TF0280MS1VOAAAB Parker Torqmotor TF Motor 280cc 920Nm

Product Overview

The TF0280MS1VOAAAB is the mid-displacement flagship model in the Parker Torqmotor™ TF Series of medium-duty gerotor hydraulic motors, featuring a geometric displacement of 280 cm³/rev (17.1 in³/rev). The TF Series spans 12 displacements from 81 to 477 cm³/rev (TF0080 through TF0475) and is Parker’s core medium-duty low-speed high-torque motor line, engineered for continuous operation under severe conditions.

The core engineering feature of the TF Series is its unique clutch design. Unlike conventional orbit motors, when no pressure is applied, the motor section is automatically separated from the output shaft/bearing package by springs, allowing the output shaft to freewheel. When hydraulic pressure is applied to either working port, the springs compress, coupling the motor to the output shaft for normal operation. This design makes the TF Series ideal for applications requiring a freewheeling output shaft during part of the duty cycle, such as vehicle propulsion and winch drives — when the hydraulic system is off, the wheel or winch drum can rotate freely without motor drag.

The TF0280MS1VOAAAB employs patented 60:40 spline geometry with all splines continuously flushed with cool fluid, combined with roller vanes and sealed commutation technology for high volumetric efficiency, smooth low-speed operation, and extended service life. The high-pressure shaft seal is standard, capable of withstanding full system pressure, and the innovative design eliminates the need for a case drain. Designed and manufactured in Greeneville, Tennessee, USA.

Series Model Notes: This batch covers Parker Torqmotor™ TF, TG, and TE series, spanning medium-duty to heavy-duty applications:

• TF0280MS1VOAAAB / TF0280AA010AAAA / TF0280AA020AAAA / TF0280AA020AAAB: TF Series 280 cc/rev displacement range with various mounting flange, shaft, and port configurations

• TF0360: TF Series 364 cc/rev displacement, max continuous speed 200 rpm, intermittent 260 rpm, continuous pressure drop 130 bar, intermittent 190 bar

• TG Series: Medium-heavy duty, displacements 141-959 cm³/rev, intermittent pressure to 280 bar, torque to 1490 N·m, shaft sizes to 34.9 mm

• TE Series: Light duty, displacements 36-390 cm³/rev, standard roller bearings, dynamic side load up to 6672 N

Technical Specifications

TF0280MS1VOAAAB (TF Series)

• Model: TF0280MS1VOAAAB (Parker Torqmotor™ TF Series)

• Series: TF Series; Medium Duty Motor

• Displacement: 280 cm³/rev (17.1 in³/rev)

• Max Continuous Pressure Differential: 138 bar (2000 PSID)

• Max Intermittent Pressure Differential: 207 bar (3000 PSID)

• Max Supply Pressure: 300 bar (4350 PSID)

• Max Continuous Output Torque: 509 N·m (4502 lb-in)

• Max Intermittent Output Torque: 794 N·m (7029 lb-in)

• Max Continuous Speed: 334 rpm

• Max Continuous Flow: 76 L/min (20 gpm)

• Max Intermittent Flow: 95 L/min (25 gpm)

• Max Output Power: 27.8 kW (37.3 HP)

• Control Type: Roller vane commutation with clutch freewheeling function; bidirectional rotation; speed infinitely adjustable via hydraulic flow

• Mounting: Wheel mount, front brake configuration

• Output Shaft: 31.75 mm (1-1/4 in) tapered

• Port Size: 7/8-14 SAE

• Max Side Load (at key): 16000 N (3597 lb)

• Optional Feature: 207 bar (3000 PSI) internal bidirectional relief

• Material: Cast iron housing, black paint

• Weight: Approx. 15.5 kg

Data source: Hydradyn LLC distributor technical data (TF0280LS080BBBC specs) and Parker TF Series official performance data sheet (HY13-1590-005/US,EU). Simultaneous operation at maximum speed and maximum pressure is not permitted. Intermittent values permitted max 10% of each minute.

