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.

MICS System 2017

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″ (14.68 m)
Length (transport): 28’2″ (8.58 m)
Height (transport): 12’11” (3.98 m)
Width: 8’6″ (2.59 m)

Gross weight:  28,740 lbs. (13,063 kg)
Axle weight: 20,440 lbs. (9,271 kg)
Tongue weight: 8,300 lbs. (3,764 kg)

Engine: CAT
Horsepower: 350 HP to 580 HP (260 kW to 432 kW)

Fuel capacity: 160 gallons (605 litres)
Hydraulic oil capacity: 80 gallons (302 litres)

Screen Area: 1,900 sq in (12,258 sq cm)

Towing Arrangement: Pintle
Brakes: Air

Magnetized end pulley

11-HP (8.2 kW) air compressor

Break-away torque limiter

Dust suppression system


10’6″ (3.2 m) diameter tub opening, 8′ (2.44 m) diameter at inside base, 50″ (127 cm) deep walls constructed of 1/4″ (6.35 mm) reinforced steel plate, and floor constructed of 3/8″ (9.5 mm) 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″ (62.32 cm x 116.84 cm) hammermill system constructed of a heavy-duty 16″ (40.64 cm) diameter laser cut rotor, (19) 1-1/8″ (2.86 cm) thick 2-piece laser-cut rotor plates to ensure precision and enforce steel strength. The plates are keyed on a 4-1/2″ (11.43 cm) diameter rotor shaft with 3-7/16″ (8.73 cm) bearings direct driven at engine RPM and (8) 1-1/4″ (3.17 cm) hammer retaining rods. Complete with (36) 1-1/4″ (3.17 cm) balanced forged hard-surfaced fixed hammers and (36) 2″ (5.08 cm) wide replaceable inserts. 3/4″ (1.9 cm) thick heavy-duty screens. Two 12″ (30.48 cm) diameter augers discharge onto a 28″ belt conveyor. Hydraulic fold for transport.


  • Electric power
  • Variety of screen sizes
  • Pintle hitch towing arrangement with dual axles
  • Dual axles with fifth wheel towing arrangement
  • Track undercarriage
Specifications may vary with equipment options.

The Morbark Wearwolf™ Insert rips through palm, hardwood, frozen and soft woods, anything you can feed it.

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