F12-080-MF-IV-D-000-0000-P0 Parker Piston Motor 80cc 480 bar

Model Number	F12-080-MF-IV-D-000-0000-P0, F12-080

Product Description

Product Overview

The F12-080-MF-IV-D-000-0000-P0 (Part No. 3786110 / 78341028) is a core model within the Parker Hannifin F12 Series of large frame bent axis fixed displacement piston motors, specifically the 080 frame size. The F12 Series is a high-performance bent axis fixed displacement heavy-duty motor/pump series produced by Parker PMDE (Pump & Motor Division Europe, Trollhättan, Sweden), suitable for numerous applications in both open and closed loop circuits.

F12 Series motors employ a unique spherical piston concept that allows them to be used at unusually high shaft speeds, with operating pressures to 480 bar providing for high output power capability. The 40° angle between shaft and cylinder barrel allows for a very compact, lightweight motor. The laminated piston ring offers important advantages such as low internal leakage and thermal shock resistance. The well-proven gear synchronization and double tapered bearing concept give a very robust and reliable motor in demanding applications.

Model code breakdown: F12 = series designation; 080 = displacement size 80.4 cc/rev; MF = mounting flange and port configuration; IV = valve plate configuration; D = DIN 5480 splined shaft (W40x2x18x9g); 000-0000 = standard variant; P0 = version identifier.

As a drop-in replacement, the motor is fully compatible with the OEM Parker specification in mounting interface, shaft end configuration, and performance characteristics, enabling direct replacement without hydraulic circuit or mounting bracket modification. Every unit undergoes 100% simulation-based testing prior to shipment, covering displacement calibration, torque output, pressure holding, and internal leakage.

Technical Specifications

All parameters below are based on Parker Hannifin official technical documentation and verified supplier technical pages:

Complete Model: F12-080-MF-IV-D-000-0000-P0
Part Number: 3786110 / 78341028
Brand: Parker Hannifin
Product Series: F12 Series large frame bent axis fixed displacement motor/pump
Product Type: Bent axis fixed displacement piston motor
Displacement: 80.4 cm³/rev (4.91 cu in/rev)
Max Intermittent Pressure: 480 bar (6962 psi)
Max Continuous Pressure: 420 bar (6092 psi)
Max Intermittent Speed: 5300 rpm
Max Continuous Speed: 4800 rpm
Min Continuous Speed: 50 rpm
Max Intermittent Input Flow: 426 L/min
Max Continuous Input Flow: 386 L/min
Theoretical Torque (@ 100 bar): 127.6 N·m (94.1 lb-ft)
Cylinder/Shaft Angle: 40°
Piston Count: 7 or 9 piston design
Mounting: ISO / SAE / CETOP / Cartridge
Shaft End: D — DIN 5480 splined shaft (W40x2x18x9g)
Mounting Flange: ISO 4-hole 127.2 x 127.2 mm
Port Connection: SAE 6000 psi flange, 1″ main ports (A/B)
Drain Ports: M22 x 1.5 (ports C and D)
Body Material: Cast Iron
Seal Material: FPM (Viton), high pressure/high temperature
Hydraulic Fluid: Standard mineral oil-based hydraulic fluid
Fluid Temperature Range: -40°C to +115°C
Max Kinematic Viscosity: 1000 cSt
Min Kinematic Viscosity: 8 cSt
Cleanliness Requirement: ISO 4406 20/18/13
Max Radial Shaft Load: 1900 kg (4180 lb)
Mass Moment of Inertia: 8.4 x 10⁻³ kg·m²
Weight: Approx. 26 kg
Mounting Position: Any position

Note: Specifications are based on Parker Hannifin official technical documentation (MSG30-8249-US, MSG30-5520-M1/UK) and verified supplier technical pages (Phoenix Hydraulics, Hydracraft, Granit Parts, etc.). The F12 Series encompasses 11 displacement specifications: F12-030, -040, -060, -080, -090, -110, -125, -152, -162, -182, and -250, with displacement range of 30 – 242 cm³/rev. Always verify against the complete model code and consult the latest Parker official technical documentation during selection.

Key Technical Advantages

1. Unique Spherical Piston Design with 40° Bent Axis Structure for High Speed and High Pressure Performance

The F12-080 employs Parker’s unique spherical piston concept, allowing the motor to operate at unusually high shaft speeds with maximum intermittent speeds up to 5300 rpm. The 40° angle between shaft and cylinder barrel results in a very compact, lightweight motor, delivering higher power density at the same displacement. This design makes the F12 Series particularly suitable for industrial and mobile hydraulic applications requiring high speed and high power output. F12 motors produce very high torque at start-up as well as at low speeds, and the unique timing gear design synchronizes shaft and cylinder barrel, making the F12 very tolerant to high ‘G’ forces and torsional vibrations.

