller speed by 44%.
Keyed spools will
not slip, so use only in sections where there will be no accumulation or
jams. Designed for curves, inclines,
or where greater drive is needed.
Split spools can
be installed without disassembling the shaft. Our
split spools are high precision & reasonably priced. Installs in seconds.
Greatly reduces downtime. Regular size is red. Speed-up is green. For more
C-Clips (Shaft Collars,
on shaft to keep spools in place. New stronger nylon material grips harder
-- helps prevent slippage.
together two or more spools on 3" (76mm) centers to provide more drive
power. Eliminates need for keyed spools on straight sections.
How to prevent c-clips from slipping:
If spools are allowed to "float" on
the shaft, they will screw themselves downstream as soon as
the shaft starts turning. This will cause the belts to stretch
and rub against the outside edges of the spool flanges. Since
the edges are moving faster than
the belts, the belts will abrade. To prevent such belt wear,
the center of the spool must be held directly under the center
of the roller groove. Normally, a single c-clip on each side
of the spool will hold it in position. However,
under certain circumstances, c-clips may slip, allowing spools
to screw down the shaft and cause premature belt wear. This
may happen when:
- High-tension belts exert extra pressure on spools and c-clips.
- The shaft is slightly undersized, e.g., 25mm.
You can prevent c-clips from slipping by placing
two c-clips on each side of the spools. Actually, if the conveyor
always moves in the same direction, c-clips
are not needed on the upstream side because spools do not
Click here to Download all the Spool drawings
Or select a drawing below to view it
Under certain circumstances
two c-clips on downstream
side of spools may be needed
to prevent c-clips from slipping
Connector locks together
spools on 3" centers for
greater drive power