F11-005-RB-CV-K-000-000-0 Parker Hydraulic Motor 4.9cc 420bar

Product Overview

The F11 series is a member of the Parker F11/F12 small-frame bent-axis fixed displacement axial piston motor family. The F11 series shares the 40° bent-axis design philosophy with unique spherical pistons and laminated piston rings, offering displacements from 4.9 cc/rev to 19.0 cc/rev. F11 motors are fixed displacement units that can be used as either motors or pumps in both open and closed-loop circuits.

The F11 series delivers maximum intermittent operating pressures up to 420 bar (6,100 psi) and continuous operating pressures up to 350 bar (5,075 psi), with speeds up to 14,000 rpm. Core design features include precision gear synchronization and heavy-duty roller bearings, providing exceptional vibration resistance and high radial load capacity.

Our product provides a fully interchangeable direct replacement for the original Parker F11 series motor, with identical mounting dimensions, port specifications, and shaft configurations. Every unit undergoes 100% simulated duty-cycle testing—performance-validated under rated pressure, peak pressure, and full speed range to ensure volumetric efficiency, mechanical efficiency, torque output, noise levels, and thermal characteristics meet or exceed original OEM specifications.

Model 1: F11-005-RB-CV-K-000-000-0

Technical Specifications 

• Model: F11-005-RB-CV-K-000-000-0

• Brand: Parker Hannifin

• Series: F11 Small Frame Series

• Type: Bent-Axis Fixed Displacement Axial Piston Motor

• Displacement: 4.9 cm³/rev

• Max. Intermittent Pressure: 420 bar (6,090 psi)

• Max. Continuous Pressure: 350 bar (5,075 psi)

• Max. Intermittent Speed: 14,000 rpm

• Max. Continuous Speed: 12,800 rpm

• Min. Continuous Speed: 50 rpm

• Max. Intermittent Flow: 69 L/min

• Max. Continuous Flow: 63 L/min

• Theoretical Torque @ 100 bar: 7.8 Nm

• Max. Drain Oil Temperature: 115°C

• Min. Ambient / Oil Temperature: -40°C

• Mass Moment of Inertia: 0.16 × 10⁻³ kg·m²

• Max. Noise Level: 80 dBA

• Radial Load Capacity: 400 kg (880 lb)

• Direction of Rotation: Bi-Rotational

• Mounting Flange: RB = Right-Hand Splined Shaft Configuration

• Shaft: Splined Shaft (SAE/ISO Standard)

• Seals: FKM (Fluorocarbon Rubber) High-Temperature Elastomers

• Housing Material: High-Strength Cast Iron

• Weight: Approx. 4.7 kg

Key Technical Advantages

1. 40° Bent-Axis Design with Spherical Pistons
The F11 series features Parker’s signature 40° bent-axis design with unique spherical pistons and laminated piston rings. The 40° angle between the drive shaft and cylinder barrel delivers a compact, lightweight structure. The spherical piston design significantly reduces internal leakage, improves volumetric efficiency, and provides excellent thermal shock resistance.

2. Gear Synchronization & Heavy-Duty Roller Bearings
Precision timing gears ensure exact phase synchronization between shaft and cylinder barrel, providing exceptional tolerance to high G-forces and torsional vibrations. Heavy-duty roller bearings support substantial external axial and radial shaft loads.

3. Ultra-High Speed Capability
Thanks to lightweight pistons and compact rotating components, the F11-005 delivers maximum intermittent speeds up to 14,000 rpm—class-leading performance among bent-axis piston motors in its displacement range.

4. Low Internal Leakage & High Efficiency
Laminated piston rings minimize internal leakage while delivering high overall efficiency. The simple, direct design with few moving parts makes the F11 series exceptionally reliable.

5. Compact Design & Wide Temperature Range
Compact housing with excellent power-to-weight ratio. Operating temperature range from -40°C to +115°C enables reliable performance in both extreme cold and high-temperature environments.

Application Areas

• High-Speed Saw Drives: Chain saws, circular saws

• Agricultural Machinery: Combines, windrowers, balers

• Construction Equipment: Mini-excavators, skid-steer loaders

• Forestry Machinery: Logging equipment

• Industrial Equipment: Industrial hydraulic systems, winch drives

• Closed & Open Circuits: Hydrostatic transmission systems

Expert Maintenance Tips

1. Shaft seals and all O-rings must be replaced after every disassembly.

2. Pre-lubricate all moving parts with clean hydraulic fluid before assembly.

3. Purge all air from the motor housing before initial start-up—ensure the case drain line returns directly to the reservoir with the outlet below the oil level to prevent air entrapment and bearing starvation.

