- Model 40/36 - Whole Tree Drum Chipper



The Morbark 40/36 Whole Tree Drum Chipper is a compact, affordable, productive drum chipper designed with the biomass industry in mind. Equipped with the same internal drive perfected on Morbark horizontal grinders, along with an extra wide feed opening, the 40/36 aggressively feeds brushy tops and limbs, quickly and effortlessly filling a chip van to maximum legal load capacity. Morbark’s Advantage 3 Drum decreases downtime while providing higher-quality chips. The feed system is more efficient due to a staggered knife configuration and contains fewer moving parts, reducing maintenance. With low fuel consumption per ton produced, this unit is economical.  At 8’6″ wide this compact unit is easily transportable and requires no permits to move.

Morbark Integrated Control Systems (MICS)
Automatically adjusts feed rates and monitors pressures and feed wheel position to maximize production and engine efficiency.

The Advantage 3 drum creates more uniform chips, and reduces operating and maintenance costs.

Directional flow discharge chute is hydraulically adjustable by remote control for maximum chip loads.

Infeed System
Aggressive live floor and large top feedwheel ensure positive feed of brushy tops and limbs.

Operator’s Cab Option
Cab hydraulically raises into operating position and lowers for transport position. Easy access in either position.


Length NCL: 36’6″
Height NCL: 11’7″
Width NCL: 8’6″

Length NCL Track: 32’10”
Height NCL Track: 11’10”
Width NCL Track: 11’6″

Length WCL Track: 32’10”
Height WCL Track: 11’11”
Width WCL Track: 11’6″

Gross weight NCL: 42,380 lbs.
Axle weight NCL: 24,900 lbs.
Tongue weight NCL: 17,480 lbs.

Gross weight NCL Track: 51,840 lbs.
Gross weight WCL Track: 65,860 lbs.

Engine: CAT, Cummins or John Deere
Horsepower: 600 HP to 800 HP

Fuel capacity (tank): 300 gallons
Hydraulic oil capacity: 187 gallons

Chipping capacity: 23″

Brakes: air

Towing arrangement: fifth wheel

Dust suppression system

Hydraulically operated debris containment door

Infeed System

Infeed opening: 40″ x 39″

Infeed System consists of one 30″ diameter top compression feed roll with internal drive, a 14″ diameter bottom feed wheel and a 40″ wide x 12’6″ long live floor equipped with three strands of WDH-120 chain in a staggered configuration.

Chipper Assembly

Drum diameter:  36″
Drum width: 43 ½”
Chipper knives: (8) 11″ x 7 5/16″ x ¾” thick
Counter knives: (8) 11″ x 6 3/8″ x ½” thick
Knives and Counter knives are Babbitt-style and made of A-8 modified steel
Drum speed: 968 RPM
Feed drive: Hydraulic

Discharge System

Straight discharge chute includes hydraulically operated chip deflect with vertical and horizontal adjustment, clean-out door and an additional 18″ top section.


Wireless remote control with 60′ tethered remote back-up system for chipper operation. Functions include forward/reverse of feed works, up and down of top feed roll, operation of chip discharge chute and throttle.

Cab and Loader (optional)

Model 250 Hydraulic Knuckleboom Loader with 23′ extended boom reach, turntable bearing with 280-degree swing, 2537 log grapple with 360-degree turn motor. Stationary rising operator’s cab and console, complete with joystick controls for loader, Red Dot combination air conditioner/heater, cab-mounted MICS, engine gauge panel, emergency shut-down system, six-way adjustable swivel seat, color-tinted safety glass with steel guard

  • Microchip configuration with chip accelerator and forestry grate
  • Automatic reversing fan system
  • Rear hydraulic stabilizers
  • Light package
  • ESPAR heating system for cold-weather start
  • 11 HP air compressor with lockable enclosure
  • 320L Caterpillar undercarriage or N538 Strickland undercarriage

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