DHD3.5-90 DTH Drill Bit
90 mm DTH Drill Bit for Quarrying & Hard-Rock Drilling
The KEENOVA DHD3.5-90 DTH drill bit is a 90 mm down-the-hole drill bit designed for use with DHD3.5-class DTH hammers in quarrying, construction and hard-rock drilling applications.
Available with different face designs and carbide button configurations, it can be matched to different rock formations and drilling requirements to achieve a practical balance of penetration, stability and wear resistance.
Key Features
90 mm nominal diameter
Compatible with DHD3.5 DTH hammers
Multiple face design options
Various carbide button configurations
Optimized flushing for efficient cuttings removal
Robust bit body for demanding drilling conditions
Suitable for granite, hard rock and quarry drilling
Face Options
Flat Face
General-purpose configuration offering a balanced combination of penetration, stability and wear resistance.
Convex Face
Designed for efficient penetration in suitable hard-rock formations.
Concave Face
Designed to support drilling stability and effective flushing in suitable formations.
Button Configuration Options
The DHD3.5-90 is available with different carbide button arrangements, including:
Spherical buttons — balanced wear resistance and drilling performance
Ballistic buttons — enhanced penetration in suitable formations
Mixed configurations — optimized balance between penetration and durability
Different button layouts and densities — selected according to rock hardness and abrasiveness
Typical Applications
Specification
| Item | Specification |
|---|
| Model | DHD3.5-90 |
| Type | DTH Drill Bit |
| Diameter | 90 mm |
| Compatible Hammer | DHD3.5 |
| Face Options | Flat / Convex / Concave |
| Button Options | Spherical / Ballistic / Mixed |
| Application | Quarrying & Hard-Rock Drilling |
Face and button configurations can be selected according to the specific rock formation and drilling conditions.
Need the Right Configuration?
Share your rock type, drilling diameter, hammer model and application with KEENOVA. We can recommend a suitable face and button configuration for your specific drilling requirements.
KEENOVA — DTH Drilling Tools for Quarrying & Construction.