Ground Hog HD99 Towable Hydraulic Earthdrill

Professional Power, Zero Torque & Unmatched Reliability

The Ground Hog HD99 is the most powerful earthdrill in the Ground Hog lineup. Designed as a towable, hydraulic-driven system, it eliminates the physical strain of manual drilling by absorbing all the torque through its heavy-duty frame rather than the operator. Whether you are setting fence posts, planting trees, or digging footers, the HD99 provides the variable speed and raw power needed to tackle any Ground Hog auger up to 18 inches in diameter.

Key Features

• Powerful Hydraulic Drive: Driven by a 9HP Honda or Subaru engine, the hydraulic system provides variable auger speed and a reverse function, which is indispensable for backing out of heavy clay or freeing a stuck auger.

• Operator-Centric Design: The unit is perfectly balanced for an 8-inch auger, and the right-angle design ensures zero torque is transferred to the operator. The drilling head also pivots side-to-side to ensure vertical holes on uneven terrain.

• Three Handlebar Positions: Versatility is built-in with adjustable positions for standard drilling or "close-up" mode, allowing you to dig right next to walls, fences, or other obstacles.

• Rugged Towable Frame: Equipped with highway-rated tires and a 2-inch hitch coupler with safety chains, the HD99 is easy to transport between jobsites. Its compact, low-profile design also fits easily into the bed of a small truck.

• Engine Protection: A unique pivoting engine cradle keeps the motor level even when the drill is angled, ensuring proper oiling and extending the life of the engine.

• High-Efficiency Cooling: The 3-gallon hydraulic reservoir is uniquely shaped to maximize surface area for heat dissipation, keeping the Parker hydraulic components running efficiently during long workdays.

• Low Maintenance: With no mechanical shear pins or belts to snap, maintenance is simplified to basic oil, fluid, and filter changes. Easy-access drain plugs ensure maintenance is quick and mess-free.

Technical Specifications