XPi63-0523760 Hydro Leduc Truck Pump 63cc 380 bar

Product Overview

The XPi63-0523760 is a bent-axis fixed displacement piston pump built on the Hydro Leduc XPi series platform, in the XPi63 displacement size (63 cm³/rev). The pump features a bent-axis design with a 7-piston rotating group, specifically engineered for truck PTO hydraulic systems with direct flange mounting on the power take-off, eliminating the need for additional couplings or drive shafts. The XPi63-0523760 is the upgraded replacement for the classic XP63-0517635, with identical mounting dimensions and performance parameters enabling drop-in interchangeability.

The core design philosophy of the XPi series is intelligent adaptation — the pump automatically sets itself to the required direction of rotation. The user simply fits the inlet fitting on the required side based on the PTO rotation direction, and the pump will set itself accordingly, requiring no user intervention. This design makes installation and start-up easier than ever, significantly reducing the risk of installation errors. The XPi63-0523760 offers a continuous working pressure of 380 bar, peak pressure of 420 bar, maximum speed of 2,300 rpm, maximum torque absorbed at 380 bar of 401 N·m, and a weight of approximately 11.25 kg (without inlet fitting).

Engineered as a form-fit-function replacement for original Hydro Leduc XPi63 series pumps, this model maintains identical mounting flange dimensions (DIN ISO 14 / DIN 5462), shaft specifications (8-32-36 splined shaft), and port locations, enabling drop-in interchangeability. Each unit undergoes 100% simulated load testing prior to shipment, validating output flow and volumetric efficiency against original specifications.

Technical Specifications

• Model: XPi63-0523760

• Replacement Models: XP63-0517635, XP63-0512980

• Original Brand: Hydro Leduc

• Series: XPi Series Bent-Axis Fixed Displacement Piston Pump

• Pump Type: Bent-axis axial piston fixed displacement pump

• Design Feature: Bent-axis configuration, 7-piston design, fixed displacement, bi-directional self-adapting rotation

• Displacement: 63 cm³/rev (3.84 in³/rev)

• Continuous Working Pressure: 380 bar (38 MPa / 5,511 psi)

• Peak Pressure (<5 sec): 420 bar (42 MPa / 6,092 psi)

• Maximum Speed: 2,300 rpm

• Maximum Flow (@1000 rpm): 63 L/min

• Maximum Torque Absorbed at 380 bar: 401 N·m

• Rotation: Bi-directional self-adapting (CW/CCW)

• Mounting Flange: DIN ISO 14 (DIN 5462), 8-32-36 splined shaft

• Suction Connection: FI 1 1/2″

• Discharge Connection: G 3/4″ BSP

• Weight (without inlet fitting): 11.25 kg

• Weight (with inlet fitting): 11.7 kg

• Built-in Features: Integrated pressure relief valve, drain line design

• Hydraulic Fluid: Mineral-based hydraulic oil

• Circuit: Open circuit

Key Technical Advantages

1. 7-Piston Design with Excellent Flow Regularity

The XPi63-0523760 employs Hydro Leduc’s classic 7-piston rotating group design. Compared to conventional 5-piston or 9-piston designs, the 7-piston layout achieves the optimal balance between flow regularity and structural compactness. The 7-piston configuration provides 7 discharge strokes per rotation cycle, significantly reducing output flow pulsation and ensuring smooth operation of hydraulic actuators in truck cranes and loader cranes at low speeds. All XPi series models are of 7-piston design to ensure optimal flow regularity.

2. Bi-Directional Self-Adapting Rotation with Commissioning-Free Installation

The core innovation of the XPi63-0523760 is its intelligent bi-directional self-adapting rotation function. Conventional bent-axis pumps require confirming the PTO rotation direction and selecting the corresponding pump rotation direction during installation; incorrect installation can prevent the pump from working or even cause damage. The XPi series solves this problem through a clever inlet port layout design: the user simply fits the inlet fitting on the required side based on the PTO rotation direction, and the pump automatically adjusts to the correct operating direction without any user intervention or internal adjustment. This design makes installation and start-up easier than ever, significantly reducing on-site commissioning time and installation error risk.

3. Compact Design with Direct PTO Flange Mounting

The compact design of the XPi63-0523760 allows direct flange mounting on the power take-off (PTO), eliminating the need for additional couplings, drive shafts, or mounting brackets. The pump’s mounting flange conforms to DIN ISO 14 (DIN 5462) standard, with an 8-32-36 splined shaft enabling direct coupling with the PTO output spline. This design offers significant advantages in applications with very limited installation space, such as truck cranes, hook lifts, and skip loaders, greatly simplifying hydraulic system piping layout and installation processes.

4. High Pressure Rating with Strong Contamination Resistance

The XPi63-0523760 offers a continuous working pressure of 380 bar and peak pressure of 420 bar (<5 sec), meeting the high-pressure power requirements of truck hydraulic systems. The pump body uses materials with higher mechanical resistance, equipped with reinforced seals, an integrated pressure relief valve, and drain line design, offering strong anti-pollution characteristics and stable high-pressure output. The pump is widely used in truck equipment (truck cranes, forestry cranes, hook lifts, skip loaders), snow and ice equipment (spreaders, snow blades, turbines), and fire trucks.

Application Areas

• Truck Equipment: Truck cranes, forestry cranes, hook lifts, skip loaders, stabilization cylinders

• Snow & Ice Equipment: Spreaders, snow blades, snow turbines

• Fire Trucks: Fire pump drive hydraulic systems

• Municipal Vehicles: Sanitation vehicles, refuse compactors

• Military Vehicles: Military truck hydraulic systems

• Other PTO-Driven Applications: Various mobile equipment requiring compact high-pressure hydraulic pumps

Expert Maintenance Tips

1. Mounting Alignment Requirements: The pump features direct PTO flange mounting. Ensure the pump mounting flange and PTO output flange are fully mated, with the 8-32-36 splined shaft and PTO output spline mating surfaces free of burrs and damage. Tighten mounting bolts diagonally to the specified torque. Apply appropriate grease to the spline to prevent corrosion.

2. Inlet Port Direction Selection: The bi-directional self-adapting rotation function of the XPi pump depends on correct inlet fitting installation. Before installation, confirm the PTO rotation direction (CW or CCW), then install the inlet fitting on the corresponding port side. Suction lines should be as short and straight as possible, avoiding air pockets or excessive bending.

3. Case Filling and Initial Startup: Fill the pump housing with clean hydraulic fluid during initial installation to prevent dry friction on piston pairs during startup. Manually rotate the shaft 2–3 revolutions before startup to confirm free rotation. Initial startup should be at low pressure under no load for 5–10 minutes, confirming no abnormal noise or leakage before gradually applying load.

4. Hydraulic Fluid Cleanliness and Change Intervals: ISO VG46 anti-wear hydraulic oil is recommended. Maintain hydraulic fluid cleanliness at ISO 18/15 or NAS Level 9 or better. Replace hydraulic fluid and filter elements every 1,000 operating hours or annually, with filter element filtration accuracy no less than 10 μm.

5. Pressure Relief Valve Setting Verification: The pump features an integrated pressure relief valve. Verify the relief valve opening pressure every 1,000 operating hours, ensuring it opens normally when system pressure exceeds the setting value to protect the pump and system components from overpressure damage.

6. Restart After Extended Storage: For pumps stored over 6 months, manually rotate the shaft 2–3 revolutions to confirm free rotation, then run at low pressure under no load for 10 minutes, confirming normal case temperature and leakage before gradually applying load.