The Ground Hog HD99 is a towable hydraulic earthdrill designed for power, ease of use, and low maintenance. As the most powerful model in the Ground Hog lineup, it features a 9hp Honda or Subaru engine and can handle augers up to 18 inches in diameter. Its hydraulic system provides variable speed and reverse, making it effective even in tough conditions. The HD99 is engineered for operator comfort with a balanced design, multiple handlebar positions, and a pivoting drilling head for uneven terrain.
Large highway-rated tires enhance mobility, while a locking mechanism secures the auger during transport. Built with heavy-duty, powder-coated steel, the HD99 has a pivoting engine cradle for protection and a compact frame for easy transport. It includes a towbar with a 2-inch hitch coupler for jobsite and street transport. Its hydraulic system, using high-quality Parker components, requires minimal maintenance, with an efficient fluid reservoir for cooling. Overall, the HD99 is a durable and reliable earthdrill built for demanding jobs.
| Auger Speed | 140 rpm @ 3600 engine rpm (no load) |
| Auger Torque | 275 ft. lbs. torque (approximate) |
| Maximum Depth | Depends on length of Auger |
| Weight | 295 lbs. (134 kg) (with fluids) |
| Length | Normal Drilling 100 inches(253 cm) |
| Length | Close-up Drilling 75 inches (190 cm) |
| Width | 34 inches (86 cm) |
| Height | 38 inches (96 cm) |
