Rotomec post hole diggers are built with heavy-walled piping and robust gearboxes, ensuring exceptional reliability for both homeowners and professionals. Whether you’re installing a fence, planting a row of trees, or setting up a new mailbox, Rotomec post hole diggers will efficiently tackle what would otherwise be a challenging task.
Reinforced boom
Models PHD-300 and 400 have a reinforced boom and three point hitch.
Double flighting
Heavy duty fully welded double flighting on all 9, 12, 18, 24 and 30″ augers.
Fish tail auger point
Fish tail auger point is standard on every auger size.
Fully enclosed shear pin safety
Our driveline yokes have the industries first fully enclosed shear pin safety.
Technical features
| Model | HP | Hitch | Boom OD | Yoke OD | Auger rpm | Gear ratio | Weight lbs | Ship lbs | Driveline 1 3/8" |
|---|---|---|---|---|---|---|---|---|---|
| PHD-100 | 15-25 | Limited Cat. 1 | 2 7/8" | 2 3/8" | 180 | 3:1 | 112 | 165 | ASAE cat. 2 shear bolt |
| PHD-200 | 18-40 | Cat. 1 | 3 1/2" | 2 7/8" | 180 | 3:1 | 200 | 235 | ASAE cat. 3 shear bolt |
| PHD-300 | 18-50 | Cat. 1 & 2 | 3 1/2" reinforced | 2 7/8" reinforced | 154 | 3.5:1 | 230 | 275 | ASAE cat. 3 shear bolt |
| PHD-400 | 18-90 | Cat. 1 & 2 | 3 1/2" reinforced | 2 7/8" reinforced | 135 | 4:1 | 260 | 305 | ASAE cat. 3 shear bolt |
Manuals
| Model | Language | Operator's manual | Parts manual |
|---|---|---|---|
| PHD-100, 200, 300 & 400 | English | ||
| PHD-100, 200, 300 & 400 | French | ||
| PHD-100, 200, 300 & 400 | Spanish | ||
| Post hole digger safety | English | - |
Call before you dig
811 is the free national before-you-dig service. Anyone who plans to dig should contact 811 or go to their state 811 center’s website before digging to request that the approximate location of buried utilities be marked with paint or flags so that you don’t unintentionally dig into an underground utility line. Learn more…






Chris Fallin –
Got this Phd-400 and 30″ auger. What a beast! Auger works perfect for tree root balls. Four star rating because the auger arrived with a few scratches, not a big deal but packaging could be improved.