Overview of DTH Hammer Fuel Consumption
As the "fuel guzzler" among drilling equipment, the fuel consumption of a Down-the-Hole (DTH) hammer depends primarily on the equipment model and operational intensity:

Small DTH Hammers (Hole Diameter: 80–100 mm): Approx. 8–12 liters/hour

Medium DTH Hammers (Hole Diameter: 130–150 mm): Approx. 15–20 liters/hour

Large DTH Hammers (Hole Diameter: >200 mm): Can reach 25–30 liters/hour

These figures represent typical values ​​observed in rock formations of medium hardness under normal operating conditions.

Five Major Factors Influencing Fuel Consumption
Rock Hardness: Drilling through granite consumes 20% more fuel than drilling through limestone.

Drilling Depth: Fuel consumption increases significantly once the drilling depth exceeds 15 meters.

Equipment Maintenance: A clogged air filter can increase fuel consumption by 5–8%.

Operational Technique: Judicious control of the impact frequency can save up to 10% on fuel.

Ambient Temperature: Operating in sub-zero temperatures increases fuel consumption by 15%.

Practical Tips for Saving Fuel
Want your DTH hammer to "drink" less fuel? Try these methods:

Regularly clean the air filter.

Adjust the impact frequency according to the rock formation.

Avoid prolonged idling.

Select hydraulic oil with the appropriate viscosity.

Replace worn drill bits promptly.

Maintain a proper drilling angle.