Guangdong Yanhui Hydraulic Co., Ltd. is one of the leading manufacturers and suppliers of mpj motor in China. We warmly welcome you to wholesale bulk mpj motor for sale here from our factory. If you have any enquiry about pricelist and quotation, please feel free to email us.
Product Overview
▔▔The MPJ Motor series is a specialized line of high-precision proportional hydraulic control motors designed for electro-hydraulic servo and proportional systems. Positioning itself as a premium industrial-grade hydraulic actuator, the MPJ Motor delivers accurate torque, speed, and continuous rotary motion control under demanding pressure conditions. It is engineered specifically for dynamic closed-loop hydraulic control applications, where real-time responsiveness, minimal deadband, and stable low-speed torque are critical.
Key Advantages
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- Series + Type + Core Function: MPJ Series High-Torque Orbital Hydraulic Motor delivering ultra-precise speed and rotational control.
- Superior volumetric and mechanical efficiency for minimized energy loss.
- High-pressure shaft seal system design eliminating the need for external drain lines in lower pressure applications.
- Smooth low-speed operation with stable, non-jerky rotation even at low RPM.
Technical Specifications
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| Parameter | Unit | Value / Range |
| Displacement Options | cm³/rev | 50 / 80 / 100 / 125 / 160 / 200 / 250 / 315 / 400 |
| Max. Continuous Working Pressure | bar | 175 |
| Max. Intermittent Working Pressure | bar | 200 |
| Max. Peak Pressure | bar | 225 |
| Rated Flow Rate | L/min | 40 – 75 (model dependent) |
| Operating Temperature Range | °C | -30 to +80 |
| Fluid Viscosity Range | mm²/s (cSt) | 20 to 75 (Optimal), 10 to 800 (Permissible) |
| Hysteresis | % | ≤ 1.5 |
| Response Time | ms | ≤ 25 |
| Maximum Speed | rpm | 150 – 800 (model dependent) |
Configuration Options
▔▔- Structure: Compact geroler/gerotor gearing design with heavy-duty needle roller bearings for enhanced radial load capabilities.
- Control Method: Hydraulic fluid-driven rotary valve with dynamic distribution.
- Feedback Options: Integrated incremental encoder or speed sensor port options available for dynamic close-loop control systems.
- Rated Flow Settings: Configurable port orifice designs to match custom flow inputs.
- Mounting Flanges: Standard SAE 2-bolt flange, SAE 4-bolt flange, and Magneto flange mounts.
- Porting Interfaces: G 1/2, 7/8-14 UNF, or M18x1.5 threading options; side or rear port orientation.
- Electrical Configuration: Optional speed sensors with Deutsch or M12 connector interfaces.
Key Materials and Components
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- Shaft Seals: Fluorocarbon (FKM / Viton) shaft seals providing high temperature resistance and compatibility with synthetic hydraulic fluids.
- Drive Link & Stator Assembly: Nitrided high-strength alloy steel ensuring exceptional surface hardness, reduced wear, and high torque resistance.
- Needle Roller Bearings: Premium bearing steel with optimized dynamic load ratings to absorb high external radial and axial forces.
- Casing Material: High-density ductile cast iron (QT500-7) offering superior pressure resistance, structural rigidity, and vibration dampening.
Packaging and Transport Protection
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- Anti-Rust Treatment: Internal chambers are coated with rust-inhibitor oil, and oil ports are sealed with heavy-duty plastic plugs.
- Moisture & Corrosion Protection: Each motor is vacuum-sealed in an anti-static, moisture-proof VCI (Vapor Corrosion Inhibitor) plastic film.
- Shock Mitigation: Individual units are encapsulated inside custom-molded EPE foam shock-absorption trays.
- Bulk & Export Packaging: Units are packed into heavy-duty corrugated cartons and secured onto fumigation-free wooden pallets with steel strapping and stretch wrap.
Applications
▔▔- Plastic Injection Molding Machines: Controls the screw drive mechanism for continuous, stable plasticization and precise dosing feed.
- Agricultural Harvesting Equipment: Drives reel and cutter bar rotators, maintaining constant rotation under varying crop density loads.
- Mobile Construction Machinery: Used in mini-excavator slew drives and winch systems to deliver smooth positioning control without drift.
- Industrial Conveyor & Material Handling Systems: Powers heavy-duty chain conveyors requiring smooth starting torque and precise speed synchronization.
- Marine Deck Equipment: Operates anchor capstans and boom winches requiring high corrosion resistance and steady low-speed holding power.
Related Models
▔▔| Model Code | Displacement (cm³/rev) | Max. Speed (rpm) | Max. Torque (N·m) | Max. Output Power (kW) |
| MPJ-050 | 50 | 750 | 100 | 7.0 |
| MPJ-080 | 80 | 750 | 165 | 11.5 |
| MPJ-100 | 100 | 600 | 210 | 11.5 |
| MPJ-125 | 125 | 475 | 260 | 11.0 |
| MPJ-160 | 160 | 375 | 330 | 11.0 |
| MPJ-200 | 200 | 300 | 390 | 10.0 |
| MPJ-250 | 250 | 240 | 450 | 9.0 |
| MPJ-315 | 315 | 190 | 520 | 8.0 |
| MPJ-400 | 400 | 150 | 560 | 6.5 |
FAQ
▔▔Q: How do I confirm the exact MPJ Motor model code for my equipment?
A: You can cross-reference your required displacement, mounting flange style, shaft type, and port size with our model coding chart. Alternatively, contact our engineering team with your system flow rate and pressure requirements for tailored selection assistance.
Q: What level of filtration precision is required for hydraulic oil?
A: To maximize motor life and protect internal distribution valves, we recommend fluid cleanliness matching ISO 4406 Standard 18/16/13, with a recommended filter rating of 10 to 25 microns.
Q: What type of hydraulic oil should be used?
A: Premium mineral-based anti-wear hydraulic oil (ISO VG 32, 46, or 68) is standard. For high-temperature or environmental applications, synthetic or fire-resistant fluids can be used when fitted with optional FKM seals.
Contact Us
▔▔Get in touch with us and we will get in touch with you quickly to give you more personalized information.
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