QJM Series — Inner Cam-Ring
Short Description:
High Torque Density. Long Life. Field-Proven.The QJM Series adopts an inner cam-ring (cam-lobe) radial-piston concept—celebrated for very high torque density, smooth ultra-low-speed motion, and rugged longevity. It’s the architecture made famous by French cam-motor leaders in mobile/off-road markets, with modular options for brakes, valving, and sensors.
• High torque density: outstanding torque-to-size ratio for compact yet powerful drives.
• Ultra-low speed capability: stable, cog-free motion even below 1 rpm.
• Proven durability: withstands shock loads, contamination, and continuous heavy-duty cycles.
• Modular design: interchangeable options for covers, ports, bearings, brakes, and valve blocks.
• Versatile mounting & shaft options: parallel key, spline, tapered shafts available.
• Long service life: optimized lubrication and robust cam-lobe geometry reduce wear.
• Displacement Range: wide selection from medium to very large sizes (liters per revolution).
• Torque Output: extremely high torque at low speed; continuous ratings in the tens of thousands of Nm.
• Working Pressure: continuous up to ~350 bar, peaks above 400 bar.
• Speed Range: from creeping speeds (≤1 rpm) to a few hundred rpm depending on displacement.
• Power Output: scalable, with high efficiency across the operating range.
• Options: integrated brakes (parking or dynamic), valve blocks (relief, flushing, anti-cavitation), heavy-duty bearing supports, speed sensors.
• Mobile Machinery: wheel and track drives, forestry harvesters, drilling rigs, construction vehicles.
• Industrial: shredders, crushers, recycling equipment, material handling systems.
• Marine & Offshore: winches, anchor handling, auxiliary drives in harsh salt-mist conditions.
• Heavy-Duty Handling: lifting systems, slewing drives, propulsion assistance.