Product Overview
The A17FO080/10NLWK0E81 is a Bosch Rexroth A17FO series 10 bent-axis axial piston fixed displacement pump, nominal size 80, with a geometric displacement of 80.4 cm³/rev. The pump features an axial tapered piston rotary group in bent-axis design, purpose-developed for hydrostatic drives in open circuits for commercial vehicles, with a nominal working pressure of 350 bar and maximum pressure of 400 bar. The series covers six sizes from 23 to 107 (22.9–106.7 cm³/rev), with the A17FO080 representing the 80 cm³ standard model.
The full order code A17FO080/10NLWK0E81 decodes as follows: A17F indicates bent-axis design, fixed displacement, nominal pressure 350 bar, maximum pressure 400 bar, for commercial vehicles (truck); O indicates pump, open circuit; 080 is the nominal size; 10 is series 1, index 0; N indicates metric port and fastening threads with profiled sealing ring per DIN 3852; L indicates counter-clockwise rotation (viewed on drive shaft); W indicates FKM fluorocarbon rubber seals (including 2 shaft seal rings in FKM); KO indicates special flange ISO 7653-1985 (for trucks); E8 indicates splined shaft similar to DIN ISO 14 (for trucks); 1 indicates service line ports A and S at rear; standard version.
Manufactured to exact Rexroth A17FO platform specifications, this pump delivers true drop-in interchangeability. The diecast aluminum housing achieves weight optimization, with flange and shaft specifically designed for direct mounting on the power take-off of commercial vehicles. Direction of rotation can be changed simply by replacing the pressure port reducing fitting. Every unit undergoes 100% simulated operating condition testing before shipment.
Technical Specifications
The following specifications are based on Bosch Rexroth A17FO series 10 official technical data (RE 91520) and publicly available product data:
Model: A17FO080/10NLWK0E81
Manufacturer: Bosch Rexroth
Series: A17FO series 10
Design: Bent-axis axial piston fixed displacement pump, open circuit
Nominal Size: 80
Geometric Displacement: 80.4 cm³/rev
Nominal Working Pressure: 350 bar (5000 psi)
Maximum Pressure: 400 bar (5800 psi)
Maximum Speed (nnom): 2150 rpm
Maximum Speed (nmax): 3100 rpm
Theoretical Flow at nnom: 173 L/min
Maximum Flow: 171 L/min
Output Power at nnom and Δp = 350 bar: 101 kW
Output Torque at Δp = 350 bar: 448 N·m
Rotation Direction: Counter-clockwise (L, viewed on drive shaft)
Control Type: Fixed displacement (no variable control)
Mounting Flange: Special flange ISO 7653-1985 (for trucks), 80×80 mm mounting pattern
Shaft Specification: Splined shaft similar to DIN ISO 14, 8×32×36
Sealing Material: FKM fluorocarbon rubber (including 2 shaft seal rings)
Port Connections: Outlet G 1″ (BSP), inlet G 1 1/4″ (BSP), rear threaded ports
Case Drain: No external drain line required
Case Volume: 0.6 L
Moment of Inertia for Rotary Group: 0.0072 kg·m²
Rotary Stiffness: 8.73 kNm/rad
Maximum Angular Acceleration: 6000 rad/s²
Weight (Approx.): 12.3 kg
Housing Material: Diecast aluminum
Operating Fluid: Mineral hydraulic oil
System Type: Open-circuit hydraulic system
Key Technical Advantages
1. High Power Density and Total Efficiency from Bent-Axis Design
The A17FO series employs a bent-axis design with an axial tapered piston rotary group, in which pistons act directly on the drive plate through connecting rods, shortening the torque transmission path for superior mechanical efficiency. At nominal speed of 2150 rpm and differential pressure of 350 bar, the pump delivers 101 kW output power. According to manufacturer data, the series features high total efficiency and long service life.
2. Diecast Aluminum Housing for Weight Optimization and Compact Installation
The diecast aluminum housing effectively reduces overall pump weight (A17FO080 approximately 12.3 kg) with a compact installation envelope. The flange and shaft are specifically designed for direct mounting on the power take-off of commercial vehicles, enabling quick and straightforward installation. For space-constrained commercial vehicle hydraulic systems, this compact design significantly reduces installation complexity.
3. No Case Drain Line Required — Simplified System Architecture
The A17FO series features a standard design requiring no external case drain line, eliminating the drain piping connections required by traditional piston pumps and simplifying hydraulic system architecture while reducing leakage risk and installation costs. This design makes the pump easier to install and maintain, particularly suited to the compact chassis space of commercial vehicles.
4. Self-Priming Capability and Quick Rotation Direction Change
The pump offers excellent self-priming performance without requiring additional suction assist devices. Rotation direction adjustment is accomplished simply by replacing the pressure port reducing fitting — no pump disassembly or piping changes required — making on-site operation simple and maintenance efficient.
5. 100% Simulated Operating Condition Testing
Every pump undergoes a comprehensive factory test protocol: continuous operation at 350 bar nominal pressure to verify volumetric and total efficiency, 400 bar peak pressure cycling to validate housing and seal integrity, and full-speed-range verification of flow output linearity. Test documentation is supplied with each unit.
Application Areas
Dump Trucks and Tippers: Hydraulic lifting systems for road and mining dump trucks
Truck-Mounted Cranes: Hydraulic power for lifting and telescoping booms
Tankers: Unloading and media transfer hydraulic systems
Municipal Vehicles: Garbage compactor trucks, street sprinklers, aerial work platform hydraulic power units
Specialty Commercial Vehicles: Auxiliary hydraulic systems for various commercial vehicles driven by power take-off
Industrial Hydraulic Systems: General industrial hydraulic power units requiring high-pressure fixed displacement pumps
Expert Maintenance Tips
1. Mandatory Case Pre-Fill and Air Purging at First Installation
After installation, the pump housing must be filled with clean hydraulic fluid through the appropriate ports until oil overflows, ensuring no air remains in the housing. System hydraulic lines must also be filled simultaneously. Open the bleed plug and run the pump at idle until bubble-free oil flows continuously. Do not apply load until the system is confirmed air-free. Dry starting will cause catastrophic wear to the piston/cylinder interface and valve plate within seconds.
2. Power Take-Off Mounting Alignment Requirements
The A17FO080 mounts directly on the vehicle power take-off via flange and splined shaft. During installation, ensure concentricity deviation between the pump shaft and PTO output shaft does not exceed 0.05 mm, with angular deviation not exceeding 0.5°. Apply appropriate grease to the spline surface to prevent dry-friction wear.
3. Rotation Direction Change Procedure
To change pump rotation direction, simply replace the reducing fitting on the pressure port. Follow the Rexroth official technical manual’s direction of rotation and direction change section, ensuring the reducing fitting installation torque meets specification to prevent leakage from insufficient torque.
4. Fluid Cleanliness and Viscosity Control
Maintain system cleanliness at NAS 9 or ISO 18/16/13 or better. Recommended operating viscosity is ISO VG 32–68, with an optimum range of 14–50 cSt. Install a 10 μm nominal filtration element in the suction line; replace after the first 200 hours, then inspect or replace every 500 hours.
5. Post-Shutdown Restart Inspection
Before restarting after extended shutdown, check the hydraulic fluid level in the case and top up if necessary. Verify all port connections are secure and hydraulic lines are leak-free. Run the pump at idle for several minutes, confirming system pressure buildup and absence of abnormal noise before applying load.
