TF0240 TF0280 Parker Torqmotor Hydraulic Motor LSHT 240cc 280cc

Product Overview

The Parker TF Series is a Torqmotor™ low-speed, high-torque (LSHT) orbital hydraulic motor featuring proven gerotor technology with shaft distribution flow, delivering high starting torque, smooth operation, superior volumetric efficiency, and exceptional side load capacity.

The TF Series is available in displacements ranging from 81 to 477 cm³/rev. This page covers key models including TF0240US080AAAT, TF0240US080AABP, TF0240US080AAAB, and the TF0280 Series, with displacements from 240 to 280 cm³/rev and continuous torque output up to 680 Nm, with intermittent torque up to 920 Nm.

The TF Series is available in flange or wheel mounts, featuring a high-pressure shaft seal as standard. Its innovative design eliminates the need for a case drain. With superior side load capability (17,792 N on flange mounts, 26,688 N on wheel mounts) and smooth low-speed operation, the TF Series is ideal for medium-duty applications such as vehicle propulsion, augers, chain drives, winches, and boom rotation.

As a premium aftermarket alternative to original Parker Torqmotor TF Series orbital motors, this product is manufactured to strict Parker OEM specifications, ensuring 100% interchangeability with original equipment—direct bolt-on replacement with zero modification required. Every motor undergoes 100% simulated load testing prior to shipment to verify performance and reliability under rated operating conditions.

Technical Specifications 

TF0240US080AAAT

• Product Series: Parker Torqmotor™ TF Series Medium-Duty Orbital Motor

• Geometric Displacement: 240 cm³/rev (14.6 in³/rev)

• Maximum Speed (Continuous): Approx. 290 RPM

• Maximum Flow: Approx. 75 L/min (20 GPM)

• Continuous Torque: Approx. 680 Nm (6,195 lb-in)

• Maximum Pressure Differential: Approx. 205 bar (2,973 PSI)

• Rotation: Counterclockwise

• Mounting: Wheel mount

• Shaft Type: 1-1/4″ tapered shaft with Woodruff key

• Port Size: 7/8″-14 SAE

• Design Type: Gerotor

• Body Material: Cast Iron

• Control Type: Bi-directional rotation, hydraulic control

• Country of Origin: Made in Czech Republic

TF0240US080AABP

• Product Series: Parker Torqmotor™ TF Series Medium-Duty Orbital Motor

• Geometric Displacement: 240 cm³/rev (14.6 in³/rev)

• Maximum Pressure Differential (Intermittent/Continuous): 280 bar / 207 bar

• Maximum Flow (Intermittent/Continuous): 95 L/min / 76 L/min

• Maximum Torque (Intermittent/Continuous): Up to 920 Nm / Up to 680 Nm

• Maximum Operating Speed (at Intermittent Flow): 200-750 RPM

• Mounting: Flange or wheel mount options available

• Shaft Options: Multiple configurations available

• Design Type: Gerotor

• Body Material: Cast Iron

• Control Type: Bi-directional rotation, hydraulic control

• Country of Origin: Made in Czech Republic

TF0240US080AAAB

• Product Series: Parker Torqmotor™ TF Series Medium-Duty Orbital Motor

• Geometric Displacement: 240 cm³/rev (14.6 in³/rev)

• Maximum Speed (Continuous): Approx. 290 RPM

• Maximum Flow: Approx. 75 L/min (20 GPM)

• Continuous Torque: Approx. 680 Nm (6,195 lb-in)

• Maximum Pressure Differential: Approx. 205 bar (2,973 PSI)

• Mounting: Wheel mount

• Shaft Type: 1-1/4″ tapered shaft with Woodruff key

• Port Size: 7/8″-14 SAE

• Design Type: Gerotor

• Body Material: Cast Iron

• Control Type: Bi-directional rotation, hydraulic control

• Country of Origin: Made in Czech Republic

TF0280 Series

• Product Series: Parker Torqmotor™ TF Series Medium-Duty Orbital Motor

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

• Maximum Speed (Continuous): 240 RPM

• Continuous Torque: Approx. 560 Nm (4,956 lb-in)

• Continuous Pressure: Approx. 122 bar (1,766 PSI)

• Maximum Pressure Differential (Intermittent): 280 bar (4,000 psi)

• Maximum Flow: 76-95 L/min

• Maximum Torque (Intermittent): Up to 920 Nm

• Design Type: Gerotor, 60:40 spline powertrain

• Body Material: Cast Iron

• Control Type: Bi-directional rotation, hydraulic control

• Shaft Diameter: 31.75 mm (1.25″) nominal

Key Technical Advantages

1. Superior Side Load Capacity
The TF Series carries up to 17,792 N (4,000 lb) side load on flange mounts and up to 26,688 N (6,000 lb) on wheel mounts. This capability allows direct mounting to wheels, sprockets, or drive mechanisms without additional support bearings, significantly simplifying system architecture.

