Hydraulic Orbital Motor
Product Introduction: High-Quality Hydraulic Orbital Motors
In injection molds, die-casting molds, and various industrial hydraulic systems, Hydraulic Orbital Motors are compact and efficient rotary actuators that convert hydraulic pressure into smooth rotational motion. Also known as gerotor motors, they feature a unique internal gear mechanism that delivers high torque output with compact dimensions, making them ideal for applications requiring reliable rotation in space-constrained environments. As a mold manufacturer that produces for our own use, we maintain extremely stringent standards for volumetric efficiency, starting torque, and durability of orbital motors. Every motor undergoes rigorous testing to ensure smooth operation, consistent performance, and long service life under demanding production conditions.
Self-Produced and Self-Used, Rigorously Selected
We are not only a supplier of hydraulic components but also a long-term user in our own mold production. Through extensive practical experience, we have repeatedly validated the material selection, internal sealing integrity, bearing durability, and overall performance of orbital motors. Only those with stable torque output, high volumetric efficiency, and exceptional durability are approved for our supply system.
Premium Materials, Robust Construction
Our hydraulic orbital motors are manufactured from high-strength alloy steels with precision machined internal components. The rotor and stator sets undergo specialized heat treatment for enhanced wear resistance and dimensional stability. High-quality shaft seals and pressure-balanced wear plates ensure reliable sealing even under high back pressure conditions, preventing internal leakage and extending motor service life.
Gerotor Working Principle, High Efficiency
The orbital motor operates on the gerotor principle, where an inner rotor with fewer teeth orbits and rotates within an outer stator with one more tooth. This creates expanding and contracting chambers that convert hydraulic flow into smooth rotational motion. The advanced valve plate distribution system ensures optimal fluid timing, delivering high starting torque and excellent low-speed stability.
Multiple Series and Configurations
We offer a comprehensive range of orbital motor series to meet diverse application requirements:
BM1 Series (Roller Type) : Features roller-type distribution for high mechanical efficiency and long service life. Suitable for general industrial applications including mold unscrewing, conveyor drives, and rotary actuators.
BM2 Series (Disc Valve Type) : Utilizes advanced disc valve distribution for improved performance at higher speeds and pressures. Ideal for applications requiring smooth operation across a wide speed range.
BM3 Series (Heavy Duty) : Robust construction with larger bearings and strengthened internal components for demanding applications requiring high torque and shock load resistance.
Wheel Mount Series: Integrated bearing and flange design for direct wheel mounting, suitable for mobile equipment and heavy-duty positioning systems.
Complete Specifications, Customized Solutions
We offer a wide range of specifications to meet various torque, speed, and mounting requirements:
Displacement Range: Available from 50ml/r to 1000ml/r, with common sizes including 50, 63, 80, 100, 125, 160, 200, 250, 315, 400, 500, and 630ml/r
Torque Output: Continuous torque from 20N·m to over 800N·m, depending on displacement and operating pressure
Speed Range: Typical operating speeds from 10rpm to 1200rpm, with optimal performance in the 50-800rpm range
Working Pressure: Continuous pressure up to 14-17MPa, with peak pressure capability up to 21-24MPa
Flow Rate: Optimized flow characteristics for efficient power conversion across the operating range
Multiple Mounting and Shaft Options
Our orbital motors support various mounting configurations to accommodate different mold and machinery designs:
Flange Mounting: Standard square flange (ISO 3019/1) and round flange options
Shaft Types: Parallel keyed shaft, splined shaft, tapered shaft with key, and hollow shaft options
Port Locations: Multiple port positions and thread types including metric, BSPP, BSPT, and NPT
Drain Options: Internal or external drain configurations based on application requirements
Custom Configurations: Special mounting flanges, shaft extensions, and port arrangements available on request
Excellent Low-Speed Performance
Orbital motors excel in applications requiring smooth rotation at low speeds. Precision-matched internal components and optimized valve timing ensure consistent torque output without cogging or vibration, even at speeds below 10rpm. This makes them ideal for precision mold unscrewing and positioning applications.
High Starting Torque
The gerotor design delivers exceptionally high starting torque, typically 80-90% of theoretical torque, ensuring reliable start-up under load. This characteristic is particularly valuable in mold applications where mechanisms must overcome static friction and material resistance.
Robust Sealing, Leak-Proof Operation
Multi-layer sealing protection with high-quality shaft seals and internal pressure balancing ensures long-term leak-free operation under high-pressure conditions. For applications with back pressure exceeding 3.5MPa, external drain connection is recommended to optimize performance and extend seal life.
Wide Application Range
Hydraulic orbital motors are essential components in numerous mold and industrial applications:
Unscrewing Mechanisms: For threaded plastic products such as bottle caps, closures, pipe fittings, and medical components
Rotary Core Pulling: For molds requiring rotating cores to form internal or external threads
Indexing Tables: For multi-station rotary molds and automated assembly systems
Mixer Drives: For mixing and blending equipment in chemical and food processing
Conveyor Drives: For material handling systems requiring compact, high-torque drives
Winch and Hoist Drives: For lifting and positioning applications
Agricultural Machinery: For various rotary implements and attachments
Easy Integration, Simple Maintenance
Standardized mounting dimensions and shaft configurations ensure compatibility with common mold and machinery designs. The modular construction allows for easy installation and maintenance. Multiple porting options provide flexibility for hydraulic circuit integration. Interchangeable components simplify repair and reduce downtime.
Complete Specifications, Customized Solutions
For standard specifications, we maintain regular inventory of common displacements, mounting types, and shaft configurations for quick dispatch. For non-standard customization, based on your specific application requirements, we offer custom orbital motors with special displacements, special shaft configurations, special port locations, custom mounting flanges, and integrated valve options.
We Can Also Source for You
If you have requirements for hydraulic orbital motors or other mold components, whether standard or non-standard, we can leverage our production experience and supply chain resources to select and procure the most suitable parts for you. We know molds, hydraulic systems, and we know components.
Contact us today for samples and a quotation.
