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The DRILLNOVA Bolt-On Hole Opener is a configurable HDD bore-enlargement tool with field-replaceable roller-cone cutter assemblies. Interchangeable cutting structures allow the tool to be matched to soft, mixed, medium-hard or hard formations while the bolted mounting system simplifies cutter inspection and replacement between runs.
The DRILLNOVA Bolt-On Hole Opener enlarges an HDD pilot bore with replaceable roller-cone cutters. Its modular cutter pockets support rapid maintenance and formation-matched cutter selection, making the tool suitable for contractors who need one serviceable platform across changing ground conditions.
Formation-strength bands are selection guidance, not a substitute for a project review. Confirm cutter structure, bearing/seal arrangement, connection, pilot-hole size and hydraulic layout before manufacture.
Review standard Diamond Compact PDC Bit configurations below. Final dimensions and connections are confirmed during application review.
Verify connection compatibility, cutter retention, pilot-hole clearance and make-up requirements before operation.
Inspect cutter rotation, inserts, bearings, bolts, locks, pockets and body protection after every run.
Protect cutters, threads and retaining hardware from impact, moisture and contamination.
It is designed to enlarge HDD pilot bores where replaceable roller-cone cutters and formation-specific cutting structures are required.
The platform covers soft through very hard formations when fitted with the appropriate milled-tooth, chisel, conical or spherical cutting structure. Final selection depends on strength, abrasiveness, fracture condition and pilot-hole quality.
Yes. The bolted pocket system is designed to allow cutter replacement without welding. The tool must be secured, cleaned and inspected, and the specified retention components and tightening procedure must be followed.
Provide the pilot-hole diameter, required finished diameter, formation description or strength, abrasiveness, drill model, connection, available torque/pullback, fluid capacity and any dimensional restrictions.
They are within the stated product range but are not detailed in the catalog’s standard model table. DRILLNOVA should confirm these sizes as project-specific configurations before publication or quotation.
Check cutter rotation, teeth or inserts, bearings and seals, bolts, locking parts, cutter pockets, hardfacing, body welds, fluid ports and threaded connections.
Yes. Connection, cutter series, cutter count, cutting structure and hydraulic layout can be selected after application review.
Share your target diameter, formation, pilot-hole size, rig connection and operating limits. DRILLNOVA will review the cutter structure, cutter count, hydraulics and tool interfaces for your project.
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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