R902162394 A17FO063/10NLWK0E81-0 Rexroth Piston Pump 350 Bar

Product Overview

The R902162394 corresponds to the A17FO063/10NLWK0E81-0, a Bosch Rexroth A17FO Series 10 bent-axis axial piston fixed displacement pump with a displacement of 63 cc/rev. Designed specifically for commercial vehicle hydraulic systems, this pump operates at a nominal pressure of 350 bar (5075 psi) with a maximum pressure of 400 bar (5800 psi), delivering a maximum theoretical flow of 139 L/min at 2200 rpm and 81 kW rated power.

The A17FO family covers six displacement sizes from 22.9 to 106.7 cc/rev (A17FO023/032/045/063/080/107). Its integrated compact design features a flange and drive shaft specifically engineered for direct mounting on commercial vehicle power take-offs (PTO). The die-cast aluminum housing optimizes weight while maintaining structural integrity, with a total pump weight of approximately 9.3 kg. The pump requires no case drain line, simplifying installation and reducing maintenance costs. The bent-axis rotary group delivers high power density, excellent suction characteristics, and low operating noise. Changing the direction of rotation is accomplished simply by swapping the reducing threaded fitting on the pressure port—no need to disassemble the pump or mounting plate.

Every pump undergoes 100% simulated operating-condition testing before shipment, including rated pressure hold, flow characteristic verification, and control response validation—delivering immediate reliability upon installation.

Technical Specifications

Model Identification:

• R902162394 — A17FO063/10NLWK0E81-0, bent-axis fixed displacement pump, 63 cc/rev, Series 10

• Model code breakdown: A17F=bent-axis axial piston unit, O=pump/open circuit, 063=displacement size, 10=Series 10, N=metric port threads with profiled sealing ring (DIN 3852), L=left-hand rotation (counter-clockwise, viewed on drive shaft), W=FKM seals (including 2 FKM shaft seals), K0=ISO 7653-1985 special flange (for trucks), E81=splined shaft similar to DIN ISO 14, 1=ports A and S at rear

Displacement (A17FO Series):

• A17FO023: 22.9 cc/rev

• A17FO032: 32.0 cc/rev

• A17FO045: 45.6 cc/rev

• A17FO063: 63.0 cc/rev

• A17FO080: 80.4 cc/rev

• A17FO107: 106.7 cc/rev

Pressure Ratings (A17FO063):

• Nominal working pressure (continuous): 350 bar (5075 psi)

• Maximum pressure (intermittent): 400 bar (5800 psi)

• Minimum pressure on high-pressure side: 10 bar (145 psi, to prevent damage to the axial piston unit)

• Single operating period: 5 s

• Total operating period: 50 h

• Maximum rate of pressure change: 9000 bar/s

• Minimum pressure at suction port: 0.8 bar absolute

• Maximum pressure at suction port: 2 bar absolute

Speed Range (A17FO063):

• Nominal speed (nnom): 2200 rpm

• Maximum speed (nmax): 3200 rpm

Theoretical Flow and Power (A17FO063):

• Flow at nominal speed: 139 L/min

• Power at nominal speed and Δp=350 bar: 81 kW

• Torque at Δp=350 bar: 351 Nm

• Moment of inertia for rotary group: 0.0042 kgm²

• Maximum angular acceleration: 7500 rad/s²

• Case volume: 0.5 L

• Mass moment: 9.9 Nm

Structural Parameters:

• Pump type: Bent-axis axial piston fixed displacement pump, open circuit

• Series: A17FO/10 Series 10

• Mounting flange: ISO 7653-1985 special flange (for commercial vehicles)

• Drive shaft: Splined shaft, similar to DIN ISO 14 (8×32×35)

• Rotation: Left-hand (counter-clockwise), viewed from shaft end

• Pressure port: G 3/4″ (BSP)

• Suction port: G 1″ (BSP)

• Port position: Rear

• Seal material: FKM (fluorocarbon rubber), including 2 FKM shaft seals

• Housing material: Die-cast aluminum

• Weight: Approximately 9.3 kg

Hydraulic Fluid and Operating Conditions:

• Recommended fluid: Mineral oil (HL, HLP) according to DIN 51524

• Cleanliness level: ISO 4406 20/18/15 (normal); 19/17/14 (high temperature 90°C-103°C)

• Operating viscosity range: 10-400 mm²/s (optimal 16-36 mm²/s)

• Operating oil temperature range: -25°C to +103°C (measured at air bleed port R)

• Ambient temperature range: -30°C to +90°C

Key Technical Advantages

1. Bent-Axis Design Delivers High Power Density

The A17FO series features a 40° bent-axis design, achieving larger displacement and higher power density within the same envelope compared to conventional swashplate pumps. The rotary group utilizes the same 7-piston working mechanism as the high-pressure A2F series, ensuring robust durability. The A17FO063 delivers 139 L/min flow at 2200 rpm nominal speed with 81 kW corner power. The compact die-cast aluminum housing keeps pump weight to approximately 9.3 kg, fitting within the tight installation spaces of commercial vehicles.

