F12-040-MS-SV-S-000-000-0 Parker Hydraulic Motor 40cc 480bar

Product Overview

The F12 series is a member of the Parker F11/F12 heavy-duty bent-axis fixed displacement axial piston motor family. The F12 series shares the same 40° bent-axis design philosophy as the F11 series, featuring unique spherical pistons with laminated piston rings, and offers a displacement range from 30 cc/rev to 250 cc/rev. F12 motors are fixed displacement units that can be used as either motors or pumps in both open and closed-loop circuits.

The F12 series delivers maximum intermittent operating pressures up to 480 bar and continuous operating pressures up to 420 bar, with speeds up to 7,300 rpm. Core design features include precision gear synchronization and double tapered roller bearings, providing exceptional vibration resistance and high radial load capacity. The 7 or 9-piston design provides high starting torque and smooth motor operation.

Our product provides a fully interchangeable direct replacement for the original Parker F12 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: F12-040-MS-SV-S-000-000-0

Technical Specifications 

• Model: F12-040-MS-SV-S-000-000-0

• Brand: Parker Hannifin

• Series: F12 Large Frame Series

• Type: Bent-Axis Fixed Displacement Axial Piston Motor

• Displacement: 40.0 cm³/rev (2.4 in³/rev)

• Max. Intermittent Pressure: 480 bar (6,960 psi)

• Max. Continuous Pressure: 420 bar (6,092 psi)

• Max. Continuous Speed: 6,100 rpm

• Max. Flow: Approx. 240–260 L/min

• Theoretical Torque @ 100 bar: 63.5 Nm

• Radial Load Capacity: 1,900 kg (4,180 lb)

• Max. Drain Oil Temperature: 115°C

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

• Max. Noise Level: 88 dBA

• Mounting Flange: SAE C 4-Bolt Flange

• Drive Shaft: SAE C 14-Tooth Splined Shaft (12/24 DP)

• Main Ports (A & B): 2 × 3/4″ ISO 6162 SAE Flange Ports (6000 psi rated)

• Drain Ports (C & D): 1 × 7/8″-14 UN & 1 × 3/4″-16 UN O-Ring Boss Ports

• Sealing Material: FKM (Viton) High-Temperature Elastomers

• Housing Material: High-Strength Cast Iron

• Weight: Approx. 16.5 kg (36.4 lbs)

Key Technical Advantages

1. 40° Bent-Axis Design with Spherical Pistons
The F12 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 axis 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 & Double Tapered Bearings
Precision timing gears ensure exact phase synchronization between shaft and cylinder barrel, providing exceptional tolerance to high G-forces and torsional vibrations. Double tapered roller bearings deliver radial load capacity up to 1,900 kg.

3. Ultra-High Pressure & High Speed Capability
The F12-040 delivers maximum intermittent pressure of 480 bar and continuous working pressure of 420 bar. Maximum continuous speed reaches 6,100 rpm. The combination of high pressure and high speed provides exceptional power density.

4. Low Internal Leakage & High Efficiency
Laminated piston rings minimize internal leakage while delivering high overall efficiency. The 7 or 9-piston design provides high starting torque and smooth motor operation.

5. Compact & Lightweight Design
Compact housing with excellent power-to-weight ratio. Weight is only 16.5 kg—offering significant weight advantages in its class.

Application Areas

• Marine Deck Machinery: Winches, anchor windlasses, capstans

• Offshore Oil & Gas: Exploration and production equipment

• Forestry Machinery: Harvesters, forwarders

• Construction Equipment: Heavy construction vehicles, rollers, pile drivers

• Industrial Machine Tools: High-speed auxiliary drives

• Agricultural Machinery: Combines, municipal utility vehicles

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. Maintain system filtration at or superior to ISO 20/18/13 standards. The F12 utilizes precision-engineered spherical pistons and laminated rings—particulate contamination is the primary cause of premature scoring.

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

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

7. Weight is approx. 16.5 kg—use proper handling procedures during installation and removal.

Model 2: F12-080-MF-IV-K-000-L130-P0

Technical Specifications 

• Model: F12-080-MF-IV-K-000-L130-P0

• Brand: Parker Hannifin

• Series: F12 Large Frame Series

• Type: Bent-Axis Fixed Displacement Axial Piston Motor

• Displacement: 80.4 cm³/rev (4.90 in³/rev)

• Max. Intermittent Pressure: 480 bar (6,960 psi)

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

• Max. Intermittent Speed: 5,300 rpm

• Max. Continuous Speed: 4,800 rpm

• Min. Continuous Speed: 50 rpm

• Max. Intermittent Flow: 426 L/min

• Max. Continuous Flow: 386 L/min

• Theoretical Torque @ 100 bar: 127.6 Nm

• Radial Load Capacity: 1,900 kg (4,180 lb)

• Max. Circuit Temperature: 80°C

• Min. Circuit Temperature: -40°C

• Mass Moment of Inertia: 8.4 × 10⁻³ kg·m²

• Shaft: K40 – Ø40 DIN 6885

• Connection: SAE 6000 1″

• Mounting Flange: Ø140 mm ISO 3019-2 4-bolt

• Orifice: L130 (1.3 mm standard option)

• Housing Material: High-Strength Cast Iron

• Weight: 26 kg

Key Technical Advantages

1. Optimized Displacement-Torque Balance
With 80.4 cm³ displacement, the F12-080 strikes an ideal balance between speed capability (5,300 rpm intermittent) and torque output (127.6 Nm/100 bar)—one of the most versatile models in the F12 series.

2. 40° Bent-Axis Design with Spherical Pistons
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. Ultra-High Pressure & High Speed Capability
Maximum intermittent pressure of 480 bar and continuous working pressure of 420 bar. Maximum intermittent speed of 5,300 rpm and continuous speed of 4,800 rpm. Features face and shaft port plate designs for high precision fluid distribution.

4. Gear Synchronization & Double Tapered Bearings
Precision timing gears and double tapered roller bearings provide exceptional vibration resistance and radial load capacity up to 1,900 kg.

5. Low Internal Leakage & High Efficiency
Laminated piston rings minimize internal leakage while delivering high overall efficiency. The 7 or 9-piston design provides high starting torque and smooth motor operation.

Application Areas

• Construction Equipment: Excavator and loader travel drives

• Road Construction Equipment: Rollers, pavers

• Agricultural Machinery: Large combines, balers

• Marine Machinery: Marine deck cranes, winches

• Forestry Machinery: Logging equipment

• Industrial Equipment: Industrial hydraulic systems, heavy material handling

• 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. Maintain system filtration at or superior to ISO 20/18/13 standards. Particulate contamination is the primary cause of premature scoring in precision F12 motors.

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

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

7. Weight is 26 kg—use proper lifting equipment during installation and removal.

8. The F12-080 features SAE 6000 1″ port connections (Ø140 mm ISO 3019-2 4-bolt flange)—ensure port sealing surfaces are clean and undamaged during installation.