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WM4000 Industrial Sawmill

The Next Generation in High Tech Sawing


High Productivity, Low Maintenance

Put the WM4000 to work for you as a primary, stand-alone headrig or integrate it into a large operation. The low cost of ownership, lower maintenance, and higher productivity creates a formula for your success.


Production Capabilities

  • Lumber Grade, Dimensional, Flooring, Reclaimed, Pallet
  • Cants/Beams Pallet stock, truck mats, railroad ties, timber frame, post, fencing

Standard Operation and Log Handling Features

HMI Touchscreen

HMI Touchscreen Control Panel 
High tech, state of the art Human Machine Interface (HMI) plus built in diagnostics.

WM4000 Headrig Joysticks

Deluxe Joysticks 
With fully proportional forward/reverse and left/right base motions.

WM4000 Off-Feed Conveyor

Off-Feed Conveyor
Built-in conveyor automatically powers on and off to assist material flow.

WM4000 Headrig Operator Cab

Spacious 5' X 5' Operator Cab
Our largest cab available comes standard with the WM4000.

Wood-Mizer WM4000 Headrig Log Clamp

Floor Anchored Log Clamp
Mounts to floor, removes stress from bed.

Honey Grove Hardwoods improved efficiency, yield, and profits by replacing their circular sawmill with a WM4000 headrig. Read Their Story

The WM4000 is ideal to:

  • Launch a startup sawmill operation.

  • Add to a circle mill operation to get the most profit out of high-grade and irregular logs.

  • Add to a thin kerf operation to boost productivity with a smaller initial investment.

  • Add to a WM3500 operation to more than double production capabilities.

  • Replace an expanding portable sawmill operation to meet increasing production requirements.


30HP (22.4kW) Elec 460V/60Hz 3Ph 100Amp
Length 196" (4.98m) 
Width 1.5"-1.75" (38mm-44mm) 
Cutting Capacity
Length 21'6" (6.5m)
Length (with Board Removal) 20'3" (6.17m)
Diameter  40" (1m) 
Max. Clamp Width (from stop block)  30" (762mm) 
Min. Clamp Width (from stop block)
2" (50mm) 
Max. Width of Cut (guide to guide)  34" (860mm) 
Max. Cant Width (outer guide to stop block)  31" (790mm) 
Throat Height (blade to head)  13" (330mm) 
Hydraulic System
Hydraulic Output 15GPM (57LPM)
Motor 15HP (7.5kW)
Blade Wheel
Diameter 25" (635mm)
Type Belted Cast Steel (steel wheels optional)
Feed System
Head Speed (forward) 150 ft/min (46 m/min)
Head Speed (reverse) 300 ft/min (91 m/min)
Dimensions & Requirements
Length (bed only) 27'6" (8.38m)
Length (with cab) 37' (11.28m)
Width (machine only)  9'10" (3m) 
Width (with cable boom)  16'-20' (4.87m-6m) 
Height (head only)  9'6"-10'3" (2.9m-3.1m) 
Height (with cable boom)  11'2" (3.4m) 
Bed Height  37-1/2” (952.5mm) 
Shop Air Supply  110 psi@16.5 cfm 
Normal Power Usage  36kVa, 43kWh, 66Amp 
Suggested Wire Size  50' (15.24m) max, 4AWG 
Dust Collection Port  6" (150mm) 

Headrig Options

Air Conditioning/Heat
Bed Extensions (6' Manual or 12' Hydraulic)
Log Deck (12' or 20')
Powered Taper Roller Set
Pressurized Lube Injection System

Standard Features

  • PLC setworks
  • Deluxe joystick sawmill controls
  • HMI screen
  • Spacious operator station
  • Pantograph cable configuration
  • Two bidirectional chain turners
  • Faster Servo up/down drive
  • Faster hydraulics & proportional control system
  • 40" log maximum diameter
  • Floor anchored log clamp
  • Laser sight
  • 3 side supports
  • 2 large diameter blade guide rollers with heavy-duty bearings
  • Heavy duty, taper (up/down) hydraulic rollers
  • Pressurized lubrication system
  • Airstrain blade tension
  • Precision ball screw head up/down with Servo
  • Material dragback
  • Foot pedal auto feed