6600 Wood Hog Horizontal Grinder

Our 6600 Wood Hog horizontal grinder is an aggressive, productive grinder ideal for processing wood waste, land clearing and storm debris into saleable products. The 6600 Wood Hog’s 66″ x 50″ (167.64 cm x 127 cm) infeed opening processes large material with ease, and engine options up to 1200 HP (894 kW) give you plenty of power.

MICS System 2017

Morbark Integrated Control Systems (MICS)

Automatically adjusts feed rates and monitors pressures and feed wheel position to maximize production and engine efficiency.


Laser-cut upturn rotor, factory balanced with forged hammers, offers unsurpassed durability and smooth operation.

Externally Adjustable Break-Away Torque Limiter: Optional

Flexible, easily adjustable torque limiter helps protect the driveline and hammermill for damage.

Grate Access

Hydraulic hinged door allows quick and easy access for changing grates.


Length (transport) wheeled: 44′ 11″ (13.69 m)
Length (operating) wheeled: 68’10” (20.98 m)
Height (transport) wheeled: 13’6″ (4.11 m)
Height (operating) wheeled: 19’3″ (5.87 m)
Width wheeled: 11’10” (3.61 m)

Length (transport) tracked: 44’9″ (13.64 m)
Length (operating) tracked: 67’1″ (20.45 m)
Height (transport) tracked: 11’11” (3.63 m)
Height (operating) tracked: 18’6″ (5.69 m)
Width tracked: 11’11” (3.63 m)

Gross weight wheeled: 91,440 lbs. (41,476 kg)
Axle weight: 59,400 lbs. (26,945 kg)
Tongue weight: 32,000 lbs. (14,515 kg)

Gross weight tracked: 109,120 lbs. (49,500 kg)

Engine: CAT
Horsepower:  1125 HP to 1200 HP (838 kW to 894 kW)

Fuel capacity (tank) wheeled: 390 gallons (1,478 litres)
Hydraulic oil capacity wheeled: 335 gallons (1,268 litres)

Fuel capacity (tank) tracked: 390 gallons (1,478 litres)
Hydraulic oil capacity tracked: 335 gallons (1,268 litres)

Screen Area: 5,661 sq in (36,522 sq cm)

Brakes: air

Towing arrangement: fifth wheel

Dust suppression system

Hydraulically operated debris containment door

Remote control with tethered back-up system

Automatic reversing fan system

Externally adjustable break-away torque limiter

Magnetized end pulley with collecting slide tray for ferrous metal removal

11-HP (8.2 kW) air compressor with lockable enclosure

Infeed System

Infeed opening: 66″ x 50″ (167 cm x 127 cm)

Variable speed infeed system consists of one 36″ (91.44 cm) diameter top compression feed roll with internal drive and a 17’6″ long x 64″ (5.3 m x 162 cm) wide live floor equipped with five strands of WDH-120 chain in a staggered configuration.

Hammermill and Grates

42″ x 66-5/8″ (106.68 cm x 169.2 cm) hammermill system constructed of heavy-duty 28″ (71 cm) diameter rotor, (18) 1-3/8″ (3.5 cm) thick two-piece laser-cut rotor plates to ensure precision and enforce steel strength. The plates are keyed on a 9″ (22.9 cm) diameter shaft with 5-3/16″ (13.18 cm) bearings and eight 2-½” (6.35 cm) hammer retaining rods. Hammermill pattern has (18) 2-¼” (5.7 cm) balanced forged steel hammers, (18) 3-5/8″ (47.3 cm) wide double-edged replaceable inserts and 18 forged rakers.

Discharge System

Discharge system consists of a hydraulically driven, horizontal 48″ wide x 19′ (121.92 cm x 5.79 m) long aggregate belly belt conveyor discharging onto a 40″ x 31′ (101.6 cm x 9.45 m) stacking conveyor with hydraulic fold for transport.


  • Electric power
  • Variety of hammermill patterns
  • 14-knife chipper drum assembly
  • Variety of grates sizes available
  • Hydraulic rod puller
  • 330L Caterpillar Undercarriage
Specifications may vary with equipment options.