For Holes 3⅞” to 10” (98 to 254 mm)
Hammers, Bits & Expertise for HDD Rock Drilling
Horizontal directional drilling contractors rely on Numa’s advanced HDD hammers, HDD drill bits, and sonde housings for quick, reliable performance. Our solutions excel in challenging rock formations, overburden, and loose soil strata, meeting the demands of horizontal directional drilling applications. Numa’s HDD tools, including HDD hammers, bits, side load sonde housings, bent subs, and adaptors, are designed to handle various drilling challenges, making them an essential part of any HDD driller’s toolkit.
As a leading provider of rock drilling technology, Numa offers unmatched quality, performance, and service, making our HDD hammers and bits the top choice in the industry. Our HDD equipment is engineered for outstanding durability and efficiency, ensuring drillers can achieve their goals with confidence in their tools.
Comprehensive HDD Solutions by Industry Experts
Numa’s HDD experts have years of experience with horizontal drilling systems, fluids, bits, reamers, rock tools, swivels, and more. Available onsite or by phone, our drilling experts support customers with the insight to maximize their investment in the best HDD rock drilling equipment on the market.
From the toughest rock to unconsolidated formations, Numa’s HDD tools are crafted to meet diverse and demanding drilling requirements. Whether you’re investing in HDD hammers,bits, or other HDD tools for a new project or upgrading existing equipment, Numa provides the performance and reliability every HDD driller needs.
Drilling Products To Meet your Needs
Benefits of Numa’s innovative HDD products include:
- Advanced steerability for precise drilling operations
- Exceptional penetration rates, ideal for complex drilling conditions
- A user-friendly, field-maintainable design
- Reduced air requirements to lower cost per foot drilled
- Efficient and durable internal components for long-lasting performance
- High-frequency operation that minimizes vibration
HDD
PRODUCTS
Projects
Fiber Optic Conduit Installation
Location: Tecolotito, New Mexico
Fiber Optics Installation Under Interstate Highway
Location: Raleigh, North Carolina USA
Gas Line HDD Project
Location: Kentucky & Tennessee USA
HDD Crossing Project
Location: Frankfort, Kentucky USA
Underground Power Supply
Location: Amsterdam, New YorkFeatured Video
FAQs about Numa HDD Products
How do Numa HDD hammers compare to mud motors for drilling in hard rock formations?
HDD hammers generally provide faster penetration rates and better control in consolidated rock compared to mud motors, which can struggle with torque and heat buildup in abrasive conditions. Numa’s high-frequency design also produces smaller cuttings that are easier to evacuate. For projects transitioning between soil and rock, many contractors use hammers for the rock sections and motors elsewhere. Contact our team for project-specific recommendations.
Can Numa HDD hammers be used with popular directional drill rigs like Vermeer or Ditch Witch?
Yes. Numa HDD systems are compatible with most major directional rigs via standard API connections and adaptors. They integrate well with common locating systems (DCI, Subsite, etc.). We recommend verifying thread compatibility and pullback capacity for your specific rig model. Browse our full HDD product lineup or request a compatibility review.
How do penetration rates and cost-per-foot with HDD hammers compare to traditional methods in medium-to-hard rock?
Contractors often see significantly higher ROP and lower overall cost-per-foot with air-powered hammers versus mud motors or roller bits in competent rock, thanks to reduced vibration, better hole cleaning, and less wear on the drill string. Actual results depend on geology, but our tools are engineered for efficiency in these conditions. Reach out for case-specific data from similar projects.
What maintenance is required for Numa HDD hammers to maximize lifespan in the field?
Field-maintainable design allows quick checks of internals, proper lubrication at every connection, and regular bit inspection. Store hammers vertically and use the recommended choke for your air volume. Following these practices, many operators report excellent durability even in abrasive formations.