Linde HPR Series Pump | HPR-135-02R | High Pressure Axial Piston Pump | HPR135 E1LP

Linde HPR Series 135cc High-Pressure Self-Priming Variable Piston Pumps

Product Overview: The Linde HPR-02 series is a premier power source in global open-circuit hydraulic systems, renowned for its superior “self-priming capability” and “extreme reliability.” As a large-displacement model within the series, the HPR-135 is specifically engineered to meet the massive power demands of heavy-duty mobile machinery, including crawler cranes, large excavators, and material handlers. The featured model HPR-135-02R E1LP integrates Linde’s cutting-edge E1LP (Electronic Proportional Control with Pressure Cut-off and Power Limiting) technology. Delivering rated pressures up to 420 Bar, this pump provides precise flow modulation and exceptional fuel efficiency alongside industry-leading power density.

Key Technical Advantages:

• Superior Self-Priming Performance: The unique inlet design and balanced rotating group permit high-speed operation without an auxiliary charge pump, maintaining excellent suction efficiency and preventing cavitation.

• Precision E1LP Modulation: Combines electronic proportional displacement control, pressure compensation, and power limiting. This ensures the pump perfectly tracks the engine’s power curve for smooth multi-function synchronization.

• Extreme High-Pressure Durability: Rated for continuous operation at 420 Bar (6100 PSI) with peak capabilities up to 500 Bar. The Series 02 architecture is optimized for 24/7 heavy-duty cycles in mining and construction environments.

• Rapid Dynamic Response: High-speed swashplate adjustment ensures agility and synchronization for critical machine functions like boom lifting or high-torque travel.

• Quiet & Low-Vibration Design: Optimized valve plate technology significantly suppresses hydraulic ripples and structural noise, extending the fatigue life of the entire hydraulic system.

Detailed Models & Parameters:

• Core Series: Linde HPR-02 Series (Open Circuit).

• Model Keywords: HPR135, HPR135-02, HPR-135-02R, HPR-135-02R E1LP.

• Displacement: 137 cm³/rev (135cc class).

• Pressure Ratings: Rated at 420 Bar (6100 PSI) continuous; Peak capability up to 500 Bar (7250 PSI).

• Rated Speed: Self-priming speed up to 2500 RPM (subject to conditions).

• Rotation: R (Clockwise/CW); L (Counter-clockwise/CCW).

• Target Applications: Heavy crawler cranes, rotary drilling rigs, forestry equipment, and high-torque mobile drives.