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L. TUMBLER (Basket) SYSTEM
1. Tumbler (Basket) Drive System
The tumbler (basket) is supported and driven by four (4) 11-inch (27.94 cm) diameter drive wheel assemblies.
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 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. This results in raising or lowering the tumbler (basket).
The drive system consists of a shaft mounted gear reducer, two (2) V-belts, and a 3 HP (2.24 kw) drive
motor. Belt tension can be adjusted by tightening or loosening the gear reducer turnbuckle.
To keep the tumbler (basket) in the middle of the dryer a series of retaining wheels are used in the front and
rear of the dryer. The retaining wheels run along the vertical edge of the tumbler (basket) rings. These
keep the tumbler (basket) from rubbing on the front and rear panels of the dryer.