Heavy-Duty Hydraulic Motor for Hydraulic Rock Drills This hydraulic motor is engineered to drive the rotational and feed mechanisms of hydraulic rock drills, converting hydraulic fluid pressure into reliable mechanical power for efficient rock fragmentation. As an external gear type, it delivers consistent torque output and smooth operation, even under the high loads and vibrations typical in mining and construction applications.
Key Performance Attributes
Power & Efficiency:
With a rated power of 8.5 kW (11.4 hp) and 88% volumetric efficiency, it minimizes energy loss, ensuring optimal use of hydraulic system pressure. The motor generates 48 Nm of continuous torque at 1500 rpm, enabling it to handle drilling through medium to hard rock formations (50-160 MPa unconfined compressive strength) .
Its precision-machined gear set ensures uniform power transmission, reducing vibration by 18% compared to standard motors, which extends the lifespan of connected drill components .
Durability & Construction:
Hardened alloy steel gears (20CrNiMo) with a surface hardness of HRC60-62 resist wear, while the cast iron housing (HT300) provides excellent rigidity and heat dissipation. These materials support a service life of 3,000+ operating hours in standard conditions .
The IP65 protection rating safeguards internal components against dust ingress and low-pressure water jets, making it suitable for both underground and outdoor rock drill operations .
Operational Compatibility:
Compatible with mineral oil and synthetic hydraulic fluids, it integrates seamlessly with hydraulic rock drill systems. SAE B mounting flanges and ISO 3019 ports simplify installation and replacement, reducing downtime during maintenance .
The -20°C to +80°C operating range ensures performance stability in extreme environments, from cold mountain quarries to hot desert mining sites.
Applications
Primary Use: Driving rotation and feed mechanisms in medium-duty hydraulic rock drills.
Mining & Construction: Suitable for quarrying, tunneling, and mineral exploration where reliable torque and durability are required.
