Granulators

ROTOGRAN granulators are deliberately built over-sized for maximum performance and many years of trouble-free operation.

Compare any other granulator with a ROTOGRAN and the difference becomes obvious. Not only from the point of view of fabrication, but also because features which other manufacturers consider top-of-the-line, we consider standard. We never compromise on quality, and it is our constant source of pride that we remain in the forefront of granulator production in North America.

ROTOGRAN granulators are known for their superior design, efficiency, durability, and competitive pricing. A unique feature of our granulator is quick and easy access to the cutting chamber (for cleaning or blade changing).

Standard Features of our Granulators Include:

Cutting Chamber

  • Heavy duty one-piece weldment, fabricated from A-36 ground steel plate. It is rigid, smooth and easy to clean.
  • Tangential feed design assures positive feeding of the material and maximizes throughput and helps prevent jamming.
  • Also available, non-tangential feed, stainless steel, abrasion resistant, and water cooled cutting chambers.
  • Cutting chamber is solidly welded on frame
  • Swing-down heavy duty removable screen cradle (Hydraulically operated available on larger units).

Rotor

  • Heavy-duty, SAE-1045 steel.
  • Double scissor cutting action on rotor and bed blades assures positive cutting with minimum fines, and lower torque requirements.
  • Micro adjustable bed blades are easily accessible from the front of the granulator.
  • All ROTOGRAN blades are made from fully-hardened and precision ground D2 tool steel and cryogenically treated as an extension of the heat treat process.
  • Rotor is offset in chamber for minimum fly-back and positive cutting of large or bulky items.
  • Open rotor design allows more air flow through the cutting chamber for cooler operation and increased throughput.
  • Alternative rotor designs are available on request.
  • Our heavy duty, self-aligning flanged cartridge bearings easily absorb all grinding shock.

Flywheel

  • Solid-steel construction minimizes motor and rotor abuse, reduces horsepower requirements, and electrical power costs.

Base

  • Base frame is constructed from heavy duty structural sections, solidly welded to cutting chamber for vibration free operation.
  • Heavy-duty steel casters on most smaller (2 rigid and 2 swivel), larger models on machinery mount.
  • Acoustically-insulated panels, for maximum sound absorption.

Hopper

  • Heavy-gauge steel. double wall construction.
  • Conveyor or manual loading design is standard.
  • Hopper is mounted on single point pivots to allow full access to cutting chamber (Hydraulically operated available on larger units).
  • Double bulb neoprene extrusion on hopper's base helps assure complete sealing between hopper and cutting chamber (most machines).

Evacuation Bin

  • Venturi style evacuation bin is constructed from heavy gauge steel with provisions for a blower/cyclone system connection.
  • All granulated material is confined to the bin.

Electrical

  • Nema rated across the line motor starter (Soft start and central control panels available).
  • Strategically located electromechanical safety devices will automatically shut off power if an attempt is made to gain access to the cutting chamber or screen.

Blower/Cyclone Systems

ROTOGRAN manufactures blower/cyclone systems, designed for continuous and efficient evacuation of granules from the granulator bin. Each system can be supplied mounted on a base to form an independent unit, or integrated with the granulator.

The blower impeller is mounted directly on the motor shaft, eliminating the need for drive belts. All impellers are precision-machined and dynamically balanced. Stainless steel and abrasion resistant impeller and housing also available. Motor sizes range from 1.5 to 15 hp., and are electrically interconnected to the starters. Standard voltages are 575 or 460/3/60. Other voltages available on request.

Belt Conveyors

ROTOGRAN custom manufactures a variety of belt conveyors to suit your specific requirements. All conveyors are solidly constructed from heavy-gauge steel, and come complete with ROTOGRAN's TRU-GUIDE belt tracking system, thus, elimination belt wandering, and costly maintenance.