



3-Wing Concave Air Drilling Combination Bit A three-wing concave combination bit designed for air drilling systems and customized mining or engineering boreholes. Key Advantages Open three-wing layout provides large cuttings passages. Concave structure supports stable guidance. Reinforced steel body and wear-resistant cutting elements support demanding conditions. Recommended Applications Air drilling systems Mining and engineering boreholes Custom drilling equipment Available Specifications Current reference model: 80 mm. Other sizes and equipment connections require project confirmation. OEM/ODM Customization Diameter, thread connection, cutter layout, color and packaging can be customized. Please provide the target formation, drilling method, required connection and order quantity before production.
Open spaces between three wings support high-volume air flow and cuttings removal.
The recessed center supports stable tracking during drilling.
The steel body and cutting elements can be configured for the actual air-drilling system.

| Product type | Three-wing concave air-drilling combination bit |
|---|---|
| Cutting structure | Open three-wing concave combination structure with alloy/PDC cutting elements |
| Primary applications | Air drilling, mining and customized engineering boreholes |
| Recommended formations | Formation and equipment matching must be confirmed before production |
| Size | 80 mm · Custom Size |
| Connection | Threaded connection matched to the customer's drill string |
| Customization | Diameter, connection, cutter layout, waterways, hardfacing, color, logo and packaging |
Performance depends on formation, rig parameters, flushing and operating practice. Final configuration should be confirmed by the technical team.
Send diameter, thread/connection, formation description, target depth, rig model, flushing method and quantity. Photos or geological reports improve configuration accuracy.
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