2. Optimized for Direct PTO Mounting on Commercial Vehicles

The pump’s flange (ISO 7653-1985) and splined drive shaft (DIN ISO 14) are specifically designed for direct mounting on commercial vehicle power take-offs (PTO), eliminating the need for complex adapter components. This simplifies assembly and reduces installation time and cost. The compact footprint fits various commercial vehicle chassis layouts.

3. No Case Drain Line Required—Simplified System Design

The A17FO fixed displacement pump requires no case drain line. This design feature simplifies system piping, eliminates potential leak points, and reduces installation and maintenance costs. The pump’s excellent self-priming capability further reduces system complexity.

4. Easy Reversal of Rotation Direction

Changing the pump’s direction of rotation is accomplished simply by swapping the reducing threaded fitting on the pressure port—no need to disassemble the entire pump or mounting plate. This design feature allows the same pump to adapt to engines with different rotation directions, reducing inventory variety and providing maximum flexibility for equipment manufacturers and end users.

5. Low Noise Operation and High Volumetric Efficiency

The A17FO series incorporates an optimized port plate design and bent-axis rotary group structure, delivering low operating noise and excellent suction characteristics. The flow rate is directly proportional to drive speed and displacement, providing stable and predictable output. Precision-lapped piston-cylinder interfaces maintain high volumetric efficiency at 350 bar nominal pressure with high overall efficiency and long service life.

Application Areas

• Tipper trucks and street sweepers

• HGV loading cranes

• Tankers and municipal vehicles

• Refuse collection vehicles and sanitation equipment

• Truck-mounted cranes and aerial work platforms

• Commercial vehicle PTO-driven hydraulic pumps

• Drop-in replacement for Parker F1 or Sunfab SCP pump installations

Expert Maintenance Tips

1. Pre-Installation Model Verification

Verify the complete model code on the pump nameplate before installation. The A17FO063/10NLWK0E81-0 is configured for left-hand rotation (counter-clockwise viewed from shaft end), with a DIN ISO 14 splined drive shaft (8×32×35) and ISO 7653-1985 special mounting flange. Ensure drive shaft-to-PTO output shaft concentricity within 0.05 mm to prevent premature seal failure from radial loads.

2. Hydraulic Fluid and Cleanliness Requirements

Use HLP mineral oil-based anti-wear hydraulic oil conforming to DIN 51524-2. Fluid cleanliness should be ISO 4406 20/18/15 or better for normal operation; 19/17/14 or better for high-temperature operation (90°C-103°C). The high-pressure side (port A) must maintain a minimum pressure of at least 10 bar to prevent damage to the axial piston unit. Flush the system thoroughly before first operation.

3. Pressure Port Installation Notes

The pressure port is pre-assembled with a reducing threaded fitting at delivery. It must be retightened to the specified torque for the corresponding thread size before installation. The direction of rotation is determined by the position of the reducing threaded fitting screwed into the working port. To change the direction of rotation, simply replace the pressure port fitting—no pump disassembly required. Pressure port specification: G 3/4″ (BSP); suction port: G 1″ (BSP).

4. First Start-Up Procedure

Before first start, confirm the suction line is properly sealed and the reservoir is at the correct level. Run at 500-800 rpm unloaded for 5-10 minutes to purge air. Since this pump requires no case drain line, there is no case drain back pressure to monitor during startup. Confirm no suction line leakage before gradually increasing speed and loading to rated conditions. During the warm-up phase, operate at p ≤ 0.7×pnom, n ≤ 0.5×nnom for no more than 15 minutes.

5. Routine Maintenance

Replace hydraulic oil filters every 2,000 operating hours or annually. Periodically inspect the pump exterior for leaks and check the drive shaft spline and shaft seal for wear. If flow decline or pressure instability is observed, prioritize inspection of the valve plate and piston-cylinder wear. Recommended overhaul interval: no more than 8,000 operating hours or 5 years. Always refer to the Bosch Rexroth official instruction manual RE 91520-01-B during installation.