I. Definition
• Rear Mounting Flange (OMS):A mounting interface located at the rear of the hydraulic motor, designed for direct connection to the rear structure of equipment, enhancing installation flexibility and system compactness.
• Disc Distribution Motor:A hydraulic motor that utilizes a rotating port plate (disc distribution mechanism) in conjunction with a cylinder block and pistons to distribute hydraulic fluid and control flow direction, converting high-pressure oil into rotational mechanical energy.
II. Structure
1. Rear Mounting Flange (OMS):
• Material: Typically high-strength cast iron or alloy steel for robust connection durability.
• Hole Layout: Customizable (e.g., 4-hole square, 2-hole diamond) to align with equipment rear structures for secure fixation.
2. Disc Distribution Mechanism:
• Port Plate: Precision-machined metal disc with inlet/outlet ports corresponding to cylinder block oil passages.
• Cylinder Block & Pistons: The cylinder block contains multiple piston bores; pistons reciprocate under hydraulic pressure, with fluid intake/exhaust controlled via the port plate.
• Output Shaft: Connected to the cylinder block, converting piston reciprocation into rotational motion to deliver torque and speed.
III. Performance Characteristics
1. High-Pressure Capability:
• Withstands pressures up to15 MPa(e.g., certain models), suitable for heavy-duty applications.
2. Efficient Power Transmission:
• Minimized internal leakage via precise port plate-cylinder block-piston alignment, ensuring high volumetric efficiency.
3. Compact Design:
• Rear flange optimization reduces installation space, facilitating rear-mounted integration in equipment.
4. Long-Term Durability:
• High-strength materials and precision manufacturing ensure reliable operation in harsh conditions, lowering maintenance costs.
IV. Applications
1. Construction Machinery:
• Slewing mechanisms in excavators and cranes, leveraging rear flanges for direct connection to slewing bearings.
2. Industrial Hydraulic Systems:
• Hydraulic drives in metallurgy and mining (e.g., continuous casting machines, crushers) requiring high-pressure, efficient motors.
3. Tunnel Boring Equipment:
• Propulsion systems in shield machines and TBMs (Tunnel Boring Machines), using rear-flange motors to drive thrust cylinders.
4. Energy Sector:
• Yaw and pitch systems in wind turbines, where reliable hydraulic motors adjust blade angles; rear flanges simplify installation/maintenance.
V. Selection Guidelines
1. Pressure & Flow Matching:
• Choose a motor model compatible with system operating pressure and flow requirements to ensure stable performance.
2. Mounting Interface Compatibility:
• Verify rear flange hole layout, dimensions, and material match equipment rear structures to avoid installation issues.
3. Speed & Torque Requirements:
• Select motor specifications based on equipment demands for rotational speed and torque output.
4. Environmental Adaptability:
• Consider operating temperature, humidity, and corrosion resistance; opt for motors with appropriate protection ratings (e.g., IP65/IP67).
