McMillen 18-Inch Auger Bit for Skid Steers
Overview
McMillen's 18-inch auger bit is a large-diameter drilling bit for structural foundations, utility pole bases, and major tree planting holes. Compatible with McMillen's high-torque X2475 and X3575 auger drives on full-size skid steers. Carbide-tipped flighting handles mixed soil and gravel. Used extensively by Canadian construction contractors and tree service companies. Available through authorized McMillen dealers in Canada.
Canada Availability
Best for: structural foundations, utility poles, major tree planting
Compare with: Baumalight 10 Inch Skid Steer Auger Bit · Baumalight 12 Inch Skid Steer Auger Bit
Key Facts
- Bit diameter: 18 inches
- Type: large-diameter auger bit
- Compatible with: McMillen X2475, X3575 high-torque drives
- Cutting teeth: carbide-tipped
- Application: structural foundations, utility poles, major tree planting
- Typical bit weight: 50–80 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.
✅ Last checked: March 2026