2. Patented 60:40 Spline Geometry – High-Strength Powertrain
The TF Series powertrain features patented 60:40 spline geometry for superior strength and durability. All splines are continuously flushed with cool hydraulic fluid for extended service life.

3. Roller Vanes & Sealed Commutation – High Volumetric Efficiency
The TF Series incorporates roller vanes and sealed commutation technology, ensuring high volumetric efficiency, smooth low-speed operation, and extended service life. This design minimizes internal leakage, maintaining efficient power transmission over extended operation.

4. Patented High-Pressure Shaft Seal – No Case Drain Required
The TF Series features a high-pressure shaft seal as standard, capable of withstanding full system pressure and continuously washed in cool fluid for long life. The innovative design eliminates the need for a case drain, greatly simplifying hydraulic circuit layout and reducing potential leak points.

5. Smooth Extra-Low Speed Operation & Continuous Spline Lubrication
The TF Series utilizes proven gerotor technology, delivering smooth operation even at extremely low speeds. Continuous oil flow across internal splines ensures ongoing lubrication, dramatically extending spline service life.

6. Premium Materials & Manufacturing Standards
TF Series motors feature high-strength cast iron housings with precision-ground gerotor gear sets. Every unit is manufactured to strict Parker OEM specifications, ensuring 100% interchangeability with original equipment. Made in the Czech Republic with dependability based on high-quality design and manufacturing.

Application Areas

• Vehicle Propulsion Systems: Skid steer attachments, mini and walk-behind skid steers

• Mowing Equipment: Zero-turn mowers, golf course maintenance equipment

• Agricultural Machinery: Combine harvesters, sprayers, potato/tomato/nut/leafy vegetable specialty harvesters

• Construction Equipment: Trenchers, tool carriers

• Material Handling: Conveyors, scissor lifts

• Municipal & Environmental: Sweepers, wood chippers, snow removal, salt and sand spreaders

• Industrial Equipment: Winches, augers, portable irrigation systems, post hole augers

• Oil & Gas: Oil and gas blender trucks

Expert Maintenance Tips

Installation Guidelines:

1. Model Verification: Before installation, verify the motor model and physical dimensions on the original equipment. This series includes multiple models including TF0240US080AAAT, TF0240US080AABP, TF0240US080AAAB, and TF0280 series variants—different models may vary in displacement, torque output, and mounting interfaces. Ensure correct model selection, particularly shaft type (tapered, straight key, splined) and mounting flange configuration.

2. Fluid Cleanliness: Maintain system fluid cleanliness to ISO 4406 18/16/13 minimum. Inlet fluid must pass through 10μm absolute filtration. Gerotor motors are sensitive to fluid contamination—insufficient cleanliness will directly impact gerotor gear set life and volumetric efficiency.

3. Case Pressure Management: Although the TF Series features a no-case-drain design with patented high-pressure shaft seals, ensure case pressure does not exceed recommended limits (typically 2-3 bar). Excessive case pressure may damage shaft seals.

4. Shaft Alignment: Precise alignment between motor output shaft and driven load is critical. Misalignment significantly reduces bearing life and increases side loading. While the TF Series offers superior side load capacity, optimal alignment is still recommended.

5. Mounting Bolt Torque: Mounting bolts must be torqued to Parker-specified values and re-torqued after initial operation.

Routine Maintenance:

1. Leak Inspection: Regularly inspect housing and shaft seal areas for oil seepage. Replace seals immediately if leakage is detected.

2. Fluid Change Interval: Initial fluid change at 100 hours, thereafter every 1000 operating hours or annually, whichever comes first.

3. Operating Duty Monitoring: Operate motors within continuous duty ratings. The TF Series offers intermittent pressure up to 280 bar (4,000 psi), but intermittent duty (e.g., 6 seconds per minute) and peak duty are permitted for short durations only.

4. Spline Lubrication Verification: The TF Series relies on continuous internal oil flow for spline lubrication. Ensure uninterrupted system oil supply—never operate under oil-starved conditions.