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OS31 Portable Sawmill

best seller

A bigger portable sawmill to tackle larger logs and heavier jobs.

Sku: OS31-0013G

5 reviews
AS LOW AS Bread

$131.02 / MONTH *

0% APR AVAILABLE FOR 24-MONTH FINANCING* UNTIL MAR 31

Engine Type
Bundles

Save 10% on all bundle packages with the purchase of a sawmill. Add to your order now and save!

Mobility Towing Bundle with 7' Track Extension for OS31

Mobility Towing Bundle with 7' Track Extension for OS31

+$2,498.40$2,776

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Track Extension Bundle with Mobility Sub-Frame Ext for OS31

Track Extension Bundle with Mobility Sub-Frame Ext for OS31

+$989.10$1,099

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Blades and Deluxe Maintenance Bundle for OS31

Blades and Deluxe Maintenance Bundle for OS31

+$352.80$392

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Track Extension Bundle with Dog and Rest for OS18

Manual Log Loading Bundle with Toe Board for OS23, OS27 & OS31

+$789.30$877

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Optional Attachments
Auto Blade Lube System image1

Auto Blade Lube System

+$115

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Log Loading Ramp Package image1

Log Loading Ramp Package

+$437

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Mobility Towing Kit for OS23, OS27 & OS31 with 6 Support Jacks image1

Mobility Towing Kit for OS23, OS27 & OS31 with 6 Support Jacks

+$1,737

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  • Ships in: In stock, ready to ship. Free Shipping on sawmill orders. *Additional charges for Alaska and Hawaii.
  • Easy Financing with Shop Pay at Checkout
  • 1-Year Warranty and 30-Day Guarantee

$5,167

Specs

Log Diameter

31in

The maximum log diameter that your mill will be able to process.

Width of cut

23in

The largest width of material your mill will be able to cut.

Max Horsepower

14hp

The indicated horsepower of the engine’s maximum output under ideal conditions.

  • Description
  • Whats Included
  • Get a Quote

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.

  • Auto-Locking Sawhead
  • 9/8", 8/4", 6/4", 1"
  • 3/4" Set Display
  • EZ Blade Tension System
  • Adjustable Blade Guide
  • Manual Blade Lube System
  • Log Dogging Clamp (x1)
  • Long and Short Log Rest (x2)
  • Cam Dog (x1)
  • Stainless Steel Bunk Caps (x3)
  • Leveling Feet (x10)

Request a free quote from our experts.

PRODUCT HIGHLIGHTS

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Ramp up your sawmill with a log loading system

Load and roll logs onto your Frontier sawmill more easily and securely with the winch and ramp options. Pass the winch cable over and around the log, connect it to the log deck frame, and operate the winch to roll the log up the ramps onto the bed. This system also makes rotating the log on the bed easy and securely holds the log for dogging. It enables one person to operate the mill alone with ease.

Add mobility and tow it right to your milling site

For sawyers working in multiple locations, you can tow the OS31 right to your milling site with the optional mobility kit and jack support package. This option includes the mobility subframe, axle, 12-inch wheels with quick release steel fenders, removable drawbar, six adjustable support jacks, and the carriage lockdown system. Add the mobility kit now, or upgrade your mill in the future when the time is right for you.

TECHNICAL SPECS

Compare technical data to determine which Frontier is right for you.

log diameter
width of cut
max horsepower
log length
additional track extensions

WHAT OUR CUSTOMERS ARE SAYING

5.00
Based on 1 review
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Questions

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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.

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.

Some sawyers have their own tractors or loaders. If you don't have access to such equipment, you have the option to enhance your setup with the available log loading systems designed for the Frontier OS31. This includes a ramp package for efficiently moving logs onto an elevated sawmill bed. To further streamline the process, you can complement it with a log winching system. This system facilitates the movement of logs onto the sawmill bed and includes a log turning hook for rotating heavy logs and cants and hold them firmly against the log posts for dogging.

Yes, with the optional Mobility Kit you can tow the OS31 sawmill through your woodlot and directly to your sawing site. This includes a steel sub-frame, wheels, a quick-disconnect drawbar, running lights, wiring harness, safety chains, and support jacks. Additionally, there's an option to add a mobility kit sub-frame extension with extra jacks to support a 7 ft extended log deck. You can add the mobility kit now or choose to upgrade your mill in the future.

Standard, the OS31 band sawmill log bed is 14 feet long (4.3 m), which allows you to makes cuts up to 11 ft (3.4 m) in length. To saw longer material, you can add optional 7 ft (2.1 m) log deck extensions. You can add multiple extensions in stationary configuration to cut logs of any length. If you want to add the mobility towing system to your Frontier, you can still add one 7 foot bed extension and have it supported with the mobility sub-frame extension kit.