TF0280AA010AAAA (TF Series)

• Model: TF0280AA010AAAA (Parker Torqmotor™ TF Series)

• Series: TF Series

• Displacement: 280 cm³/rev (17.1 in³/rev)

• Continuous Pressure Differential: 138 bar

• Intermittent Pressure Differential: 207 bar

• Max Continuous Output Torque: 509 N·m

• Max Intermittent Output Torque: 794 N·m

• Max Continuous Speed: 334 rpm

• Mounting: Standard flange mount

• Output Shaft: 31.75 mm tapered

• Port Size: 7/8-14 SAE

• Control Type: Roller vane commutation; bidirectional rotation

Data source: Parker TF Series product listing and standard configuration parameters. Consult the Parker official product page for specific mounting and shaft configuration details.

TF0280AA020AAAA / TF0280AA020AAAB (TF Series)

• Model: TF0280AA020AAAA / TF0280AA020AAAB (Parker Torqmotor™ TF Series)

• Series: TF Series

• Displacement: 280 cm³/rev (17.1 in³/rev)

• Continuous Pressure Differential: 138 bar

• Intermittent Pressure Differential: 207 bar

• Max Continuous Output Torque: 509 N·m

• Max Intermittent Output Torque: 794 N·m

• Max Continuous Speed: 334 rpm

• Mounting: Standard flange mount, various port configuration options

• Control Type: Roller vane commutation; bidirectional rotation

Data source: Parker TF Series product catalog and distributor product listings.

TF0360 (TF Series)

• Model: TF0360 (Parker Torqmotor™ TF Series)

• Series: TF Series

• Displacement: 364 cm³/rev (22.2 in³/rev)

• Max Continuous Pressure Differential: 130 bar (1885 psi)

• Max Intermittent Pressure Differential: 190 bar (2756 psi)

• Max Continuous Output Torque: 590 N·m (5257 lb-in)

• Max Intermittent Output Torque: 880 N·m (7788 lb-in)

• Max Continuous Speed: 200 rpm

• Max Intermittent Speed: 260 rpm

• Max Continuous Flow: 76 L/min (20 gpm)

• Max Intermittent Flow: 95 L/min (25 gpm)

• Max Output Power: 20.0 kW (26.8 HP)

• Control Type: Roller vane commutation with clutch freewheeling function

• Mounting: Standard flange mount or wheel mount

• Output Shaft: 31.75 mm tapered

• Port Size: 7/8-14 SAE

Data source: Parker TF Series official performance data sheet (HY13-1590-005/US,EU).

TG Series (Overview)

• Series: TG Series; Medium Duty Motor

• Displacement Range: 141-959 cm³/rev (8.6-58.5 in³/rev)

• Max Intermittent Pressure: 280 bar

• Max Intermittent Output Torque: 1490 N·m (12,600 lb-in)

• Max Continuous Output Torque: 400-1150 N·m

• Shaft Size: 34.9 mm nominal

• Max Continuous Flow: 115 L/min

• Mounting: Flange or wheel mount

• Material: Cast iron housing

Data source: Parker TG Series official product page and distributor technical data.

TE Series (Overview)

• Series: TE Series; Light Duty Motor

• Displacement Range: 36-390 cm³/rev

• Max Intermittent Pressure Differential: 120-190 bar

• Max Continuous Pressure Differential: 85-140 bar

• Max Intermittent Output Torque: 71-648 N·m

• Max Continuous Output Torque: 55-467 N·m

• Max Intermittent Speed: 190-1160 rpm

• Max Dynamic Side Load: 6672 N (at key)

• Shaft Diameter: 25.4 mm nominal

• Bearing Type: Roller bearings (the only motor in its class with this feature)

• Control Type: Disc valve distribution; bidirectional rotation

• No Case Drain Required: Yes

Data source: Parker TE Series official product page.

