Product Overview
The A7V117HD2.0LZF00 is a Bosch Rexroth A7V Series size 2.0 bent-axis axial piston variable displacement pump with a nominal displacement of 117 cm³/rev, nominal operating pressure of 350 bar, peak pressure capability of 400 bar (40 MPa), and maximum speed of 2240 rpm. Designed for hydrostatic transmissions in open circuits, the pump delivers output flow proportional to drive speed and displacement, with stepless variation at constant drive speed. As a medium-to-large displacement model in the A7V series, the A7V117HD2.0LZF00 is specifically engineered for heavy-duty, high-pressure, and high-power industrial hydraulic systems.
This model is equipped with HD hydraulic control (pressure-related type), precisely adjusting the swashplate angle via pilot pressure signals for continuous remote displacement control. The HD control mode is suitable for applications requiring automatic flow adjustment based on system pressure, and can be combined with remote pressure relief valves or proportional pilot valves for flexible control strategies. The A7V series employs a bent-axis design with a high-performance rotary group and well-proven spherical control area, offering self-centering, low peripheral speed, and high efficiency. The cylinder and port plate utilize spherical porting for automatic self-centering during rotation, further enhancing volumetric efficiency and service life.
The pump is widely deployed in construction machinery, metallurgical equipment, mining machinery, and marine hydraulic systems for heavy-duty conditions. Every A7V117HD2.0LZF00 undergoes 100% simulated duty-cycle testing prior to shipment — covering pressure holding, flow output, control response, and internal leakage — ensuring complete drop-in interchangeability with original Rexroth pumps without installation or plumbing modifications.
Technical Specifications
Model: A7V117HD2.0LZF00
Brand: Bosch Rexroth
Series: A7V Series 2.0
Pump Type: Bent-axis axial piston variable displacement pump
Nominal Displacement: 117 cm³/rev
Minimum Displacement: 0 cm³/rev (adjustable to zero)
Nominal Operating Pressure: 350 bar (35 MPa)
Peak Pressure: 400 bar (40 MPa)
Maximum Speed (nₘₐₓ0.09, inlet 0.09 MPa abs.): 2240 rpm
Maximum Speed (nₘₐₓ0.1, inlet 0.1 MPa abs.): 2360 rpm
Maximum Speed (nₘₐₓ0.15, inlet 0.15 MPa abs.): 2650 rpm
Maximum Flow (nₘₐₓ0.09): Approx. 254 L/min
Maximum Flow (nₘₐₓ0.1): Approx. 267 L/min
Maximum Flow (nₘₐₓ0.15): Approx. 300 L/min
Control Type: HD hydraulic control (pressure-related)
Direction of Rotation: Left-hand (anti-clockwise, viewed from shaft end)
Mounting Flange: SAE standard flange (side ports)
Shaft Type: Parallel keyed shaft
Housing Material: High-strength cast iron
Weight: Approx. 80 kg
Fluid Compatibility: Mineral-based hydraulic oil, fire-resistant fluids
Operating Temperature Range: 30–90 ℃
Volumetric Efficiency: ≥ 94% (typical)
Key Technical Advantages
1. Bent-Axis Design — High Volumetric Efficiency and Self-Centering
The A7V117HD2.0LZF00 employs a bent-axis axial piston design in which the cylinder and port plate utilize spherical porting for automatic self-centering during rotation, resulting in low peripheral speed and high volumetric efficiency. The bent-axis configuration offers a larger displacement range and higher power density compared to swashplate designs, particularly suitable for medium-to-large displacement applications of 117 cm³/rev and above. The spherical porting design maintains excellent port plate contact under high pressure, reducing internal leakage and extending service life.
2. HD Hydraulic Control — Precision Pressure-Related Regulation
This model features HD hydraulic control (pressure-related), driving the control piston through pilot pressure signals to precisely adjust the swashplate angle. The HD control mode automatically matches pump output flow to system pressure demand, maintaining stable flow output under varying loads. The control method is compatible with remote pressure relief valves and proportional pilot valves, facilitating flexible system control strategies. A pressure cut-off module (option D) is available for enhanced system safety.
3. High-Performance Rotary Group — Long Life Under Heavy-Duty Conditions
The A7V117HD2.0LZF00 is equipped with a high-performance rotary group and well-proven spherical control area, offering self-centering, low peripheral speed, and high efficiency. The drive shaft is constructed from high-strength alloy steel and can withstand radial loads, suitable for belt-drive or gear-drive installation. The optimized port plate flow passage design and compact construction reduce noise levels by approximately 5 dB(A) compared to previous generation products, improving the acoustic environment of industrial sites.
