HPR105D-02R Linde Piston Pump 210cc 420bar Dual

Product Overview

The HPR105D-02R is a Linde Hydraulics (now part of the Danfoss Group) HPR-02 Series dual axial piston variable displacement pump. The HPR Series is Linde’s flagship high-pressure open-circuit piston pump product line, covering displacements from HPR55 through HPR280, including dual-pump configurations such as HPR105D, HPR125D, and HPR165D. The HPR105D-02R delivers a maximum total displacement of 210 cm³/rev (105 + 105 cm³/rev) .

This model features an R configuration (right-hand rotation) and is built on the Series 02 technology platform, incorporating optimized 21° swashplate technology that delivers extended rotating group service life and reduced noise levels compared to previous series. The pump integrates two equal-displacement pumping sections within a single housing, driven by a common input shaft, simultaneously supplying two independent open hydraulic circuits with on-demand flow regulation.

As a direct OEM-equivalent replacement solution for the Linde HPR-02 Series, this product offers complete in-situ interchangeability, strictly adhering to Linde’s original design specifications and mounting interface standards. Every unit undergoes 100% simulated duty-cycle testing, ensuring that key performance metrics—including volumetric efficiency, pressure-flow characteristics, and case drain flow at rated pressure and full displacement—meet or exceed original factory specifications.

The complete ordering code HPR105D-02R precisely defines every design detail: HPR (Linde High Pressure Piston Pump series), 105 (single section displacement of 105 cc/rev), D (dual pump configuration), 02 (Series 02 technology platform), R (right-hand rotation).

Technical Specifications 

• Model Number: HPR105D-02R (Full code examples: HPR105D-02R E1LP / HPR105D-02R 2563)

• Brand Series: Linde Hydraulics HPR-02 Series

• Pump Type: Dual Swashplate Axial Piston Variable Displacement Pump (Open Circuit)

• Total Maximum Displacement: 210 cm³/rev (105 + 105 cm³/rev)

• Single Section Displacement: 105 cm³/rev

• Rated Pressure (Continuous): 420 bar

• Peak Pressure (Intermittent): 500 bar

• Maximum Input Speed: 2350 rpm

• Theoretical Flow (at 1500 rpm): 305 L/min

• Rotation Direction: R – Right-hand (clockwise from shaft end)

• Control Options: LP (Load Sensing + Pressure Cut-off), H1L (Load Sensing + Hydraulic Pressure Override), E1L (Load Sensing + Electro-proportional Override), LEP (Load Sensing + Electro-proportional + Pressure Cut-off), ETP (Constant Power + Electro-proportional + Pressure Cut-off), TL2 (Load Sensing + Hyperbolic Constant Power)

• Maximum Case Pressure: 1.5 bar

• Technology Platform: Series 02, 21° Swashplate Technology

• Mounting Type: SAE Mounting Flange + SAE/ANSI Splined Shaft

• Port Connections: SAE High-Pressure Ports

• Weight (Approx.): 96 kg

• Housing Material: High-strength Cast Iron

• Hydraulic Fluid: Mineral Oil (ISO VG 46 or 68 recommended)

• Recommended Filtration: ISO 4406 18/16/13 or higher

Key Technical Advantages

1. Dual Pump Section in One Housing – Symmetrical Oil Supply without Load Imbalance
The HPR105D-02R integrates two equal-displacement (105 + 105 cc/rev) pumping sections within a single compact housing, driven by a common input shaft. This back-to-back dual-displacement design enables symmetrical oil supply to two independent hydraulic circuits without the load imbalance issues common to single-pump dual-outlet designs. This is particularly advantageous for mobile equipment requiring simultaneous drive of traction and working functions.

2. Flow on Demand Self-Regulation – System-Level Energy Savings
The HPR-02 Series features self-regulating variable control technology, where pump output flow automatically matches current system load demand. When paired with Linde LSC (Load Sensing Control) directional valves and LinTronic control systems, it delivers flow-on-demand distribution with zero overflow losses, dramatically improving system energy efficiency. Compared to traditional fixed-displacement pump systems, comprehensive energy savings can reach over 30%.

3. 21° Swashplate Technology – Extended Service Life with Low Noise
The Series 02 technology platform incorporates an optimized 21° swashplate angle design, significantly reducing contact stress and friction losses in the rotating group (pistons/slippers/swashplate) compared to previous generations, effectively extending rotating group service life. Combined with optimized oil film bearing design and SPU noise reduction technology, the pump maintains low noise levels across the entire operating speed range.

