F11-150 Parker Hydraulic Motor | 350 Bar Bent-Axis | 3703588

Product Overview

The F11-150 is a bent-axis, fixed-displacement axial piston motor from Parker’s (originally VOAC Hydraulics) F11 series, featuring a displacement of 150.8 cm³/rev. Manufactured to the original Trollhättan, Sweden design lineage, this motor delivers proven reliability in high-pressure, high-speed and shock-load applications across construction, forestry, marine and industrial hydraulic systems.

Every F11-150 unit undergoes 100% simulated operating-condition bench testing prior to shipment, covering pressure cycling, speed stepping and thermal variation. The mounting flange, shaft end and port configuration are dimensionally identical to the original Parker/Volvo F11-150, ensuring true drop-in interchangeability with zero modification required to the installation interface.

Technical Specifications

• Model: F11-150

• Part Numbers: F11-150-MF-CH-K (3703588), F11-150-MF-CN-D-000 (3708296), F11-150-MF-CH-D-000 (3707008)

• Type: Bent-axis axial piston, fixed displacement

• Displacement: 150.8 cm³/rev

• Rated Pressure (Continuous): 350 bar (5,100 psi)

• Peak Pressure (Intermittent): 420 bar (6,100 psi)

• Max Speed (Continuous): ~2,700–3,200 rpm (varies by configuration)

• Max Speed (Intermittent): ~3,000–3,500 rpm

• Control Type: Fixed displacement (no variable mechanism)

• Theoretical Torque: ~2.40 Nm/bar

• Number of Pistons: 7

• Rotation: Bi-rotational

• Mounting Flange: SAE / CETOP

• Port Connection: SAE 1 1/2″

• Weight: ~70 kg

• Main Circuit Max Temperature: 80°C

• Main Circuit Min Temperature: -40°C

Key Technical Advantages

1. 40° Bent-Axis with Spherical Piston Design

The 40° angle between shaft and cylinder barrel enables a compact, lightweight motor. Spherical pistons with laminated piston rings deliver low internal leakage and excellent thermal shock resistance, maintaining stable volumetric efficiency under rapid pressure cycling.

2. Timing Gear Synchronization

The unique timing gear design synchronizes the drive shaft and cylinder barrel, making the F11-150 highly tolerant to high G-forces and torsional vibration—ideal for travel drives and drilling head applications.

3. Heavy-Duty Roller Bearings

The output shaft is supported by two tapered roller bearings, permitting substantial external axial and radial shaft loads for extended bearing life and overall reliability.

4. 100% Simulated Load Testing & Drop-In Interchangeability

Each unit is bench-tested under simulated operating conditions prior to dispatch. Mounting flange, shaft end and port dimensions match the original Parker/Volvo F11-150 exactly, enabling direct replacement without any interface modification.

5. High Starting Torque & Low-Speed Smoothness

F11 motors produce high torque at startup and low speeds, making them suitable for winch, swing drive and other high-torque-start applications. Low-speed operation is smooth without stick-slip.

Application Areas

• Construction: excavator swing drives, track travel drives, crane winches

• Forestry: feller buncher saw head drives, forwarder travel motors

• Marine: deck cranes, anchor winches, mooring winches

• Mining & Drilling: drill head drives, crusher drives

• Industrial: shredders, industrial conveyors

• Agriculture: combine harvester hydraulic drive systems

Expert Maintenance Tips

1. Pre-Installation: Verify system oil cleanliness meets ISO 4406 18/16/13 or better. Do not connect the motor during flushing. Ensure coupling alignment deviation does not exceed 0.05 mm to prevent abnormal bearing wear.

2. Drain Port Management: The drain line must return to the reservoir independently—never share with other return lines. Drain back pressure must not exceed 2 bar. The drain line end must remain submerged. The housing must be filled with oil before first startup.

3. Gear Backlash Check: For F11-150 through F11-250, gear backlash should be maintained at 0.10–0.30 mm. Excessive backlash causes synchronization failure and abnormal noise; insufficient backlash leads to excessive wear.

4. Leakage Monitoring: Run the system at 150–200 bar until normal operating temperature is reached, then measure drain flow for one minute. Normal F11-150 drain flow is approximately 1.2–1.5 l/min. If flow reaches 3.0 l/min or higher, internal piston group or valve plate wear is indicated—immediate service is required.

5. Oil Temperature Control: Main circuit continuous operating temperature should be maintained below 80°C. High temperatures accelerate seal aging and oil oxidation; install temperature monitoring on the return line.