Key Technical Advantages

1. Patented Clutch Freewheeling Design with 60:40 Spline Geometry

The core technical advantage of the TF Series is its patented clutch mechanism. When no hydraulic pressure is applied, springs separate the motor section from the output shaft/bearing package, allowing the output shaft to freewheel — critical for applications requiring towing or free coasting (such as vehicle propulsion and winches). When pressure is applied to either working port, the springs compress and the motor couples to the output shaft. The TF Series powertrain uses patented 60:40 spline geometry, with all splines continuously flushed with cool fluid, significantly reducing spline wear and extending drive train service life.

2. Roller Vane Technology with Sealed Commutation for High Volumetric Efficiency

The TF Series employs roller vanes in the rotor-stator set with sealed commutation technology. Rolling vanes travel along the stator curve, dramatically reducing internal friction losses compared to conventional gear-type configurations. The sealed commutation structure ensures the distribution interface maintains tight contact throughout the operating cycle, maintaining high volumetric efficiency under rated conditions and remaining stable over extended service life.

3. High-Pressure Shaft Seal with No Case Drain Required

The TF Series features a standard high-pressure shaft seal capable of withstanding full system pressure, and its innovative design completely eliminates the need for an external case drain line. The shaft seal is continuously washed in cool fluid for long life. This design directly reduces hose, fitting, and installation labor costs for machine builders, with a decisive advantage in space-constrained compact drive systems.

4. Cast Iron Housing with High Side Load Capacity

The TF Series features cast iron housings providing excellent rigidity and durability. Flange mount configurations can carry up to 17792 N side load, while wheel mount configurations can carry up to 26688 N side load. The 31.75 mm nominal shaft diameter with tapered shaft design allows the motor to directly drive chain sprockets, gears, and other mechanisms subject to significant radial forces without additional bearing housings.

Application Areas

• Agricultural Machinery: Combine harvester reel drives, grain harvesting conveyors, specialty harvesters (potato, tomato, nut, grape, etc.), seeders, sprayers

• Construction Equipment: Skid-steer attachment drives, compact track chassis drives, trenchers, post hole augers

• Material Handling: Conveyor drives, winch and hoist mechanisms, auger drives

• Municipal Equipment: Snow removal auger drives, street sweeper brush drives, mower deck drives

• Industrial Drives: Aerial work platform swing drives, oil and gas blender truck drives

• Forestry Equipment: Wood chipper drives, skidder winch drives

Expert Maintenance Tips

Installation Guidelines:

• Before installation, verify system oil cleanliness meets ISO 18/13 or NAS Class 9 or better. The TF Series roller vane and sealed commutation structure is sensitive to particulate contamination — install a 10μm filter upstream of the motor inlet.

• The TF0280MS1VOAAAB uses a 31.75 mm tapered shaft. Ensure cleanliness and contact area of the shaft and equipment-side tapered interface during installation. Shaft alignment must be within 0.05mm using a flexible coupling. Tighten the shaft end nut to Parker’s specified torque value to ensure reliable taper fit.

• Ensure the O-ring is intact and undamaged when installing 7/8-14 SAE ports. Note port orientation compatibility with hydraulic line connections during installation.

• The TF Series requires no external case drain. No drain circuit is required during installation, but ensure system back-pressure does not exceed the shaft seal design limit.

• During initial commissioning, run at no more than 30% of maximum working pressure for at least 30 minutes of no-load break-in.

Operational Maintenance:

• Use 10W40 hydraulic oil with viscosity of approximately 43.1 cSt (200 SUS) at 54°C (130°F). Normal operating oil temperature should not exceed 82°C (180°F).

• Inspect volumetric efficiency every 2,000 hours or every 12 months. If efficiency drops by more than 10% of rated value, disassemble and inspect the roller vane rotor set and sealed commutation assembly.

• The TF Series clutch mechanism is a sealed design and typically requires no field maintenance. However, if freewheeling function fails or clutch engagement response is delayed after extended operation, contact professional service personnel to inspect the spring mechanism.

• Periodically inspect equipment-end shaft support wear and tapered shaft fastening condition to ensure alignment remains within tolerance.