Product Overview
The F11-005-MB-CV-K-000-0000-0T and F11-010-MB-CV-K-000-0000-00 are core models within the 005 and 010 frame sizes of Parker Hannifin’s F11 Series of small frame bent axis fixed displacement pumps/motors, manufactured by Parker PMDE (Pump & Motor Division Europe, Trollhättan, Sweden). The F11 Series is a classic high-performance bent axis fixed displacement heavy-duty pump/motor series under Parker’s VOAC brand, suitable for numerous applications in both open and closed loop circuits.
F11 Series motors employ a unique spherical piston concept that allows them to be used at unusually high shaft speeds, with operating pressures to 420 bar (intermittent) providing for high output power capability. The 40° angle between shaft and cylinder barrel allows for a very compact, lightweight motor/pump. The laminated piston ring offers important advantages such as low internal leakage and thermal shock resistance. F11 motors produce very high torque at start-up as well as at low speeds. The unique timing gear design synchronizes shaft and cylinder barrel, making the F11 very tolerant to high ‘G’ forces and torsional vibrations.
Model code breakdown: F11 = series designation; 005/010 = displacement size 4.9/9.8 cc/rev; MB = mounting flange and shaft end configuration; CV = valve plate type; K = seal material code; 000-0000 = standard variant; 0T/00 = variant suffix. The F11 Series offers seven displacement sizes: 5, 6, 8, 10, 12, 14, and 19, with displacement range of 4.9 – 19.0 cc/rev.
As drop-in replacements, both models are 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 catalogue (HY17-8249/US) and verified supplier technical pages:
F11-005-MB-CV-K-000-0000-0T Technical Specifications:
Complete Model: F11-005-MB-CV-K-000-0000-0T
Brand: Parker Hannifin / former VOAC
Product Series: F11 Series small frame bent axis fixed pump/motor
Product Type: Bent axis fixed displacement piston pump/motor
Displacement: 4.9 cm³/rev (0.30 cu in/rev)
Max Intermittent Pressure: 420 bar (6000 psi)
Max Continuous Pressure: 350 bar (5075 psi)
Max Intermittent Speed: 14,000 rpm
Max Continuous Speed: 12,800 rpm
Min Continuous Speed: 50 rpm
Max Intermittent Input Flow: 69 L/min
Max Continuous Input Flow: 63 L/min
Theoretical Torque (@ 100 bar): 7.8 N·m (5.8 lb-ft)
Direction of Rotation: Bidirectional
Cylinder/Shaft Angle: 40°
Mounting: CETOP mounting flange, 2-hole
Shaft End: Cylindrical shaft, Ø18 mm with key
Port Connection: BSP 3/4″ working ports
Body Material: Cast Iron
Seal Material: K code (Nitrile)
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: 400 kg (880 lb)
Weight: Approx. 4.7 kg
Mounting Position: Any position
F11-010-MB-CV-K-000-0000-00 Technical Specifications:
Complete Model: F11-010-MB-CV-K-000-0000-00
Brand: Parker Hannifin
Product Series: F11 Series small frame bent axis fixed pump/motor
Product Type: Bent axis fixed displacement piston pump/motor
Displacement: 9.8 cm³/rev (0.60 cu in/rev)
Max Intermittent Pressure: 420 bar (6000 psi)
Max Continuous Pressure: 350 bar (5075 psi)
Max Intermittent Speed: 11,200 rpm
Max Continuous Speed: 10,200 rpm
Min Continuous Speed: 50 rpm
Max Intermittent Input Flow: 110 L/min
Theoretical Torque (@ 100 bar): 15.6 N·m
Cylinder/Shaft Angle: 40°
Mounting: CETOP mounting flange, Ø100 mm, 2-hole 125 mm
Shaft End: Cylindrical shaft, Ø20 mm, DIN 6885 key
Port Connection: G 3/4″ working ports
Weight: Approx. 7.7 kg
F11 Series Other Model Specifications Reference:
F11-006: Displacement 6.0 cm³/rev, max intermittent speed 11,200 rpm
F11-008: Displacement 8.0 cm³/rev, max intermittent speed 11,200 rpm
F11-012: Displacement 12.5 cm³/rev, max intermittent speed 10,300 rpm
F11-014: Displacement 14.3 cm³/rev, max intermittent speed 9,900 rpm, theoretical torque 22.7 N·m@100 bar
F11-019: Displacement 19.0 cm³/rev, max intermittent speed 8,900 rpm, theoretical torque 30.2 N·m@100 bar
Note: Specifications are based on Parker Hannifin official technical catalogue HY17-8249/US (March 2004) and verified supplier technical pages (Salhydro, Phoenix Hydraulics, GS Global Resources, Winkler Shop, etc.). The F11 Series covers a complete product matrix with displacements from 4.9 to 19.0 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 F11 Series employs Parker’s unique spherical piston concept, allowing the motor/pump to operate at unusually high shaft speeds. The F11-005 achieves maximum intermittent speeds up to 14,000 rpm, and the F11-010 up to 11,200 rpm. The 40° angle between shaft and cylinder barrel results in a very compact, lightweight motor/pump, delivering higher power density at the same displacement. This design makes the F11 Series particularly suitable for mobile hydraulic applications requiring high speeds, such as chain saws and aerial work platforms. F11 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 F11 very tolerant to high ‘G’ forces and torsional vibrations.