4. 420 bar Ultra-High Pressure Rating with 500 bar Peak Capacity
The HPR105D-02R delivers a rated working pressure of 420 bar with peak pressure capability of 500 bar. This pressure rating is among the industry’s highest for open-circuit piston pumps. The high-strength cast iron housing combined with rigorously validated rotating group design enables the pump to withstand extreme pressure shocks encountered in heavy-duty mobile equipment applications.

5. Superior Self-Priming Capability & Broad Speed Range
The HPR-02 Series offers excellent self-priming capability up to rated speed. With a maximum input speed of 2350 rpm and superior self-priming performance, the pump maintains stable flow output even under challenging inlet conditions—including cold starts, high-altitude operation, and low inlet pressure scenarios.

6. Flexible Control Options & Global Interchangeability
The HPR-02 Series offers multiple control options including LP, H1L, E1L, LEP, ETP, and TL2. SAE mounting flange with SAE/ANSI splined shaft configuration ensures compatibility with major global OEM mounting interfaces. Through-drive capability also supports串联 additional pump stages for complex multi-pump system requirements.

Application Areas

• Construction Equipment (Primary Application): Excavators, Wheel Loaders, Bulldozers – simultaneously driving traction systems and working attachments

• Lifting & Material Handling Equipment: Mobile Cranes, Reach Stackers, Heavy Forklifts – providing both travel and hoisting/luffing power

• Agricultural Machinery: Large Combine Harvesters, Tractors – simultaneously driving traction and implement systems

• Forestry Equipment: Feller Bunchers, Skidders – high-reliability hydraulic power in severe operating conditions

• Mining & Underground Equipment: Mining Loaders, Underground Transport Vehicles – withstanding high-dust, high-impact extreme environments

• Industrial Hydraulic Systems: Injection Molding Machines, Presses, Metallurgical Equipment – high-pressure systems requiring dual independent pump supply

Expert Maintenance Tips

1. Model Confirmation & Pre-Installation Inspection: Prior to installation, confirm the complete model code as HPR105D-02R. As a dual-pump configuration, verify that the SAE mounting flange specification and drive shaft spline type (SAE/ANSI standard) match the host machine PTO interface. Manually rotate the shaft before installation to confirm smooth, obstruction-free rotation with no abnormal resistance from either pump section.

2. Dual Circuit Port Identification & Line Connections: The HPR105D-02R features two independent suction and pressure port sets. During installation, carefully cross-reference piping diagrams to ensure each circuit’s suction and pressure lines are correctly connected to the corresponding pump section ports. Drain lines for both circuits should return to the tank independently to avoid cross-interference.

3. Fluid Cleanliness Control: Recommended filtration rating is ISO 4406 18/16/13 or higher. ISO VG 46 or 68 mineral hydraulic oil is recommended. Dual pumps impose stricter cleanliness requirements—both sections share the same housing oil, so contamination affects both circuits simultaneously. Complete system flushing is mandatory before initial start-up.

4. Inlet Condition Assurance: Although the HPR-02 Series offers excellent self-priming capability, ensure suction line inlet pressure meets requirements. Keep suction lines as short and straight as possible, avoiding unnecessary bends and restrictions. Position the reservoir above or at the same level as the pump for optimal suction conditions. Using a pressurized reservoir or reducing the swashplate angle can further increase maximum allowable speed.

5. Initial Start-Up & Priming: Before first start-up, pre-lubricate the pump by filling the housing with clean hydraulic fluid through the case drain port. Perform a brief jog start (5–10 seconds) to check for abnormal noise, leakage, or excessive vibration. Then正式 start the pump and run at low load for several minutes to purge air from the pump and both circuit lines. Both circuits must be individually purged.

6. Case Drain Pressure Monitoring: Maximum allowable case pressure is 1.5 bar. Install a pressure gauge or sensor on the case drain line for real-time monitoring—both pump sections share a single housing, so excessive case pressure affects the reliability of both sections simultaneously. Ensure the case drain line remains unobstructed.

7. Scheduled Maintenance & Dual Section Synchronization Check: Follow the maintenance intervals specified in the Linde HPR-02 Series service manual. Pay particular attention to rotating group wear in both sections, compensator set-point drift, and seal condition during routine inspections. As both sections share a common drive shaft, if significant output characteristic differences are observed between the two circuits, this may indicate internal leakage or control valve issues in one section—prompt diagnosis is recommended.