This 2004 Morbark 4600XL is a used horizontal grinder — sometimes referred to as a tub-style wood hog or wood grinder — a class of heavy-duty size-reduction machines used to process wood waste, green waste, land-clearing debris, and biomass material into chips, mulch, or hog fuel. Morbark is a well-established American manufacturer with a long history of building industrial wood processing equipment, including horizontal grinders, chippers, and whole-tree processors, serving forestry, land clearing, recycling, and biomass energy industries.
What sets this particular unit apart is its electric powertrain, which the seller describes as a rare configuration for this model. The machine is driven by dual 400 HP Western electric motors on the mill drive, with an additional 150 HP Western electric motor handling the auxiliary drive — giving a combined mill drive output of 800 HP. The machine records 7,470 hours of use and is located on the Central Coast of California.
The grinder comes complete with its Western Plains Electric Motor Control Center, housed in a 10 x 10 insulated skid-mounted enclosure. The electrical infrastructure includes an 800-amp main breaker, a 600-amp main breaker, a Soft Tronics 400 HP soft start, a Wye Delta 150 HP soft start, a total service capacity of 1,400 amps, and an additional 15 KVA 480-volt transformer with attached breakers. A cross-belt magnet and a Brunnel torque limiter are also included as part of the system.
The hammermill was comprehensively rebuilt fewer than 100 hours ago using Morbark OEM parts sourced through Pape. The scope of that rebuild was extensive: the shaft, bearings, and bearing housings were all replaced on both sides, as were the drum end plates, wedge clamps, rod locking plates, rods, hammers, inserts, insert holders, a new 10-groove sheave, hood wear plates, side wear plates, and the anvil. Left and right-side base filler tops were renewed, hydraulic control valves for floor and yoke control were replaced, new drive belts were fitted, and numerous hydraulic hoses were replaced. The feed floor was rebuilt using AR40 plate steel.
The sale includes a 2007 Morbark 4048 radial stacking discharge conveyor. The seller states the machine is available for a demonstration at its current Central Coast, California location, and describes it as ready for immediate relocation and operation.
This description was generated automatically from the listing details and may not reflect every specification. Please confirm with the seller before purchase.