McMillen 12-Inch Auger Bit for Skid Steers🔵 Mid
🟡 High Flow
⚠ High-flow machine required
✓ Compatible with high-flow CTL
✓ Fits most skid steers, including small-frame
View on mcmillenauger.com →
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
Available in Canada through McMillen dealers and equipment dealers.
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
🔧 Machine Compatibility
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
⚠ Safety NoteAugers typically require 15-35 GPM — verify your machine's aux hydraulic flow before connecting
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.
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Complete the job — you might also need:
✅ Last checked: March 2026
Source: skidsteerattachments.ca/catalog/augers/mcmillen-auger-12in/
