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Posthole Digger

Built for dependable drilling performance

Whether you're putting in a fence, constructing a pole barn or planting trees, you can rely on the durability of the New Holland 906 posthole digger. The 906 drills precise-diameter holes quickly and easily. Choose the model that matches your needs:

  • Light duty
  • Medium duty
  • Heavy duty

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Drilling depth and auger engagement are controlled using tractor hydraulics and PTO right from your tractor seat.

Square tubular steel construction handles the torsional stress of a turning auger.

Machined, hardened steel gears transfer power smoothly from tractor to auger.

Additional features that provide dependable drilling performance:

  • Hardened steel input and output shafts that turn on tapered roller bearings
  • Universal joints with grease fittings
  • Gearbox that runs in oil

An assortment of augers, for drilling holes from six to 24 inches in diameter and up to 42 inches deep, is available.

Optional nine- or 14-inch auger extensions increase the 42-inch digging depth to 51 or 56 inches.

Double or semi-double flighting allows you to match the auger to the job and soil conditions.

Replaceable cutting edges and auger points allow you to keep your 906 posthole digger performing like new, even after years of use.

Reversible hitch pins on the medium- and heavy-duty models allow you to use both models with Category I or Category II three-point hitch tractors.

Optional down pressure kit for the heavy-duty model provides extra digging force for drilling in hard and heavy soils.

Optional parking stand allows for easy hookup and storage.


Models Maximum Recommended Tractor PTO hp Three-point Hitch Requirement
Heavy duty up to 90 PTO hp Category I or II
Light duty up to 35 PTO hp Category l
Medium duty up to 55 PTO hp Category I or II

906 Specifications
MODEL 906 LIGHT DUTY 906 MEDIUM DUTY 906 HEAVY DUTY
Hitch category I I or II I or II
Input rpm on PTO 540
Max. tractor PTO horsepower 35 hp 55 hp 90 hp
Drive protection shear bolt
Output shaft diameter, in. (mm) 2 (50.8)
Maximum digging depth (less extensions), in. (mm)
Without extensions 42 (1066.8)
With 9-inch extension 51 (1295.4)
With 14-inch extension 56 (1422.4)
Square steel tube diameter
Boom, in. (mm) 3 (76.2)
Mast, in. (mm) 3.5 (88.9)
Down pressure kit n/a n/a optional
Weight, lbs. (kg) 235 (106.6) 260 (117.9) 335 (152.0)
AUGERS
Semi-double flight, in. (mm) 6 (152.4)
  9 (228.6)
  12 (304.8) 12 (304.8)
Double flight, in. (mm) 9 (228.6)
  12 (304.8) 12 (304.8)
  14 (355.6) 14 (355.6)
  18 (457.2) 18 (457.2)
      24 (609.6)