1. Product Positioning & Core Characteristics
• Series Name: GM6 Series
• Part of a standardized product line from a hydraulic motor manufacturer (e.g., a proprietary brand). The number "6" may indicate design generation or specification tier.
• Low-Speed High-Torque (LSHT)
• Design Objective: Delivers high torque (up to thousands of N·m) at extremely low rotational speeds (<100 RPM), ideal for direct-drive heavy-duty or high-inertia loads.
• Comparative Advantage: Eliminates the need for a speed reducer, reducing energy loss and mechanical failure points compared to high-speed motor + gearbox combinations.
• Internal Five-Star Structure
• Operating Principle: Features an internal gerotor (star-shaped rotor) design with a fixed outer ring and a five-lobed inner rotor. Hydraulic fluid drives rotation through meshing gears.
• Advantages:
• Compact Design: Short axial length for space-constrained installations.
• High Volumetric Efficiency: Minimal leakage, suitable for high-pressure systems.
• Smooth Startup: No impact loads, ideal for precision control applications.
------
2. Key Technical Specifications (Example)
【表格】
Parameter Typical Range Explanation
Displacement 50–500 mL/rev Covers light- to heavy-duty needs across models.
Rated Pressure 250–350 bar Adapts to high-pressure hydraulic systems (e.g., construction machinery, injection molding).
Peak Torque 2,000–10,000 N·m Short-term overload capacity for shock loads.
Speed Range 0.5–200 RPM Superior performance at low speeds; efficiency slightly decreases at high speeds.
Efficiency Volumetric ≥92%, Total ≥85% Reduces energy loss and heat generation.
------
3. Typical Applications
• Construction Machinery:
• Slewing drives for excavators, track propulsion motors (replacing high-speed motors + reducers).
• Hoisting mechanisms for cranes requiring stable low-speed lifting.
• Industrial Automation:
• Clamping/molding units in injection molding machines for high-precision synchronization.
• Robot joint drives, replacing servo motors + gearboxes.
• Energy & Marine:
• Pitch control systems for wind turbines, adjusting blade angles at low speeds.
• Ship steering gears for precise rudder movement against water resistance.
------
4. Competitive Advantages
• Cost Efficiency:
• Reduces procurement and maintenance costs by eliminating a transmission stage vs. "high-speed motor + reducer" setups.
• Reliability:
• Simpler structure with fewer components, lowering failure rates compared to complex drive systems.
• Environmental Adaptability:
• Optional explosion-proof or corrosion-resistant coatings for harsh environments (mining, marine).
------
5. Selection Considerations
• Load Matching:
• Calculate required torque and speed based on actual operating conditions to avoid prolonged overload or underload.
• System Pressure:
• Ensure hydraulic system pressure does not exceed the motor’s rated value; add relief valves if necessary.
• Mounting Style:
• Supports flange-mounted or shaft-extended installations; verify compatibility with equipment interfaces.
