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SECTION VII
COMPONENT SYSTEM DESCRIPTIONS
A. BASKET (TUMBLER) DRIVE SYSTEM
The basket (tumbler) is supported and driven by four (4) 11-inch (27.94 cm) diameter drive wheels. Two (2) of
these wheels are attached to a 1-1/2” (3.81 cm) diameter idler shaft, while the other two (2) are attached to a
1-1/2” (3.81 cm) diameter drive shaft. Each of the wheels is fastened to the shafts by a taper lock bushing. The
taper lock is made up of three (3) pieces: an inner collar, an outer sleeve, and a key. The inner and outer elements
have matching opposing tapers. As a result, when the bolts are tightened, the taper lock contracts onto the shaft
and expands into the drive wheel hub locking the wheel onto the shaft.
The idler shaft and drive shaft are each supported by two (2) 1-1/2” (3.81 cm) diameter pillow block bearings.
These bearings sit on slotted support channels and can be moved inward or outward by the adjustment bolts to
raise or lower the basket (tumbler).
The drive system consists of a shaft mounted gear reducer, two (2) V-belts, and a 5 HP (3.73 kw) drive motor.
Belt tension can be adjusted by tightening or loosening the gear reducer turnbuckle.
BASKET (TUMBLER) DRIVE SYSTEM