Product Application

Piling & Foundation Drilling

For Holes 3½″ to 48″ (89 to 1219 mm)

Hammers, Bits & Expertise for Piling & Foundation Drilling

Numa’s piling and foundation products outdistance competitive offerings in both speed and longevity. For 39 years and counting, customers rely on Numa for industry leading hammers and bits, overburden systems, ring bits, reverse circulation, horizontal drilling systems, and much more. 

Piling & Foundation Drilling

Small Conventional

3 ½” – 10″
89 to 254 mm

Large Conventional

9 ⅞” – 48″
251 to 1219 mm

Reverse Circulation

5 ¼” – 36″
133 to 914 mm

Overburden Bits

5 ⅛” – 48″
130 to 1219 mm

Utility Pole Rock Drills

11 ⅞” – 36″
302 to 914 mm

Hole Openers

6″ – 24″
152 to 610 mm

Casing Ring Bits

16″ – 48″
406 to 1219 mm

Impact Ring Bits

10 ¾” – 50 ½”
273 to 1283 mm

Piling & Foundation Drilling


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Hollywood Water Quality Improvement Project

Location: Hollywood, California USA

Rock Drilling Products to Meet Your NEeds

Our decades of drilling industry experience has resulted in 110+ products designed for a wide range of construction applications including:

  • Piles 
  • Boreholes
  • Caissons
  • Micro-Piles & Mini-Piles
  • Tiebacks
  • Soil Nail
  • Piers
  • Shafts
  • Anchors
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Numa is the world’s leading drilling technology provider, with the highest value in products, performance and service in the entire drilling industry.

What really sets Numa apart is our experienced team of regional managers, engineers, and technicians which are second to none in the industry. Many of our staff have 20 to 30 years of experience supporting drillers on all types of projects. This critical expertise allows us to collaborate with customers to design and manufacture highly specialized products that other providers just don’t have the experience, flexibility, or capability to do.

One specialized product for drilling in overburden formations is our Super Jaws® Overburden Bits. Super Jaws delivers unmatched performance for simultaneous drilling and casing. Its unique design has wings that extend out beyond casing to drill a full diameter hole. Upon completion, the wings retract and all tooling returns to the surface while leaving the casing in place. No expensive tools are left down the hole and no starter casing teeth are required, saving time and money. 

Our Casing Ring Bit System is a complementary product to our Super Jaws® Overburden Bits and Impact Ring Bit Systems®. It consists of a pilot bit, casing shoe, and heavy-duty ring bit and is available for both drill through and non-drill through applications.

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