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Boston Gear Centric® Centrifugal Clutch for Mine Feeder/Breaker
A U.S. open pit coal mine operator needed a replacement centrifugal clutch
for its primary feeder breaker. The feeding and crushing machine utilizes
a “flight chain” that moves the coal from a large tipped hopper into a rotating
breaker head that crushes the coal into various sizes. Positioned between the
electric motor and gearbox on the rotating head drivetrain, the clutch allows for
some slippage to protect the drivetrain against the damaging shock loads that can
occur when large coal pieces get temporarily jammed.
To meet the challenging application requirement, Boston Gear recommended
a 19 in. diameter Centric Centrifugal Clutch (CCC). The clutch is designed to
automatically engage and disengage at customer specified RPMs. The clutch also
provides shock load protection during machine start-up.
Highlights
- Protection against shock
loads
- Automatic engagement
and disengagement
- Allows occasional
slippage
- 100% efficient at
running speeds