Heavy-duty sawmill with the latest technology

Low operating costs and higher productivity with more log yield creates a formula for your success.


The WM4000 is the ‘next generation’ in thin-kerf sawmilling. The WM4000 combines the profitability enhancements of thin-kerf blades with productivity advances in automated sawing technology to create an ideal solution for any sawmill.

Only one operator is needed to manage log handling, sawing, and timber removal for further processing making the WM4000 a highly profitable machine. The WM4000 adapts easily for whatever cutting requirements are needed and delivers higher log yield at lower investment and operating cost than alternatives, increasing profitability and ability to produce diverse products quickly.

The WM4000 can be used as a standalone sawmill to process all required materials, or as an addition to an existing sawmill to process irregular logs or to produce custom orders that existing equipment is not suited for.

The advanced PLC setworks are displayed on a 19 cm touch-screen monitor which presents board and cant sizes along with current head height, feed position, and blade power. The setworks feature new ways of increasing productivity and reducing steps required in the sawing process, including remembering the start and stop locations of the log to reduce unneeded head movement. A built-in powered board conveyor automatically turns itself off after moving a board or cant from the sawmill.

The log bed is heavily constructed – reinforced with 50% more steel than the WM3500. Servo motors ensure faster and accurate head positioning, resulting in more timber cut in each shift. Powerful hydraulic log handling enable easy manipulation of large logs and several options are available to meet your requirements.


Operator Station

Standard raised platform gives operator clear view of work. Optional enclosure.

Heavy Duty Bed

50% more steel than the WM3500 bed.

Board Removal Conveyor

Automatically activates when board is being removed.

Power Roller

Easily enables you to position the log on the bedrails, and can also assist in removing sawn cants.

Advanced Touch Screen Setworks

Wood-Mizer’s most efficient and powerful industrial PLC setworks system.

Two Bi-directional Chain Turners

Quickly turn and position the log with these heavy-duty turners.



Power 22 kW Electric
Max. Log Diameter 100 cm
Max. Log Length 6.5 m
6.17 m (with Board Removal)
Max. Width of Cut 86 cm
Max. Cant Width 78,5 cm
Max. Depth of Cut 33 cm
Max. Clamp Width 66 cm
Min. Clamp Width 5 cm
Setworks Touch Screen Setworks
Head Up/Down Electric
Head Forward/Reverse Electric
Blade Guide Arm Electric
Blade Lubrication Automatic
Blade Tension System Pneumatic
Debarker Optional
Additional Options Laser Sight
Roller, Double Block Blade Guide
Board Return Arms
Sawdust Collection Port Diameter 150 mm
Length 4980 mm
Width 38 mm
Diameter 635 mm
Type Belted
Blade Wheel Material Cast Steel
Bed Construction Monorail
Angled Bed Rails N/A
Bed Extensions N/A
Trailer Package N/A
Bed Features Operator Station
Heavy-Duty Bed With Short Conveyor
Manual N/A
STANDARD Hydraulic N/A
SUPER Hydraulic Log Leveling Roller
3 Double Vertical Supports
2 Chain Turners
Central Clamp
2 Hold-down Clamps
Power Roller
Hydraulic Pump 7.5 kW
Frame Construction Cantilever
Power Requirements 3 Phases, 400 V, 50 Hz
Shop Air Supply 110 PSI
Standards CE
Options Incline Conveyor
Transfer Deck
Log Deck 3.6 m
Log Deck 6 m
Air-Conditioned Operator Cab