1. Product Positioning & Series Classification
• OMM Orbital Motor
• Positioning: Economical low-speed, high-torque gerotor motor for general industrial applications.
• Features:
• Modular design supporting single/double-row gear configurations (e.g., OMM 300 series).
• Displacement range: 50–1000 cm³/rev (up to 2000 cm³/rev in some models).
• Maximum pressure: 250 bar (continuous), peak pressure up to 280 bar.
• Speed range: 0–500 rpm (optimized for low-speed stability).
• Typical Applications: Agricultural machinery (harvesters, sprayers), construction equipment (mini excavators), logistics (forklift steering).
• OMP Orbital Motor
• Positioning: High-performance reinforced gerotor motor designed for heavy-duty and harsh environments.
• Features:
• Enhanced bearing system supporting combined axial/radial loads (e.g., OMP 500 series).
• Displacement range: 100–3000 cm³/rev (large-displacement models for heavy equipment).
• Maximum pressure: 300 bar (continuous), peak pressure up to 350 bar.
• Speed range: 0–300 rpm (prioritizing high-torque output).
• Typical Applications: Mining machinery (drills, crushers), marine equipment (winches), construction machinery (concrete pump trucks).
------
2. Core Design Differences
【表格】
Parameter OMM Orbital Motor OMP Orbital Motor
Gear Structure Single/double-row gerotor gear pair Multi-row composite gerotor (3+ rows)
Bearing System Roller bearings (standard load) Crossed roller bearings (high radial load)
Seal Design Dual-lip rubber seals (IP65) Metal-face seals + V-rings (IP67)
Cooling Method Natural cooling (optional fan) Forced oil cooling (high-temp operations)
Mounting Interface SAE A/B/C flanges (standard) Custom flanges (non-standard support)
------
3. Performance Comparison & Selection Guide
(1) Torque & Efficiency
• OMM:
• Rated torque: 500–5000 Nm (model-dependent).
• Mechanical efficiency: 85%–88% (standard conditions).
• Best for: Light-duty equipment requiring frequent starts/stops or variable speeds.
• OMP:
• Rated torque: 2000–15000 Nm (large models up to 25000 Nm).
• Mechanical efficiency: 88%–90% (optimized gear engagement).
• Best for: Heavy machinery under continuous high loads.
(2) Environmental Adaptability
• OMM:
• Operating temperature: -20°C to +60°C (standard hydraulic oil).
• Contamination tolerance: NAS 6-class oil compatibility (requires regular filtration).
• OMP:
• Operating temperature: -40°C to +80°C (low-temp startup options available).
• Contamination tolerance: NAS 9-class oil compatibility (built-in magnetic filters).
(3) Maintenance & Lifespan
• OMM:
• Recommended oil change interval: 2000 hours (mineral oil).
• Expected lifespan: 8000–12000 hours (duty-cycle dependent).
• OMP:
• Recommended oil change interval: 4000 hours (synthetic oil).
• Expected lifespan: 15000–20000 hours (heavy-duty operations).
------
4. Typical Application Cases
Case 1: Agricultural Harvester (OMM 300 Series)
• Requirements: Low-speed, high-torque drive for header lifting system.
• Selection Rationale:
• Displacement: 800 cm³/rev (matches hydraulic pump flow).
• Pressure: 180 bar (meets header load).
• Interface: SAE B flange (direct replacement for existing models).
• Results: 40% reduction in failure rate, 15% lower energy consumption.
Case 2: Mining Drill Rig (OMP 500 Series)
• Requirements: Continuous drilling under impact loads.
• Selection Rationale:
• Displacement: 2500 cm³/rev (high-torque output).
• Seals: Metal-face design (prevents rock debris intrusion).
• Cooling: Forced oil cooling (adapts to high-temp mine environments).
• Results: 25% improvement in drilling efficiency, 3000-hour maintenance interval.
------
5. Key Selection Steps
1. Define Operating Parameters:
• Load torque (Nm), working speed (rpm), system pressure (bar).
• Ambient temperature, oil cleanliness level (NAS class).
2. Match Displacement & Pressure:
• Formula: Displacement (cm³/rev) = Flow (L/min) × 60 / Speed (rpm).
• Example: Flow = 100 L/min, Speed = 200 rpm → Displacement = 30 cm³/rev (select nearest standard model).
3. Verify Compatibility:
• Check mounting dimensions (shaft diameter, flange hole spacing).
• Confirm hydraulic interface type (NPT/BSP threads).
4. Consult Manufacturer Support:
• Provide load spectrum data for customized recommendations.
