1000 Tub Grinder

This small but powerful tub grinder is perfect for lower volume applications for land clearing, wood waste recycling, municipalities and compost facilities. Like Morbark’s larger grinders, the 1000 Tub Grinder includes the Morbark Integrated Control System (MICS), which allows you to monitor key systems and adjust feed rates. Equipped with a proven drive line protection system with torque limiter, this model also boasts hydraulic augers to quickly remove product and prevent plugging, a pinned rotor system and a variety of heavy-duty grates to produce different end products, and optional hinged tub flares for use during transportation.

Morbark Integrated Control Systems (MICS)

The ultimate diagnostic system; monitors hydraulic pressures, temperatures, clutch systems, and engine efficiency to maximize performance.

Torque Limiter

Full breakaway torque limiter protects the engine and clutch against shock and overload without stalling the engine.

Hydraulic Augers

Quickly remove product from beneath the mill. During material surges, pressure sensors on the auger system automatically slow tub rotation to prevent plugging.

Tub Tilt Feature

Tub Tilt

Provides easy access to grates and anvil for routine maintenance.


Length (operating): 48’2″
Length (transport): 28’2″
Height (transport): 12’11”
Width: 8’6″

Gross weight:  28,740 lbs.
Axle weight: 20,440 lbs.
Tongue weight: 8,300 lbs.

Engine: CAT, Cummins, or John Deere
Horsepower: 350 HP to 540 HP

Fuel capacity: 160 gallons
Hydraulic oil capacity: 80 gallons
Towing Arrangement: Pintle
Brakes: Air


10’6″ diameter tub opening, 8′ diameter at inside base, 50″ deep walls constructed of 1/4″ reinforced steel plate, and floor constructed of 3/8″ thick wear-resistant steel

Tub supported by 10 rubber guide rolls

Full hydraulic tilt tub for easy access to hammermill

Hydraulically powered variable RPM forward and reverse tub control with electronic sensor drive

Tub cover for debris containment

6-function wireless remote control

Front hydraulic stabilizers

Hammermill and Screens

24-1/2″ x 46″ hammermill system constructed of a heavy-duty 16″ diameter laser cut rotor, (19) 1-1/8″ thick 2-piece laser-cut rotor plates to ensure precision and enforce steel strength. The plates are keyed on a 4-1/2″ diameter rotor shaft with 3-7/16″ bearings direct driven at engine RPM and (8) 1-1/4″ hammer retaining rods. Complete with (36) 1-1/4″ balanced forged hard-surfaced fixed hammers and (36) 2″ wide replaceable inserts. 3/4″ thick heavy-duty screens. Two 12″ diameter augers discharge onto a 28″ belt conveyor. Hydraulic fold for transport.


  • Electric power
  • Variety of screen sizes
  • Magnetized end pulley
  • Radial stacking conveyor
  • Air compressor
  • Dust suppression system
  • Fifth wheel towing arrangement
  • Break-away torque limiter
  • Super 1000 version, which includes tandem axle with fifth wheel towing arrangement and a 12′ tub
Specifications may vary with equipment options.
Morbark AR450 Grates

Morbark AR450 Grates:
High Performance. Higher Value.

Morbark AR450 Grates give you:

  • Morbark Quality
  • Longer Life
  • Greater Value
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