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© 2004 by RULMECA Corporation |
UK COAL Cuts Downtime Motorized Pulley Powers Kellingley Colliery Conveyor
 Faced
with an aging conveyor system, frequent stoppages, and a
£30,000 ($56,700) annual conveyor maintenance budget, UK
Coal’s Engineering Manager, Steve Pringle, and Mine Surface Manager, Mick
Barry, decided
to improve the 500 tph conveyor drive reliability while decreasing maintenance
costs.
They replaced the problem-prone exposed dual motor/gearbox center drive
arrangement with a 100 HP (75 kW) Rulmeca Motorized Pulley, installed at the
discharge end.
Photo Caption: Elevated conveyor discharges
tailings at 500 tph.
 The
31.5" (800 mm) diameter Model 800H Motorized Pulley was installed in just ONE
MORNING because the motor and gearbox are enclosed within the pulley shell and
it was not necessary to revise to the conveyor support structure.
Photo Caption: Rulmeca Motorized Pulley drives
belt at discharge end.
Controlled by a variable frequency drive on a 550v/3phase/50 Hz power supply,
the Motorized Pulley saves
£6,000 ($11,340) per year in reduced
electrical power consumption thanks to its higher overall efficiency.
 Mr.
Pringle said “We expect our first year’s performance to be fairly typical because
the Motorized Pulley’s motor and gearbox are automatically self-lubricated
within the hermetically-sealed pulley shell.” Regreasable labyrinth seals
protect the internal components from water and dust ingress.
Photo Caption: Close-up of 100 HP (75 kW) Rulmeca
Motorized Pulley prior to installation.
Now the power plant fed by Kellingley Colliery need not rely on expensive oil
during tailings belt stoppages because they’ve been eliminated.
For more information contact…
Rulmeca Corporation
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