west salem machinery, WSM, industrial grinders, screens, conveyors

More than just WSM machines…

Though the heart of a BioPrep processor is WSM’s world-renowned machinery, only WSM can expertly integrate those machines to make a BioPrep system what it is: a faster, more efficient complete processing system feeding your bio-fuel plant more reliably and more economically.


… and more than just WSM systems integration

WSM has over 67 years experience shredding, grinding, milling, screening, and crushing everything from unsorted urban waste to raw timber. We know a lot about durability and what it takes to make machines perform with minimal downtime in any environment.

You tell us what you’re grinding, how small you want it,
and we’ll know what to do about it.

Learn more about WSM Manufacturing Heritage

west salem machinery, WSM, industrial grinders, screens, conveyors
west salem machinery, WSM, industrial grinders, screens, conveyors

We’re together from start to finish… and beyond.

WSM partners with you every step of the way.

Our 67 years of field experience help you in site preparation, engineering, manufacturing, delivery, build, testing, and startup.

Beyond making sure everything is up and running, our start up service includes our technical service group and maintenance training.

Industries WSM BioPrep serves: alternative fuel, anaerobic digestion, biofuels/bio-refining, biogas, biomass power, cellulosic ethanol, pellets/densified fuel, RDF, recycling/compost, soils/mulch, and wood products/pulp & paper.

Industries WSM BioPrep serves: alternative fuel, anaerobic digestion, biofuels/bio-refining, biogas, biomass power, cellulosic ethanol, pellets/densified fuel, RDF, recycling/compost, soils/mulch, and wood products/pulp & paper.

west salem machinery, WSM, Bioprep - baled ag fiber processing

Baled Ag fiber processing: WSM BioPrep leads the industry

WSM BioPrep Bale Processing Systems* are making a name for themselves around the world. WSM high capacity Bale Processing Systems feature production lines capable of processing up to 60 large rectangular bales an hour into process-ready fiber. Each production line can be configured to include bulk bale receiving and singulation, bale QC inspection with reject option, automatic de-stringing & twine collection, bale chopping/metering, screening & cleaning, and finish milling. By configuring multiple lines — the WSM BioPrep Bale Processing System can deliver high capacity production of baled feedstock materials. *Patents pending

Questions about WSM Bioprep Systems?

Just ask. An application expert will contact you within 1 business day.
  • This field is for validation purposes and should be left unchanged.

Your Ag product + your required result = we do the rest

BioPrep foodstock materials processed

Whatever agricultural product your facility uses as feedstock, our processing systems will turn it into the required size and shape. WSM BioPrep systems feature bulk bale receiving and singulation, bale QC inspection with reject option, automatic de-stringing & twine collection, bale chopping/metering, screening & cleaning, and finish milling. Continuous testing of output insures your plant keeps running to specifications.

Biofuel feedstock we process: arundo donax, bagasse, corn stover, energy crops, flax, food waste, giant king grass, grass straw, hemp, miscanthus, MSW, organics, sorghum, soy stover, switch grass, wheat straw, wood, and wood fiber.

west salem machinery, WSM, industrial grinders, screens, conveyors

Big machines, precisely manufactured

Everything we build is manufactured to WSM’s exacting specifications by skilled craftsmen – machinists and fabricators who take pride in building big, quality machines using advanced CNC manufacturing tools for precision products. A heritage of manufacturing excellence for which WSM is known around the world.

Learn more about WSM Manufacturing Heritage

Inside WSM BioPrep Processing systems are WSM bale processing & preparation systems, bale chopper, bale de-stringer, chain feeders, disc screens, hammermills, horizontal grinders, oscillating screens, screener/cleaner, shredders, vertical grinders, and vibrating screens.