High-Torque Hydraulic Motor for Rock Drills This hydraulic motor is engineered to drive the rotary and feed mechanisms of hydraulic rock drills, converting hydraulic fluid pressure into high-torque rotational motion. Its axial piston design ensures efficient power transmission, making it suitable for heavy-duty mining and construction applications where consistent performance under load is critical.
Key Performance Attributes
Power & Efficiency:
With a rated power of 11 kW (14.75 hp) and 92% overall efficiency, it minimizes energy loss even at maximum load. The motor delivers 68 Nm of continuous torque at 1800 rpm, enabling drilling through hard rock formations (80-200 MPa unconfined compressive strength) .
Its variable displacement capability allows speed adjustment from 500 to 1800 rpm, adapting to different drilling conditions without sacrificing performance.
Durability & Construction:
Hardened alloy steel pistons (17-4 PH stainless steel) resist wear and corrosion, while the lightweight aluminum alloy housing (EN AW-6061) provides excellent heat dissipation. These materials extend service life to 4,000 operating hours in standard conditions .
The IP67 protection rating ensures resistance to dust ingress and temporary water immersion (up to 1m for 30 minutes), making it reliable in underground and wet mining environments .
Operational Compatibility:
Compatible with mineral oil, synthetic hydraulic fluids, and water-glycol mixtures, it integrates seamlessly with standard rock drill hydraulic systems. SAE C mounting flanges and ISO 3019-2 ports simplify installation and replacement .
The -25°C to +90°C operating range ensures stability in extreme temperatures, from cold arctic mining sites to hot desert quarries.
Applications
Primary Use: Driving rotary drill bits and feed mechanisms in medium to heavy-duty hydraulic rock drills.
Mining & Construction: Suitable for tunneling, quarrying, and mineral exploration where high torque and reliability are required.
