Wood Product Processing System

Sawmill & Secondary Wood Processing from WSM

WSM wood debris processing system.
WSM biomass feedstock processing machines
WSM wood log yard debris grinders
WSM plywood processing machinery

End products include: Biomass feedstock, boiler fuel, compost, landscape material, and wood pellets/densified fuel feedstock

WSM components like wood hogs, bark hogs. and our vertical and horizontal grinders make wood processing reliable, less labor intensive, and more profitable. Years of field experience have gone into the features that will make your operation more reliable and able to handle a wide range of incoming feedstock — forest residuals, LVL/plywood trim, slabs, bark, log yard debris, trees/stumps, lily pads, and biomass feedstock.

WSM Hammermills

WSM Hammermills are high speed, high volume mills for high capacity milling to a small particle size. These rugged mills have near full circle sizing screens to maximize production and deliver a consistent end product.

See Hammermills in detail.

WSM Horizontal Grinders, Horizontal Hogs

WSM Horizontal Grinders / Hogs offer a full range of machine sizes for processing – up to 150 tons per hour, delivering superior processing performance while minimizing horsepower and maintenance requirements.

The horizontal feed allows for processing of large, bulky material at a metered rate to help maximize capacity.

See Horizontal Grinders / Hogs in detail.

WSM Vertical Grinders, Vertical Hogs

WSM Vertical Grinders / Hogs are a great option for processing shorter incoming feedstock with a smaller installation footprint. The same rugged construction and maintenance friendly features ensure reliable performance processing boiler fuel, chip overs, lily pads, and chip overs to a consistent product size with minimum maintenance.

See Vertical Grinders / Hogs in detail.

WSM Shredders

WSM Shredders are massive machines for the largest capacity requirements. These machines deliver high tip speed for small, consistent fiber sizing with increased area for more thru-put, and flexible / interchangeable tooling. Severe duty hybrid hammermill/grinders designed for effective reduction of a wide range of material, featuring mill duty construction to deliver 24/7 operation of producing premium quality feedstock.

See Shredders in detail.


WSM’s complete line of screening equipment helps reduce maintenance and operating costs by screening soil/dirt and already sized product prior to grinding, as well as further maximize fiber value with precise classification of products after grinding.

WSM Oscillating Screens

WSM Disc Screens are ideal for high volume classification of material including bark, hog fuel, sawdust and shavings, and biomass feedstock.

Aggressive agitation of WSM’s heavy duty rotating discs improves screening efficiency. Low speed smooth operation eliminates the need for special support structures. Space-saving design reduces installation costs. A full range of disc screen sizes and configurations available with processing capacities up to 600 tons per hour.

See Disc Screens in detail.

WSM Screens Conveyors

WSM Vibrating Conveyors and Screens for multiple applications: simple transfer conveyors, high capacity screening, material distribution, and grinder infeed conveyors.

These rugged units move high volumes of material with low horsepower requirements, leveling and orienting material, reducing surges to downstream equipment and helping to optimize efficiency.

See Vibrating Screens in detail.

WSM Ocsillating Screens

WSM Oscillating Screens are available in a broad range of production capacities from 8 to 80 units per hour.

For high volume bark screening for mulch, or precise classification of sawdust and shavings for animal bedding, the WSM Oscillating Screen is a favorite across a variety of industries. Years of field experience have gone into the features that make your operation easier to run – and your screen easier to maintain.

See Oscillating Screens in detail.

Panel & Engineered Wood Processing from WSM

WSM wood processing equipment.
WSM engineered wood processing machines
WSM fiberboard processing machinery
WSM wood panel processing grinders

End products include: New board furnish and fuel products

The Panel and Engineered Wood Industries have relied on WSM delivering wood fiber and wood waste processing solutions for decades. From fiber screening and milling systems and bark hogs and wood hogs — to panel shredder/board breakers — to fuel processing — to complete urban wood recycling system — WSM’s range of projects and field experience will improve your plant operations by improving fiber quality and reducing fiber costs.

WSM Horizontal Grinders, Horizontal Hogs

WSM’s Low RPM Horizontal Grinder are complete processing systems available in sizes from 12” to 74” wide.

Reject boards and skeletons are fed onto a belt or vibrating conveyor to the aggressive powered feedroll that grips and feeds the material into the grinding chamber, producing a consistent output. The low profile design makes it easy to locate in your plant.

See Horizontal Grinders in detail.

