Type: Low‑speed high‑torque geroler hydraulic orbit motor with disc valve distribution, belonging to Eaton Char‑Lynn 6000 Series (6K Series). It delivers higher torque and higher pressure rating compared with the 4K Series.
- Continuous Torque: 1050 Nm (approx. 9280 lbf‑in)
- Weight: Approx. 38 kg (84 lb)
- High pressure & high torque design: 6000 Series with 210 bar continuous pressure, approx. 20% higher torque than 4K models at the same displacement
- Disc‑type valve distribution with automatic clearance compensation, featuring high efficiency, long service life and low starting pressure
- Heavy‑duty construction to withstand large radial and axial loads, ideal for wheel drive, winch and slewing drive applications
- Widely used in heavy‑duty low‑speed drives such as construction machinery, loaders, drilling rigs, forestry equipment and agricultural machinery
112-1089-006 Hydraulic Orbit Motor: Technical Analysis and Applications in Hydraulic Systems
1. Product Positioning and Core Functions
The112-1089-006 Hydraulic Orbit Motoris a high-performancehydraulic orbit motor, a specialized type ofhydraulic motordesigned for low-speed, high-torque applications withinhydraulic systems. Its primary function is to convert hydraulic energy (pressure and flow) from a hydraulic pump into mechanical energy (torque and rotational speed), enabling precise and stable rotational motion of loads.
This model employs agerotor design(internal gear ring meshing with an external gear) combined with planetary reduction principles to form sealed volume chambers, achieving low-speed, high-torque output. Its compact structure, small size, and lightweight design allow direct integration into hydraulic systems without additional reduction gears, significantly simplifying the transmission mechanism.
2. Technical Specifications and Performance Advantages
【表格】
Parameter Category Typical Values for 112-1089-006 Industry Comparison Advantages
Displacement 50–1250 mL/rev (customizable) Covers light- to heavy-duty scenarios with broad adaptability
Rated Pressure 20–25 MPa (peak pressure up to 30 MPa) Stable operation under high-pressure conditions with strong shock resistance
Torque Output Continuous torque ≥500 N·m (peak torque ≥800 N·m) Far exceeds torque output of same-displacement gear motors, meeting heavy-load startup demands
Speed Range 0–500 rpm (exceptional low-speed stability) Avoids high-speed vibrations, suitable for precision control applications
Efficiency Volumetric efficiency >85%, mechanical efficiency >90% Low energy loss, minimal heat generation, extended service life
Structural Features Double-tapered roller bearings, end-face oil distribution design Strong resistance to radial/axial forces with automatic wear compensation
3. Applications in Hydraulic Systems
The112-1089-006 Hydraulic Orbit Motoris widely used in the followinghydraulic systemscenarios, leveraging its low-speed, high-torque characteristics to address limitations of traditional motors:
1. Construction Machinery
• Rotary mechanisms in excavators/loaders: Replaces conventional motors for smooth, vibration-free low-speed rotation, enhancing operational precision.
• Log grabber/clamshell bucket drives: Models like Shanghai Shuangxu’sBH-630 Hydraulic Motor(630 mL/rev displacement, 25 MPa rated pressure) are tailored for timber handling, delivering high torque with excellent low-speed stability.
2. Marine Machinery
• Steering gears and deck cranes: Maintains stable torque output under wave impact, ensuring precise course control.
3. Industrial Equipment
• Injection molding machine mold opening/closing: Provides sustained high torque to prevent mold deformation, improving product quality.
• Metallurgical rolling mill drives: Multi-stage planetary transmission supports extremely low speeds matched with ultra-high torque, meeting rolling process requirements.
4. Agricultural Machinery
• Threshing drum drives in combine harvesters: Adapts to dusty environments with low-speed, high-torque performance to prevent blockages.
4. Technical Comparison and Selection Guidelines
【表格】
Characteristic Hydraulic Orbit Motor Gear Motor Vane Motor
Torque Output High torque density, strong heavy-load startup capability Torque pulsation issues, prone to stalling at low speeds High-speed, low-torque performance; efficiency drops at low speeds
Efficiency Volumetric efficiency >85%, low mechanical losses Poor sealing, low volumetric efficiency High leakage, unstable at low speeds
Structural Compactness Small size, direct load connection Requires additional reducers, bulky Complex structure, high inertia
Typical Applications Heavy-duty rotation, low-speed operations High-speed, light-duty tasks (e.g., fan drives) Frequent reversal scenarios in automation equipment
Selection Recommendations:
• Prioritize the112-1089-006 Hydraulic Orbit Motorfor systems requiringlow-speed, high-torque stability(e.g., log grabbers, steering gears).
• Opt for gear or vane motors forhigh-speed, light-duty applications(e.g., fan drives) to reduce costs.
5. Industry Case Studies and Validation
• Mine Hoist Application: A gerotor motor with 25 MPa rated pressure and 99 mL/rev displacement delivered stable 385 N·m torque, resolving high-load startup shock issues and extending equipment lifespan by 30%.
• Injection Molding Integration: A modular design integrated the motor, brake, and planetary gearbox into a drum, achieving a total displacement of 3620 mL/rev and 7885 N·m torque for metallurgical rolling mills requiring high reduction ratios.
6. Conclusion
The112-1089-006 Hydraulic Orbit Motorstands out for itslow-speed, high-torque performance, high efficiency, and compact design, making it an ideal choice for heavy-duty rotational applications inhydraulic systems. By optimizing gear geometry, oil distribution mechanisms, and bearing structures, it outperforms traditional gear and vane motors in critical areas such as torque density, efficiency, and reliability. Its widespread adoption across construction, marine, industrial, and agricultural sectors underscores its versatility. Selection should align with load characteristics, speed requirements, and environmental conditions to maximize system performance and longevity.