4. Wide Speed Range and High Power Density
The pump achieves a maximum speed of 2240 rpm at an inlet pressure of 0.09 MPa, extending to 2650 rpm at an inlet pressure of 0.15 MPa. Maximum flow reaches approximately 300 L/min at 2650 rpm, with power density leading among comparable bent-axis pumps. The wide speed range combined with 350 bar nominal and 400 bar peak pressure enables meeting diverse operating requirements from low-speed high-torque to high-speed high-flow — particularly suitable for heavy-duty construction machinery and metallurgical equipment hydraulic systems.
5. Exceptional Field Interchangeability and Media Compatibility
The A7V117HD2.0LZF00 features mounting flange, shaft specifications, and port layouts conforming to Rexroth A7V Series standards, enabling drop-in interchangeability with other A7V117 models of the same size. The pump is compatible with mineral-based hydraulic oil and fire-resistant fluids (such as HFB/HFC), with seal material options available based on media type. Original Rexroth A7V pumps can be directly replaced without modifying system installation interfaces or plumbing layouts.
Application Areas
Construction Machinery: Travel drive and swing hydraulic systems for large excavators, rotary drilling rigs, and wheel loaders
Metallurgical Equipment: Hydraulic power stations for continuous casting machines, rolling mills, and forging equipment, leveraging high-pressure and large-flow advantages for heavy-duty conditions
Mining Machinery: Hydraulic drive systems for LHD loaders, drill rigs, and mining trucks
Marine & Offshore: Deck machinery, anchor winches, and steering gear hydraulic systems
Agricultural Machinery: Hydraulic hitch and drive systems for large tractors and harvesters
Industrial Hydraulic Power Units: Power sources for high-pressure presses, injection molding machines, and test benches
Material Handling: Port cranes and reach stacker hydraulic systems
The A7V117HD2.0LZF00 is ideally suited for heavy-duty industrial hydraulic systems requiring 350 bar continuous working pressure and displacements in the 100–150 cm³/rev range — the classic configuration for large construction machinery and metallurgical equipment hydraulic power units.
Expert Maintenance Tips
1. Shaft Alignment and Coupling Requirements
Maintain concentricity between the pump shaft and drive shaft within 0.05 mm. Flexible couplings are strongly recommended to accommodate minor angular misalignment. The A7V117HD2.0LZF00 weighs approximately 80 kg — use appropriate lifting equipment during installation and never strike the shaft end. Tighten mounting flange bolts in diagonal sequence to the specified torque to ensure uniform flange loading. The drive shaft can withstand radial loads, but excessive axial forces should be avoided.
2. Pre-Start Priming Procedure
Before initial startup, the pump must be slowly filled through the case drain port with clean hydraulic oil to ensure adequate lubrication, cooling, and sealing during startup. Start the pump in jog mode until the pump and piping are sufficiently filled and vented. After complete venting, run at low pressure for 5–10 minutes, check piping and component tightness, then gradually increase to rated pressure.
3. HD Hydraulic Controller Commissioning
Commission the HD hydraulic controller ensuring a linear relationship between pilot pressure signal and control piston. The control pressure range is typically 0–3.5 MPa (depending on specific configuration); verify the correspondence between control pressure and displacement. During commissioning, first set control pressure to minimum and confirm zero pump displacement with no output flow, then gradually increase control pressure to verify displacement response matches the setpoint. If equipped with a pressure cut-off module, verify coordination between cut-off pressure setting and system relief valve.
4. Fluid Cleanliness and Filtration
Fluid cleanliness of ISO 18/16/13 (NAS Class 8) or better is recommended. Use pressure line filters with a filtration ratio β10 ≥ 75 (per ISO 4572). Avoid suction filters, which increase suction resistance and cavitation risk; if essential, use with a vacuum switch monitor. Install a breather filter with filtration accuracy ≤10 μm on the reservoir and regularly check oil level and fluid condition. Hydraulic oil should be changed every 1000–3000 hours of operation or every six months.
5. Restart Procedure After Extended Shutdown
If the pump has been idle for more than 30 days, manually rotate the shaft several turns to verify free rotation before restarting. Check for abnormal leakage at the case drain port. After startup, operate at low pressure for 10–15 minutes until oil temperature reaches normal operating range before applying full load. When using fire-resistant fluids, shorten oil change intervals and increase fluid sampling frequency due to reduced lubricity.