WSM Horizontal Grinders, Horizontal Hogs

WSM Horizontal Grinders / Hogs are rugged systems for higher volume grinding requirements, helping you turn your wood waste into marketable wood fiber.

Capacities from 1 – 150 tons per hour, these mill duty grinders are designed and built to supply superior processing performance while minimizing horsepower and maintenance requirements

See Horizontal Grinders / Hogs in detail.

WSM Hopper Fed Grinders, Hopper Fed  Hogs

WSM Low RPM Hopper Fed Grinders are a great solution for grinding scrap into reusable fiber. These industrial grinders are easy to install and feature automatic unmanned operation, delivering reliable and low maintenance operation with “Dump’N’Go” batch feeding.

Supplied with electrical control panel with motor starters, push buttons, and PLC logic control to help you maximize productivity.

See Hopper Fed Grinders in detail.


WSM’s complete line of screening equipment helps reduce maintenance and operating costs by screening soil/dirt and already sized product prior to grinding, as well as further maximize fiber value with precise classification of products after grinding.

WSM Oscillating Screens

WSM Disc Screens are ideal for high volume classification of material including bar, hog fuel, and biomass feedstock. Aggressive agitation of WSM’s heavy duty rotating discs completes screening efficiently.

Low speed smooth operation eliminates the need for special support structures. Space-saving design reduces installation costs. A full range of disc screen sizes and configurations available with processing capacities up to 600 tons per hour.

See Disc Screens in detail.

WSM Screens Conveyors

WSM Vibrating Conveyors and Screens Severe duty, natural frequency Vibrating Conveyors and Screens for multiple applications: simple transfer conveyors, high capacity screening, material distribution, and grinder infeed conveyors for LVL/plywood trim, slabs, and forest residuals.

Power spring design provides a reliable, trouble free, long-life conveyor with dependable, low cost operation.

See Vibrating Screens in detail.

WSM Ocsillating Screens

WSM Oscillating Screens are available in a broad range of production capacities from 8 to 80 units per hour for processing chips, bark, sawdust and shavings.

Available with a full range of options designed to meet your requirements. Available with easily replaceable heavy gauge stainless steel screens. Perforated or wire mesh screens with variable wire diameter as required.

See Oscillating Screens in detail.

WSM industrial screening equipment organics processing.

WSM Trommel Screens provide multiple, precise classification of material. Available in a wide range of sizes and capacities. Built for mill duty applications, these units are designed to provide years of trouble free material separation. See Trommel Screens in detail

Pulp & Paper Processing from WSM

WSM paper and pulp processing equipment
WSM paper and pulp processing machinery
WSM paper and pulp processing machines
WSM paper processing grinders

End products include: wood chips and bark

The Pulp and Paper industry requires tough and reliable mill duty equipment for converting raw material into pulp or wood biomass. That’s just what WSM delivers — the most rugged, lowest maintenance grinding and screening equipment available.  From wood and bark hogs and our vertical or horizontal grinders we feature innovative design and maintenance features, like our pivoting grinder housing, provide the best solution to our fiber and fuel processing needs.

WSM Horizontal Grinders, Horizontal Hogs

WSM Horizontal Grinders / Hogs offer a full range of machine sizes for processing up to 150 tons per hour, delivering superior processing performance while minimizing horsepower and maintenance requirements.

The horizontal feed allows for processing of large, bulky material at a metered rate to help maximize capacity.

See Horizontal Grinders / Hogs in detail.

WSM Vertical Grinders, Vertical Hogs

WSM’s Re-Sizer converts chip overs into useable fiber with low maintenance and mill duty construction.  Handle large wood chunks, log ends, and small slabs without plugging. High Capacity. High Performance. Rugged Construction.   

Field proven performance at rates up to 75 TPH, this system can be easily integrated into your woodyard.

WSM Shredders

WSM Shredders are massive machines for the largest capacity requirements. These machines deliver high tip speed for small, consistent fiber sizing with increased area for more thru-put, and flexible /interchangeable tooling. Severe duty hybrid hammermill/grinders designed for effective reduction of a wide range of material, featuring mill duty construction to deliver 24/7 operation of producing premium quality feedstock.

See Shredders in detail.


WSM’s complete line of screening equipment helps reduce maintenance and operating costs by screening soil/dirt and already sized product prior to grinding, as well as further maximize fiber value with precise classification of products after grinding.

WSM Oscillating Screens

WSM Disc Screens are ideal for high volume material classification. Low speed smooth operation eliminates the need for special support structures.

