Chapter 2: Functional Description 12 of 37
Chapter 2: Functional Description
2-1 Models Covered in This Manual
This manual provides the necessary instructions for the installation, setup and maintenance of
our 20”x62” and 20”x72” models
2-2 General Description
This granulator is a rugged, rotary-cutting machine specifically designed to cut, chip, and,
granulate the toughest plastic materials with a minimum expenditure of horsepower.
B Series granulators feature a massively built, low RPM high inertia rotor with chevron
knives. It accepts large parts and assures long, trouble-free service
The hopper is designed to remain stationary to allow for a smaller footprint and the screen to
pull out from the side for quick access into the cutting chamber.
These granulators are ideal for pipe, purgings, X-ray film, psi-consumer baled bottles, film
and fibers.
2-3 Typical Features and Components
Hopper
The hopper is an upright enclosure bolted to the top of the cutting chamber. The hopper is
designed to facilitate feeding of material to the rotary knives and to prevent chips thrown
from the cutting chamber from reaching the operator.
Cutting Chamber
The cutting chamber is a rectangular enclosure comprising the main frame, the bed knives,
the bed knife shields, a balanced rotor and a screen.
The main frame of the cutting chamber carries the bed knives and the bed knife shields. The
H Series, helical hog models do not have downstroke bed knife shields. The downstroke
bed knife shield is adjustable.
The screen is supported in position below rotor and acts as a separating barrier to the
granulated material, retaining the material in the cutting chamber until the particle size is
such that it will pass through the screen holes.
The rotor carries the rotor knives. The rotation of the rotor produces a cutting action between
the rotor and the stationary bed knives, thus reducing the material size.
Drive System
The rotor is indirectly driven by the motor through v-belts. The motor shaft pulley, v-belts,
and the rotor shaft pulley are shielded by safety guards or sound enclosure.
The motor is mounted on an adjustable sliding base, which is mounted at the left end of the
granulator.
