Specs
Log Diameter
Depth of Cut
Max Horsepower

Description
Whats Included
Explore our 'Classic' models. While our refreshed look is on the horizon, rest assured — the functionality, performance, and quality remains the same. Secure your Classic model today while supplies last and experience enduring excellence.
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.
PRODUCT HIGHLIGHTS
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technical specs (Kapil)
Compare technical data to determine which Frontier is right for you. (Kapil)
Meet the Machine

Set of 4 adjustable leveling feet to support your sawmill log bed. Use the micro-adjust feet for more precise log bed leveling. Package includes 4 leveling feet.
Note: Additional set of four leveling feet is required to support each track extension sold separately.

still have questions?
Frontier offers various forms of support to assist both newcomers and experienced sawyers. Our Sawmill.TV resource, in collaboration with Norwood, includes hundreds of DIY videos and guides on portable sawmilling. But if you prefer to reach out, please pick up the phone and give us a call at +1-800-408-9995 during our business hours from Monday through Friday. You can also contact us via email at info@frontiersawmills.com, and we'll get back to you promptly.
The sawhead is pre-assembled at the factory, and thanks to the fully illustrated step-by-step manual with exploded illustrations, diagrams, and photographs, the rest can usually be put together in a single day. You'll only need a few basic tools, including combination and Allen wrenches, a ratchet with SAE and SI sockets, an adjustable wrench, a Phillips screwdriver, a drill, lubricating and engine oils, and a grease gun. Regardless of your skill level, Frontier Sawmills are designed to be user-friendly and easy to operate. We also provide toll-free support from the moment your Frontier Sawmill arrives, through your first cuts, and beyond.
Frontier sawmills are designed to be just as easy to maintain as they are a pleasure to use. Just a few simple routine steps will keep you and your sawmill cutting smooth, valuable custom boards, and beams. The easy-to-open guard covers give you ample room to work, and precision-balanced cast-iron band wheels can last a lifetime. Basic greasing, lubrication, and blade replacement instructions are outlined in the easy-to-follow, fully illustrated operating manual. Spare parts kits and engine maintenance packages are available for each Frontier sawmill to make it easy to keep your investment running smoothly while you make the sawdust fly.
With every Frontier sawmill, you receive a one-year consumer warranty. We will repair or replace, at our discretion, any part returned to us and found to be defective through manufacturing within the first year of the original purchaser’s ownership (except consumable items like belts, blades, bearings & clutch). The engine is covered under warranty directly with the engine manufacturer (two years by Briggs and three years with by Kohler). We back that up with a 30-day money-back guarantee. If your Frontier doesn’t do everything we say, simply return it to us within 30 days and receive a refund (shipping not included)*.
*Not including used blades, damaged parts or restocking fees.