McMillen 12-Inch Auger Bit for Skid Steers
Overview
McMillen's 12-inch auger bit is the most common size for wooden fence post holes and small tree planting. Pairs with McMillen auger drive units. McMillen is a leading US auger manufacturer with Canadian dealer presence through STIHL and equipment dealers. Available in Canada.
Canada Availability
Best for: fence posts, tree planting, footings
Compare with: Baumalight 10 Inch Skid Steer Auger Bit · Baumalight 12 Inch Skid Steer Auger Bit · Baumalight 18 Inch Skid Steer Auger Bit
Key Facts
- Bit diameter: 12 inches
- Application: fence posts, tree planting, footings
- Drive: McMillen auger drive unit
- Mount: hex drive
- Typical bit weight: 35–55 lbs
- Hydraulic flow: determined by auger drive unit (typically 15–30 GPM standard flow, 30–45 GPM high-flow for large drives)
Is This Right For You?
Buy if
- You already have an auger drive unit and need the right bit for your soil type or hole diameter
- You drill specific hole sizes for fence posts, footings, or tree planting and need diameter variety
Skip if
- You don't have an auger drive unit — a bit alone does nothing without a compatible drive motor
- Your soil is solid rock or hardpan — standard earth bits fail fast, you need a dedicated frost/rock bit
Also consider
- Rock or frost auger bit if your ground is caliche, Shield rock, or frozen Prairie soil
- Auger drive unit if you don't yet have one compatible with your machine's hydraulic flow
Compatible with all skid steer brands and compact track loaders via universal SSQA quick attach. Mid-frame machines (S450–S650 class) are the most common fit.
About McMillen in Canada
McMillen is a US-based manufacturer of auger drives and bits with a long track record in North American construction and agricultural markets. Their heavy-duty auger systems are available through equipment dealers across Canada and are built to handle demanding soil and rock conditions.
Care & Maintenance
- Grease the drive unit gearbox per the manufacturer's schedule — typically every 8 hours of operation; a starved gearbox is the most common cause of drive unit failure
- Inspect bit carbide teeth after every use in rocky or abrasive soil — worn or chipped teeth increase drive unit load and reduce penetration
- Replace a worn pilot bit before the main teeth wear — the pilot centers the bit and prevents wobble that stresses the drive unit gearbox
- Check hydraulic hose connections at the drive unit before each use — hose chafing in tight soil is a common failure point
- Store bits vertically or with exposed carbide protected — storing lying flat with unprotected carbide causes chipping from incidental contact
How to Connect
- Attach auger drive head using Bob-Tach
- Connect high-flow hydraulic couplers (colour-coded on most brands)
- Verify rotation direction — auger should rotate clockwise when viewed from above
- Lower auger to ground and test rotation at idle before digging
Ready to Buy in Canada?
Pricing varies by region and dealer stock levels change seasonally. For current availability and a real quote, contact a local dealer.
Find a Dealer Near You →Complete the job — you might also need:
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View product →✓ Last checked: March 2026