F11-019 Parker Hydraulic Motor 19cc 420bar

Model Number	F11-019-SB-CS-K-201-MVL-0 (3787858), F11-019-SB-XS-X-284-MUVL-B0

Product Description

Product Overview

The Parker F11-019 is a fixed-displacement bent-axis axial piston hydraulic motor with a nominal displacement of 19.0 cm³/rev. Parker’s official F11/F12 documentation describes the series as heavy-duty bent-axis motor/pump units designed for demanding hydraulic power transmission applications in both open- and closed-loop circuits.

The F11 architecture incorporates Parker’s spherical piston concept, laminated piston rings, timing gear synchronization and heavy-duty roller bearings. Parker states that the laminated piston ring helps reduce internal leakage and improves thermal shock resistance, while the timing gear synchronizes the shaft and cylinder barrel and improves tolerance to high G-forces and torsional vibration. Heavy-duty roller bearings are designed to accommodate substantial external axial and radial shaft loads.

The product references supplied for this page are:

F11-019-SB-XS-X-284-MUVL-B0
F11-019-SB-CS-K-201-MVL-0

Public configuration references associate these versions with Parker part numbers 3788635 and 3787858, respectively.

For replacement projects, the complete ordering code should be checked rather than relying only on the F11-019 family designation. Mounting configuration, shaft execution, port arrangement, valve option, seals and special-version details must be verified against the original unit.

Technical Specifications

Brand: Parker Hannifin
Series: F11
Model: F11-019
Design: Fixed-displacement bent-axis axial piston hydraulic motor
Displacement: 19.0 cm³/rev
Maximum intermittent pressure: 420 bar
Maximum continuous pressure: 350 bar
Maximum intermittent speed: 8,900 rpm
Maximum continuous speed: 8,100 rpm
Minimum continuous speed: 50 rpm
Maximum intermittent input flow: 169 L/min
Maximum continuous input flow: 154 L/min
Maximum main-circuit temperature: 80 °C
Minimum main-circuit temperature: -40 °C
Weight: approximately 11 kg
Intermittent duty definition: maximum 6 seconds in any one-minute period, according to Parker’s published specifications.
Displacement control: Fixed displacement; this is not a variable-displacement proportional-control motor.
Ordering code 1: F11-019-SB-XS-X-284-MUVL-B0
Part number 1: 3788635.
Ordering code 2: F11-019-SB-CS-K-201-MVL-0
Part number 2: 3787858.

Key Technical Advantages

1. High-Speed Bent-Axis Design

The Parker F11 architecture uses a spherical piston design intended for high-speed operation. The F11-019 is rated for up to 8,900 rpm intermittent and 8,100 rpm continuous, providing a high speed capability for compact hydraulic drive systems.

2. Laminated Piston Ring Technology

Parker identifies the laminated piston ring as an important design feature for reducing internal leakage and improving thermal shock resistance. This is particularly relevant to high-speed hydraulic operation where internal losses and thermal stability can directly influence service life.

3. Timing Gear Synchronization

The timing gear synchronizes the shaft and cylinder barrel, helping the F11 tolerate high G-forces and torsional vibration. This makes the architecture well suited to mobile equipment and mechanically demanding environments.

4. Heavy-Duty Roller Bearings

Heavy-duty roller bearings allow the F11 series to accommodate substantial external radial and axial shaft loads. Correct shaft alignment and load management remain essential for long service life.

5. High Pressure and Power Density

The F11-019 provides a 350 bar continuous pressure rating and 420 bar intermittent pressure rating, combined with a compact bent-axis architecture. This provides a useful balance between pressure capability, rotational speed and installed package size.

6. Make-Up / Anti-Cavitation Valve Option

The supplied F11-019-SB-XS-X-284-MUVL-B0 configuration includes the MUVL option. Parker documentation identifies MUVL/MUVR as make-up / anti-cavitation valve options for applicable F11 configurations.

Application Areas

Typical application areas include:

Forestry machinery
Hydraulic saw systems and saw heads
Construction machinery
Road-building equipment
Agricultural machinery
Material-handling equipment
Mobile hydraulic power systems
High-speed hydraulic transmission systems
Open-loop and closed-loop hydraulic power transmission applications

Parker’s own F11 product information identifies applications including agriculture, construction, forestry, material handling and other mobile equipment.

Expert Maintenance Tips

1. Maintain Hydraulic Cleanliness

High-speed axial piston motors are sensitive to contamination. Before installation, clean the hydraulic circuit, flush contaminated lines and confirm that filtration is operating correctly.

2. Respect the Continuous Pressure Rating

The 420 bar value is the maximum intermittent rating, not a continuous operating target. Continuous system design should remain within Parker’s published 350 bar continuous pressure rating.

3. Verify Inlet and Fluid Conditions at High Speed

High motor speed requires proper hydraulic filling conditions, sufficient flow and effective heat management. Poor inlet conditions or excessive temperature can accelerate wear and increase the risk of cavitation-related damage.

4. Check Shaft Alignment Carefully

Although the F11 uses heavy-duty roller bearings, incorrect coupling alignment or excessive external shaft loading can significantly reduce bearing and seal life.

5. Verify the Complete Ordering Code

For replacement applications, do not match the product based only on “F11-019.” The complete ordering code must be checked to verify mounting, shaft, ports, valve configuration, sealing arrangement and special-version details.

6. Start the Replacement Motor Progressively

After installation, operate the system first at low pressure and low load. Confirm rotation, leakage, noise and temperature before gradually increasing the operating load and speed.

Replacement and Quality Assurance

For F11-019 / 3788635 / 3787858 replacement requirements, our engineering team can evaluate the original unit for dimensional, interface and application compatibility.

Our replacement process can include:

Installation dimension verification
Port and shaft compatibility review
Pressure and speed range verification
Make-up / anti-cavitation valve configuration review
No-load and loaded performance testing
Leakage and temperature inspection
Noise and operational stability verification

Each replacement unit can undergo 100% simulated working-condition testing before shipment to reduce commissioning risk and improve field replacement reliability.

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