2. Laminated Piston Rings with Low Internal Leakage Design
The F11 Series 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 420 bar high-pressure conditions.
3. Gear Synchronization and Heavy-Duty Bearing System for High Reliability and Long Life
The F11 Series employs a proven gear synchronization design that precisely synchronizes shaft and cylinder barrel. Heavy-duty roller bearings withstand substantial external axial and radial shaft loads, with maximum radial shaft load capacity of 400 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. The F11’s have a simple and straightforward design with very few moving parts, making them very reliable pumps/motors.
4. Compact Lightweight Structure with Flexible Mounting Configuration
The F11-005 weighs only approximately 4.7 kg, and the F11-010 approximately 7.7 kg, achieving outstanding power-to-weight ratio. Multiple mounting options including CETOP, ISO, and SAE configurations, along with flexible shaft end and port configurations, meet diverse system integration requirements. The pump version has highly engineered valve plates for increased self-priming speed and low noise, available with left and right hand rotation.
5. 100% Simulation-Based Testing and Drop-In Interchangeability
Every F11 Series unit undergoes 100% simulation-based testing prior to shipment. Test protocols cover displacement calibration, torque output verification, pressure holding performance, and internal leakage detection. As drop-in replacements, the series is fully compatible with the OEM Parker specification in mounting dimensions (CETOP mounting flange), shaft end configuration (cylindrical shaft with key), and performance characteristics, enabling direct replacement without hydraulic circuit or mounting bracket modification.
Application Areas
Chain Saws & Forestry Machinery: Chainsaw drive for logging and forestry equipment, utilizing ultra-high speed for rapid cutting — one of the most typical F11 Series applications
Aerial Work Platforms: Boom slew and platform leveling hydraulic drive systems
Agricultural Machinery: Harvester reel drives, sprayer hydraulic systems
Material Handling: Forklift attachment drives, conveyor drives
Industrial Hydraulic Systems: Machine tool hydraulic drives, high-speed test rig drives
Construction Machinery: Mini excavator auxiliary drives, skid steer loader hydraulic systems
Marine & Offshore: Marine deck machinery hydraulic drives, winch transmission
Energy Equipment: Wind turbine pitch systems, hydraulic test equipment
Expert Maintenance Tips
Pre-Installation Checks:
Verify mounting flange (CETOP 2-hole, Ø100 mm) alignment with equipment mounting surface; ensure surface is clean and free of burrs
Inspect cylindrical shaft (Ø18 mm / Ø20 mm) mating surface for wear or corrosion; apply appropriate grease
The unit must be fully filled with clean hydraulic oil via the case drain port prior to installation to prevent dry friction damage to piston/cylinder and bearings during startup
Confirm BSP 3/4″ or G 3/4″ port seals are intact; tighten diagonally to specified torque
The drain connection must be connected in both pump and motor operation!
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 case drain line for unobstructed flow; return back pressure must not exceed allowable limits
Periodically inspect shaft seals for aging or leakage
In high-speed applications, consider installing Power Boost device
Periodically monitor unit operating temperature and noise level; abnormal increase may indicate internal wear or fluid contamination
Troubleshooting Guide:
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 (350 bar continuous / 420 bar intermittent); inspect piston rings and cylinder bores for wear
Abnormal noise or vibration: Check case oil fill level; verify suction line is unobstructed; check mounting bolt tightness
External leakage: Inspect shaft seal for aging or damage; verify case drain line back pressure is within allowable range
Efficiency decrease at high speed: Inspect laminated piston ring wear; replace piston ring components if necessary
