MAC GREGOR HAGGLUNDS HYDRAULIC DIRECTIONAL VALVE ART NO 287 5949-801

The MAC GREGOR HAGGLUNDS Hydraulic Directional Valve, Article 287 5949-801, is a high-performance, proportional directional control valve designed specifically for use with Hagglunds radial piston hydraulic motors. It is a core component in systems requiring precise control of speed, direction, and torque in demanding low-speed, high-torque applications.

This valve is engineered to integrate seamlessly with Hagglunds drive systems, typically found in heavy-duty industrial and maritime equipment, such as winches, cranes, conveyors, and slew drives.

Key Specifications (Typical for this Series)

• Function: Proportional 4/3 directional valve (4 ports, 3 positions). Allows for precise control of fluid flow direction and volume to the hydraulic motor.

• Operation: Electrically controlled, often via a proportional solenoid (24VDC or 12VDC common). The input signal (e.g., 0-10V, 4-20mA) dictates the spool position, enabling smooth and proportional control of motor speed and direction.

• Flow Capacity: Designed to match the flow requirements of specific Hagglunds motor sizes (e.g., ranges from ~50 L/min up to several hundred L/min per motor port).

• Pressure Rating: Built for high-pressure systems, typically up to 350 bar (5,000 psi) continuous, with higher peak pressure capability.

• Integral Features: Often includes:

  • Cross-line relief valves: For overload protection of the hydraulic motor.

  • Anti-cavitation check valves: To prevent motor cavitation during overhauling loads.

  • Pressure compensator: To maintain consistent flow (and thus motor speed) regardless of load changes (if equipped as a closed-loop valve).

• Porting: SAE flanged or threaded ports for robust, leak-free connections.

• Construction: Heavy-duty cast iron or steel housing for maximum durability in harsh environments.

Typical Applications

This valve is a critical component in systems powered by Hagglunds hydraulic motors, including:

• Marine & Offshore: MacGregor winches (cargo, mooring, towing), hatch cover systems, stern ramps, cable laying systems.

• Industrial Processing: Reclaimers, stackers, bucket-wheel excavators, large conveyor drives.

• Cranes & Heavy Lifting: Slewing drives, travel drives for gantry cranes.

• Specialized Machinery: Any application requiring precise, powerful, and reliable low-speed/high-torque rotational movement.

Key Features & Benefits

1. Precision Control: Enables smooth acceleration, deceleration, and precise speed control of heavy loads.

2. Robust & Reliable: Designed for 24/7 operation in the most demanding environments, including offshore and mining.

3. Integrated Protection: Built-in relief and check valves protect the expensive hydraulic motor from overload, shock, and cavitation damage.

4. System Compatibility: Optimized for the specific volumetric displacement and performance characteristics of Hagglunds radial piston motors.

5. High Efficiency: Minimizes pressure drops, contributing to overall system energy efficiency.

SUPPLIER/PRODUCER NO: 100039

CH-100061-002

24VDC, 36W, 36/12