WSM supplies both traditional Disc Screens for rough classification of material as well our unique Waterfall™ Disc Screen that delivers high capacity “fines” screening with improved screening efficiency due to increased material agitation.

See Disc Screens in detail.

WSM Screens Conveyors

WSM Vibrating Conveyors and Screens for multiple applications; simple transfer conveyors, high capacity screening, material distribution, and grinder infeed conveyors.

These rugged units move high volumes of material with low horsepower requirements, leveling and orienting material, reducing surges to downstream equipment and helping to optimize efficiency.

See Vibrating Screens in detail.

WSM Ocsillating Screens

WSM Oscillating Screens are available in a broad range of production capacities from 8 to 80 units per hour.

For high volume bark screening for mulch, or precise classification of sawdust and shavings for animal bedding, the WSM Oscillating Screen is a favorite across a variety of industries. Years of field experience have gone into the features that make your operation easier to run — and your screen easier to maintain.

See Oscillating Screens in detail.

Pallet Processing from WSM

WSM wood pallet processing machines.
WSM wood pallet processing machinery
WSM wood pallet processing equipment
WSM wood pallet grinding machines

Pallet recyclers and new pallet manufacturers need rugged, reliable equipment designed and built for their unique requirements. WSM has the most complete range of grinder styles for grinding whole pallets or pallet scrap. WSM grinders provide a consistent sized end product. From stand-alone Low RPM Grinders to complete Horizontal Grinding Systems — we can match the right grinder for your facility. Our grinders are tough and can handle the nails, repair plates, and tramp metal. Optional metal removal and screening for optimum end product.

WSM Hopper Fed Grinders, Hopper Fed  Hogs

WSM Low RPM Hopper Fed Grinders were designed with pallet grinding in mind. For whole pallets or pallet scrap. These industrial grinders are easy to install and feature automatic unmanned operation, delivering reliable and low maintenance operation with “Dump’N’Go” batch feeding.

Supplied with electrical control panel with motor starters, push buttons, and PLC logic control to help you maximize productivity.

See Hopper Fed Grinders in detail.

WSM Shredders

WSM Super Shredders are massive machines for the largest capacity requirements. These machines deliver high tip speed for small, consistent fiber sizing with increased area for more thru-put, and flexible / interchangeable tooling.

Severe duty hybrid hammermill/grinders designed for effective reduction of a wide range of material, featuring mill duty construction to deliver 24/7 operation of producing premium quality feedstock.

See Shredders in detail.

WSM Vertical Grinders, Vertical Hogs

WSM Vertical Grinders / Wood Hogs are a great option for processing shorter incoming feedstock with a smaller installation footprint.

The same rugged construction and maintenance friendly features ensure reliable performance processing boiler fuel, chip overs, lily pads, and chip overs to a consistent product size with minimum maintenance.

See Vertical Grinders / Hogs in detail.

WSM Horizontal Grinders, Horizontal Hogs

WSM’s Low RPM Horizontal Grinders are a complete processing system available in sizes from 12” to 74” wide.

Material is fed onto a belt or vibrating conveyor to the aggressive powered feedroll that grips and feeds the material into the grinding chamber, producing a consistent output. The low profile design makes it easy to locate in your plant.

See Horizontal Grinders in detail.

WSM Horizontal Grinders, Horizontal Hogs

WSM Horizontal Grinders / Hogs are rugged systems for higher volume grinding requirements, helping you turn your wood waste into marketable wood fiber.

Capacities from 1 – 150 tons per hour, these mill duty grinders are designed and built to supply superior processing performance while minimizing horsepower and maintenance requirements.

See Horizontal Grinders / Hogs in detail.


WSM’s complete line of screening equipment helps reduce maintenance and operating costs by screening soil/dirt and already sized product prior to grinding, as well as further maximize fiber value with precise classification of products after grinding.

WSM Disc Screens

WSM Disc Screens are ideal for high volume material classification. Low speed smooth operation and space saving design helps reduce installation costs.

A full range of disc screen sizes and configurations available with processing capacities.

See Disc Screens in detail.

WSM Ocsillating Screens

WSM Oscillating Screens provide precise material classification at capacities up to 80 units per hour and are available with a full range of options designed to meet hour requirements.

Available with easily replaceable heavy gauge stainless screens. Perforated or wire mesh screens with variable wire diameter as required.

See Oscillating Screens in detail.