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MORBARK 4600XL Wood Hog Horizontal Grinder

Horizontal Grinders

With a large hammermill and a 36″ (91.44 cm) tip swing, the Morbark 4600XL Wood Hog horizontal grinder offers unmatched performance in its class. Features include a 60″ x 46″ (152.4 cm x 116.84 cm) infeed opening for processing bulky material, 1050 HP (782 kW) engine, a pegged feed wheel to prevent wrapping, and rugged WHD-120 infeed chain to easily handle tough material.

Equipment Features

  • Morbark Integrated Control Systems (MICS) - Automatically adjusts feed rates and monitors pressures and feed wheel position to maximize production and engine efficiency.
  • Externally Adjustable Break-Away Torque Limiter - Flexible, easily adjustable torque limiter helps protect the driveline and hammermill for damage.
  • Feed System - Internal planetary drive with no chains and sprockets means lower maintenance, more torque and better durability.
  • Hammermill - Laser-cut upturn rotor, factory-balanced with forged hammers, offers unsurpassed durability and smooth operation.

Infeed opening: 60” x 46” (152.4 cm x 116.8 cm)

Variable speed infeed system consists of one 33” (83.82 cm) diameter top compression feed roll with internal drive and an 15’5” long x 60 3/8” (4.7 m x 153 cm) wide live floor equipped with four strands of WDH-120 chain in a staggered configuration with direct drive.


  • Electric power
  • 12- or 16-knife chipper drum assembly
  • Variety of grates sizes available
  • Hydraulic rod puller

36” x 61-3/8” (91.4 cm x 155.9 cm) hammermill system constructed of heavy-duty 25-½” (64.7 cm) diameter rotor, (17) 1-1/8” (44 cm) thick two-piece laser-cut rotor plates to ensure precision and enforce steel strength. The plates are keyed on an 8-3/8” (21.27 cm) diameter shaft with two 5-3/16” (13.17 cm) bearings and eight 2-¼” (5.7 cm) hammer retaining rods. Hammermill pattern consists of (18) 2” (5.08 cm) balanced forged steel heavy-duty hammers, (18) 3-1/16” (7.7 cm) wide double-edged replaceable inserts and 18 rakers.


Length (transport) wheeled: 42” (12.8 m)
Length (operating) wheeled: 63” (19.2 m)
Height wheeled: 13’3” (4.04 m)
Height (operating) wheeled: 16’9” (5.1 m)
Width wheeled: 10’11” (3.33 m)

Length (transport) tracked: 45” (13.72 m)
Length (operating) tracked: 61’10” (18.85 m)
Height tracked: 11’11” (3.63 m)
Height (operating) tracked: 16’4” (4.98 m)
Width tracked: 11’3” (3.43 m)


Gross weight wheeled: 75,660 lbs. (34,320 kg)
Axle weight: 51,600 lbs. (23,405 kg)
Tongue weight: 24,060 lbs. (10,915 kg)

Gross weight tracked: 88,640 lbs. (40,206 kg)


Engine: CAT
Horsepower: 1050 HP (783 kW)


Fuel capacity (tank) wheeled: 370 gallons (1,400 litres)
Hydraulic oil capacity wheeled: 187 gallons (708 litres)

Fuel capacity (tank) tracked: 340 gallons (1,287 litres)
Hydraulic oil capacity tracked: 267 gallons (1,010 litres)


Screen Area: 4,414 sq in (28,477 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


Discharge system consists of a hydraulically driven, horizontal 48” wide x 22” (122 cm x 6.7 m) long aggregate belly belt conveyor discharging onto a 36” (91.44 cm) wide stacking conveyor with hydraulic fold for transport.


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MORBARK 4600XL Wood Hog Horizontal Grinder

Horizontal Grinders

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