*Photos and videos may show earlier models or optional attachments (e.g. mobility package) and accessories.
Specs
Log Diameter
The maximum log diameter that your mill will be able to process.
Width of cut
The largest width of material your mill will be able to cut.
Max Horsepower
The indicated horsepower of the engine’s maximum output under ideal conditions.

- Description
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Introducing the revamped workhorse: The tried-and-true Frontier Sawmill returns with a bold, new look, maintaining its robust construction.
A bigger mill to tackle larger logs and heavier jobs.
The OS31 delivers the power and capacity to process logs up to 31 inches in diameter. Engineered with time-saving innovations like the patented Auto-Locking Sawhead and EZ Blade Tension to guarantee ease of use and straightforward operation. The standard track cuts boards up to 11', with optional 7' extensions available for longer logs. Stainless steel bunk caps prevent staining of valuable hardwoods. A cam dog secures squared beams and boards quickly, along with a log dog and two sets of long and short log posts. Operate at ground level with included leveling feet or elevate your log deck for a more comfortable working height with optional leveling legs. Customize the OS31 with a mobility towing kit, log loading system, and track extension options. You don't have to be a full-time pro sawyer to appreciate the capabilities of a machine that can do more.
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PRODUCT HIGHLIGHTS
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Ramp up your sawmill with a log loading system
Add mobility and tow it right to your milling site
TECHNICAL SPECS
Compare technical data to determine which Frontier is right for you.
WHAT OUR CUSTOMERS ARE SAYING
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os31 attachments
Customize your mill with optional leveling legs, log loading ramps, Auto Blade Lube system, and track extensions so you can cut logs of any length.