12 in. Heavy-Duty Auger for Tractor 3-Point Post Hole Diggers

The 12 in. Heavy-duty auger with 2 in. Round is for use with tractor 3-point post hole diggers and skid steers to make fence installation easier. The heavy-duty auger attaches to most 2-in. gearbox output shafts. This auger features thick double-flighting with more extensive welding and a reinforced input shaft collar. for tractors and skid steers with 2 in. round output shafts, this auger bit is perfect.

The 12 in. Heavy-duty auger with 2 in. Round is for use with tractor 3-point post hole diggers and skid steers to make fence installation easier. The heavy-duty auger attaches to most 2-in. gearbox output shafts. This auger features thick double-flighting with more extensive welding and a reinforced input shaft collar. for tractors and skid steers with 2 in. round output shafts, this auger bit is perfect.

12 in. Auger for Post Hole Diggers

Key Features:

  • Diameter: 12 in.
  • Height: 48 in.
  • Bolt on spiral tip
  • 4 replaceable, heavy-duty high carbon cutting teeth
  • This auger is capable of auguring a 4 ft. deep hole
  • Heavy-duty 3-point auger bit compatible with 2-in. round drive post-hole diggers
  • Reinforced collar (takes two 1/2 in. diameter bolts at 90 degrees apart)
  • Mounts on all gearboxes with 2" smooth bore output shafts, such as AgKnx, King Cutter, Speeco, County Line, Work Saver, Bush Hog, etc.

12 in. Heavy-Duty Auger Specifications

Auger Diameter12 in.
Auger Length48 in.
Auger MaterialSteel
Auger Speed0 rpm
Boom Diameter0 in.
Boom Pole ShapeN/A
CompatibilityPost Hole Digger, Skid Steer Digger
FeaturesReplaceable Cutting Blade
Gearbox RatioN/A
Hitch TypeN/A
Lift Capacity0 lb.
Maximum Tractor Horsepower200 hp
Minimum Tractor Horsepower50 hp
Number Of Lifting Loops0
Primary MaterialSteel
Product Height12 in.
Product Length48 in.
Product Weight58 lb.
Product Width12 in.

Advantages of 12 in. Heavy-Duty Auger for 3-Point Post Hole Digger

A 12-inch heavy-duty auger for a 3-point post hole digger offers several advantages, particularly for tasks requiring larger, deeper, or more durable holes. Here are the key benefits of a 12-in auger bit:

  1. Increased Digging Capacity: The 12-inch diameter allows for wider holes, making it ideal for larger posts, such as those used in fencing, deck construction, or structural supports. This size accommodates thicker posts or provides extra space for concrete footings, enhancing stability.
  2. Enhanced Durability: Heavy-duty augers are typically constructed from high-strength materials like reinforced steel with replaceable carbide cutting edges. This durability ensures they can withstand tough soil conditions, including rocky or clay-heavy terrain, without bending or breaking.
  3. Efficient Soil Removal: The wider auger flights (the spiral blades) move more soil per rotation compared to smaller sizes, speeding up the digging process. This is especially useful for projects requiring multiple holes, saving time and effort.
  4. Versatility: A 12-inch auger strikes a balance between smaller (e.g., 6-inch) and larger (e.g., 18-inch) options, making it versatile for various applications—fence posts, tree planting, or sign installation—while still being manageable for most tractors with a 3-point hitch.
  5. Deeper Penetration: Heavy-duty models often pair with robust 3-point diggers, allowing for deeper holes (commonly up to 48 inches or more with extensions). This depth is critical for ensuring stability in applications like tall fences or load-bearing structures.
  6. Compatibility with Powerful Tractors: Designed for 3-point hitches (typically Category 1 or 2), a 12-inch heavy-duty auger leverages the tractor’s PTO power effectively, making it suitable for tractors up to 60 HP or more, depending on the model. This ensures consistent performance without overloading the equipment.
12 in. Heavy-Duty Auger12 in. Heavy-Duty Auger

How Does the 3-Point Post Hole Auger Bit Work?

A 3-point post hole auger bit is an agricultural tool designed to dig holes in the ground, typically for setting fence posts, planting trees, or installing other structures. It’s commonly attached to a tractor’s 3-point hitch system, which connects to the tractor’s rear and uses its power take-off (PTO) to drive the auger. Here’s how it works:

  • Attachment to Tractor: The auger is mounted to the tractor via the 3-point hitch, a standard linkage system with two lower arms and one upper link. This setup stabilizes the auger and allows it to be raised or lowered by the tractor’s hydraulic system.
  • Power Source: The auger bit itself—a helical, screw-like blade—is connected to the tractor’s PTO shaft. When engaged, the PTO spins the auger, providing the rotational force needed to dig into the soil.
  • Digging Process:
    • The operator lowers the auger bit to the ground using the tractor’s hydraulics.
    • As the PTO spins the bit, the helical flights (the spiral blades) cut into the soil, breaking it up and pulling it upward.
    • The dirt is displaced around the hole or lifted out, depending on soil type and auger design. The pointed tip of the bit helps it penetrate the ground efficiently.
  • Hole Formation: The auger continues to bore down to the desired depth, typically determined by the length of the bit (common sizes range from 6 to 12 inches in diameter and 3 to 4 feet in length). The operator can stop and lift the auger periodically to clear excess soil if needed.
  • Completion: Once the hole is deep enough, the operator raises the auger via the 3-point hitch, leaving a clean, cylindrical hole ready for a post or other use.

3-Point Post Hole Digger Applications

Additional information

Edited by

Yjx