2. Laminated Piston Rings with Low Internal Leakage Design

The F12-080 features laminated piston ring design, offering important advantages such as low internal leakage and thermal shock resistance. The laminated structure maintains excellent sealing performance under high temperature and high pressure conditions, effectively reducing volumetric losses, improving overall efficiency, and reducing greenhouse gas emissions and fuel consumption. This design enables the motor to maintain stable volumetric efficiency under 480 bar high-pressure conditions.

3. Gear Synchronization and Heavy-Duty Bearing System for High Reliability and Long Life

The F12 Series employs a proven gear synchronization design that precisely synchronizes shaft and cylinder barrel. Heavy-duty cylindrical roller bearings withstand substantial external axial and radial shaft loads, with maximum radial shaft load capacity of 1900 kg. The unique piston locking, timing gear, and bearing setup, combined with a limited number of moving parts, constitute a very robust design with long service life and proven reliability.

4. Compact Lightweight Structure with High Pressure and Large Flow Output

The F12-080 weighs only approximately 26 kg at 80.4 cc/rev displacement, achieving an outstanding power-to-weight ratio. Maximum intermittent input flow reaches 426 L/min, with maximum continuous input flow of 386 L/min, combined with 480 bar maximum intermittent pressure, enabling powerful output in medium-to-large hydraulic systems. Multiple mounting options including ISO, SAE, CETOP, and cartridge configurations, along with flexible shaft end and port configurations, meet diverse system integration requirements.

5. 100% Simulation-Based Testing and Drop-In Interchangeability

Every F12-080 undergoes 100% simulation-based testing prior to shipment. Test protocols cover displacement calibration, torque output verification, pressure holding performance, and internal leakage detection. As a drop-in replacement, the motor is fully compatible with the OEM Parker specification in mounting dimensions (ISO 4-hole flange 127.2 x 127.2 mm), shaft end configuration (DIN 5480 splined shaft W40x2x18x9g), and performance characteristics, enabling direct replacement without hydraulic circuit or mounting bracket modification.

Application Areas

Construction Machinery: Excavator swing drives, rotary drilling rig power heads, compactor travel drives
Agricultural Machinery: Harvester travel drives, sprayer hydraulic systems, tractor hydraulic transmission
Forestry Equipment: Forestry harvester saw motors, forwarder hydraulic drive systems
Material Handling: Crane hoisting and slewing mechanisms, forklift hydraulic drives
Mining Equipment: Underground transport vehicle drives, drilling rig hydraulic systems
Industrial Hydraulic Systems: Machine tool hydraulic drives, test rigs, metallurgical equipment hydraulic transmission
Energy & Marine: Wind power hydraulic systems, marine deck machinery hydraulic drives
Railway & Municipal Equipment: Track maintenance equipment, municipal sweeper hydraulic drives

Expert Maintenance Tips

Pre-Installation Checks:

Verify mounting flange (ISO 4-hole 127.2 x 127.2 mm) alignment with equipment mounting surface; ensure surface is clean and free of burrs
Inspect DIN 5480 splined shaft (W40x2x18x9g) mating surface for wear or corrosion; apply appropriate grease
The motor must be fully filled with hydraulic oil via the housing drain port prior to installation to prevent dry friction damage to piston/cylinder during startup
Confirm SAE 6000 psi flange port connections are secure and seals are intact

Operational Maintenance:

Maintain hydraulic oil cleanliness to ISO 4406 20/18/13 or better; use pressure filters with ≤ 10 μm filtration accuracy
Recommended fluid: mineral oil-based anti-wear hydraulic oil; maintain kinematic viscosity within 8 – 1000 cSt
Maintain fluid temperature within -40°C to +115°C; avoid overheating
Periodically check housing drain line for unobstructed flow; return back pressure must not exceed allowable limits
Periodically verify port flange connections are secure and FPM seals are not aged
In high-speed applications, consider installing Power Boost device

Troubleshooting Guide:

Motor fails to rotate or speed abnormal: Check hydraulic system supply pressure; verify directional valve operation; check oil cleanliness
Insufficient output torque: Confirm system pressure reaches rated value (420 bar continuous / 480 bar intermittent); inspect piston/cylinder and laminated piston rings for wear
Abnormal noise or vibration: Check housing oil fill level; verify suction line is unobstructed; check mounting bolt tightness
External leakage: Inspect shaft seal (FPM high pressure/high temperature type) for aging or damage; verify drain line back pressure is within allowable range
Efficiency decrease at high speed: Inspect laminated piston ring wear; replace piston ring components if necessary

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