Replaceable Roller Bit
DRILLNOVA Replaceable Roller Bits are field-serviceable cutter modules for HDD and microtunneling reaming tools. A slot-pocket mounting system with three bolts and spring locks supports secure
DRILLNOVA hard-rock tooling is engineered for HDD projects where high formation strength, abrasiveness and changing rock conditions demand dependable cutting performance. From pilot-hole drilling to staged reaming, our roller-cone tools deliver effective rock-breaking action, stable operation and serviceable configurations for demanding underground applications.
DRILLNOVA Replaceable Roller Bits are field-serviceable cutter modules for HDD and microtunneling reaming tools. A slot-pocket mounting system with three bolts and spring locks supports secure
DRILLNOVA Tricone Bits for HDD pilot-hole drilling, available with TCI or milled-tooth cutting structures, sealed journal bearings and common API REG connections in standard 5.5–8.5 inch
DRILLNOVA Fixed Type Hole Opener with welded steel-tooth or TCI roller-cone cutters for stable HDD bore enlargement. Standard 8–40 inch configurations and project-matched connections are available.
DRILLNOVA Bolt-On Hole Opener with field-replaceable roller-cone cutters for HDD bore enlargement in soft to hard formations. Standard and project-specific sizes are available from 12 to
Use the factors below to identify whether a tricone bit, replaceable roller bit or TCI hole opener best matches the formation, bore plan and available drilling equipment.
Review the expected rock strength, abrasiveness, fracture pattern and any changes between formation layers. These conditions influence cutter structure, insert geometry and the most suitable tool configuration.
Confirm the pilot-hole diameter, required final bore size and planned reaming stages. A suitable diameter progression helps manage cutting load, torque and cuttings removal.
Match the tool to the rig’s available torque, thrust, pullback capacity and recommended rotational speed. Balanced operating parameters support efficient cutting and help limit unnecessary wear.
Verify the connection type, tool dimensions and compatibility with the drill string, reaming assembly and existing jobsite equipment before deployment.
DRILLNOVA checks each hard-rock drilling and reaming tool before shipment. Inspection focuses on cutter condition, critical dimensions, connection accuracy and overall assembly quality to support reliable field performance.
Inspect roller cones and carbide inserts for correct placement, secure retention and visible surface defects.
Confirm smooth cone rotation and check the bearing or sealing system according to the selected cutter configuration.
Verify cutting diameter, gauge dimensions and key assembly measurements against the approved specification.
Check thread profile, connection dimensions, cutter installation and critical welded or fastened areas for correct fit and alignment.
Compare replaceable roller bits, tricone bits and TCI hole openers after the formation profile, pilot diameter and reaming plan have been established.
Send us your formation report, bore diameter, crossing length and rig information. Our team will help you identify a suitable drilling or reaming configuration.
Tell us about your ground conditions, bore requirements or tooling needs. Our HDD tool specialist will review your information and recommend the appropriate next step.
For faster review, include the tool type, bore diameter, ground conditions, drill rig and required connection when available.
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