Numa Adds HDD 80 to Product Line

Numa announced the addition of the HDD 80 to its HDD Drilling Systems product line. This new product will further extend the range of Numa’s durable and dependable HDD products and provide drillers with more options. 

“Numa continues to design new products to tackle the challenges drillers face,” said Numa President Ralph Leonard. “Our high-quality, ‘Made in the USA’ HDD products provide the right balance of performance and dependability without sacrificing tool life.”

The Numa HDD 80 Drilling System consists of a variety of HDD components including hammer, bits, side load sonde housing, bent subs, and adaptors which are capable of drilling holes 9¾- to 10-in. (248- to 254-mm) in diameter. Some of the many benefits Numa touts for the HDD 80 hammer include: improved steerability, fast penetration rate, simplified field maintenance, reduced air requirements, and lower overall cost per foot.

Numa purposely designed its HDD hammers to drill longer in difficult rock conditions. Furthermore, a single bore design allows for a maximum bore diameter in conjunction with providing optimum life against abrasion. The full line of Numa’s HDD Drilling Systems is made up of the models indicated below:

  • HDD 35 for drilling holes 3⅞- to 4-in. (98- to 102-mm) in diameter.
  • HDD 40 for drilling holes 4¾- to 5-in. (121- to 127-mm) in diameter.
  • HDD 50 for drilling holes 5- to 6⅛-in. (146- to 156-mm) in diameter.
  • HDD 60 for drilling holes 7- to 7½-in. (178- to 191-mm) in diameter.
  • HDD 80 for drilling holes 9¾- to 10-in. (248- to 254-mm) in diameter.


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