4. Monitor case drain flow regularly—an abnormal increase indicates potential piston ring or cylinder barrel wear.

5. Recommended maximum system operating temperature should not exceed 80°C; drain oil temperature should not exceed 115°C.

6. Ensure hydraulic system filtration meets β₁₀ ≥ 75 (ISO 4406 cleanliness code不低于 18/16/13) to maximize motor service life.

7. Weight is approx. 4.7 kg—use proper handling procedures during installation and removal.

8. The RB suffix denotes right-hand (clockwise) rotation. Verify rotation direction matches system requirements before installation.

Model 2: F11-010-SB-CS-K-000-0000-00

Technical Specifications 

• Model: F11-010-SB-CS-K-000-0000-00

• Brand: Parker Hannifin

• Series: F11 Small Frame Series

• Type: Bent-Axis Fixed Displacement Axial Piston Motor

• Displacement: 9.8 cm³/rev

• Max. Intermittent Pressure: 420 bar (6,090 psi)

• Max. Continuous Pressure: 350 bar (5,075 psi)

• Max. Intermittent Speed: 11,200 rpm

• Max. Continuous Speed: 10,200 rpm

• Min. Continuous Speed: 50 rpm

• Max. Intermittent Flow: 110 L/min

• Max. Continuous Flow: 100 L/min

• Theoretical Torque @ 100 bar: 15.6 Nm

• Max. Drain Oil Temperature: 115°C

• Min. Ambient / Oil Temperature: -40°C

• Mass Moment of Inertia: 0.39 × 10⁻³ kg·m²

• Max. Noise Level: 80 dBA

• Radial Load Capacity: 400 kg (880 lb)

• Direction of Rotation: SB = Left-Hand (Counter-Clockwise)

• Mounting Flange: CETOP / ISO / SAE Standard

• Shaft: Splined Shaft

• Seals: CS = Special Seal Configuration (High-Temperature / Special Fluid Applications)

• Connection: G 3/4″ BSP

• Housing Material: High-Strength Cast Iron

• Weight: Approx. 6.5 kg

Key Technical Advantages

1. Optimized Displacement-Torque Balance
With 9.8 cm³ displacement, the F11-010 strikes an ideal balance between high-speed capability (11,200 rpm intermittent) and torque output (15.6 Nm/100 bar)—one of the most versatile models in the F11 series.

2. 40° Bent-Axis Design with Spherical Pistons
The F11 series features Parker’s signature 40° bent-axis design with unique spherical pistons and laminated piston rings. The 40° angle delivers a compact, lightweight structure.

3. High Speed Capability & Power Boost Option
The F11-010 delivers continuous speeds up to 10,200 rpm. The optional Power Boost feature is available for high-speed applications to reduce mechanical losses.

4. Low Internal Leakage & High Efficiency
Laminated piston rings minimize internal leakage while delivering high overall efficiency.

5. Compact Design & Wide Temperature Range
Compact housing with excellent power-to-weight ratio. CS special seals support extended temperature ranges and special fluid compatibility.

Application Areas

• High-Speed Saw Drives: Chain saws, circular saws

• Agricultural Machinery: Combines, windrowers, balers

• Construction Equipment: Mini-excavators, skid-steer loaders

• Forestry Machinery: Logging equipment

• Industrial Equipment: Industrial hydraulic systems, winch drives

• Closed & Open Circuits: Hydrostatic transmission systems

Expert Maintenance Tips

1. Shaft seals and all O-rings must be replaced after every disassembly.

2. Pre-lubricate all moving parts with clean hydraulic fluid before assembly.

3. Purge all air from the motor housing before initial start-up—ensure the case drain line returns directly to the reservoir with the outlet below the oil level to prevent air entrapment and bearing starvation.

4. Monitor case drain flow regularly—an abnormal increase indicates potential piston ring or cylinder barrel wear.

5. Recommended maximum system operating temperature should not exceed 80°C; drain oil temperature should not exceed 115°C.

6. Ensure hydraulic system filtration meets β₁₀ ≥ 75 (ISO 4406 cleanliness code不低于 18/16/13) to maximize motor service life.

7. Weight is approx. 6.5 kg—use proper handling procedures during installation and removal.

8. The SB suffix denotes left-hand (counter-clockwise) rotation. Verify rotation direction matches system requirements before installation—select RB suffix for right-hand rotation if required.