TG0240MS030AAAB Parker TG Orbit Motor 238 cm³/rev

Product Overview

The TG0240MS030AAAB, TG0335MS030AAAA, TG0405US081AAMF and TG0625EW440AAAB are Parker Hannifin TG Series Torqmotor™ low-speed, high-torque orbital hydraulic motors.

Parker’s official TG documentation identifies the platform as a gerotor-style LSHT motor family featuring a heavy-duty 60:40 spline-geometry drive link, roller-vane technology and a sealed commutator. Parker states that the TG powertrain can transmit more than 13,000 lb-in of torque, while continuous working fluid provides internal cooling and lubrication.

The supplied models cover four verified displacement sizes:

• TG0240 — 238 cm³/rev / 14.5 in³/rev
• TG0335 — 337 cm³/rev / 20.6 in³/rev
• TG0405 — 405 cm³/rev / 24.7 in³/rev
• TG0625 — 623 cm³/rev / 38.0 in³/rev.

For aftermarket supply, the appropriate terminology is Parker TG replacement, compatible replacement or interchangeable replacement motor. Your manufacturing value proposition can then emphasize mechanical interchangeability and 100% simulated working-condition testing without representing the product as a genuine Parker OEM assembly.

Technical Specifications

TG0240MS030AAAB

• Full part number: TG0240MS030AAAB
• Series: Parker TG
• Geometric displacement: 238 cm³/rev / 14.5 in³/rev
• Maximum speed: 393 rpm
• Maximum continuous flow: 76 L/min / 20 GPM
• Maximum intermittent flow: 95 L/min / 25 GPM
• Maximum continuous differential pressure: 207 bar / 3000 psi
• Maximum intermittent differential pressure: 276 bar / 4000 psi
• Maximum supply pressure: 300 bar / 4350 psi
• Maximum continuous torque: 677 N·m / 5,991 lb-in
• Maximum intermittent torque: 913 N·m / 8,081 lb-in
• Maximum output power: 32 kW / 44 HP
• Minimum continuous starting torque: 582 N·m / 5,152 lb-in
• Minimum intermittent starting torque: 776 N·m / 6,865 lb-in
• Mounting: MS — Magneto
• Porting: 7/8-14 SAE
• Shaft code: 03
• Shaft: 1-1/4″ keyed
• Rotation: 0 — Standard Rotation
• Option: AAAB — Standard, No Paint
• MS reference weight: 15.1 kg / 33.3 lb
• MS reference length: 206.5 mm / 8.13 in.

TG0335MS030AAAA

• Full part number: TG0335MS030AAAA
• Series: Parker TG
• Geometric displacement: 337 cm³/rev / 20.6 in³/rev
• Maximum speed: 277 rpm
• Maximum continuous flow: 76 L/min / 20 GPM
• Maximum intermittent flow: 95 L/min / 25 GPM
• Maximum continuous differential pressure: 207 bar / 3000 psi
• Maximum intermittent differential pressure: 276 bar / 4000 psi
• Maximum supply pressure: 300 bar / 4350 psi
• Maximum continuous torque: 964 N·m / 8,533 lb-in
• Maximum intermittent torque: 1,297 N·m / 11,479 lb-in
• Maximum output power: 30 kW / 41 HP
• Minimum continuous starting torque: 843 N·m / 7,458 lb-in
• Minimum intermittent starting torque: 1,117 N·m / 9,889 lb-in
• Mounting: MS — Magneto
• Porting: 7/8-14 SAE
• Shaft: 1-1/4″ keyed
• Rotation: 0 — Standard Rotation
• Option: AAAA — Standard, Black Paint
• MS reference weight: 15.9 kg / 35.1 lb
• MS reference length: 217.7 mm / 8.57 in.

TG0405US081AAMF

• Full part number: TG0405US081AAMF
• Series: Parker TG
• Geometric displacement: 405 cm³/rev / 24.7 in³/rev
• Maximum speed: 232 rpm
• Maximum continuous flow: 76 L/min / 20 GPM
• Maximum intermittent flow: 95 L/min / 25 GPM
• Maximum continuous differential pressure: 172 bar / 2500 psi
• Maximum intermittent differential pressure: 241 bar / 3500 psi
• Maximum supply pressure: 300 bar / 4350 psi
• Maximum continuous torque: 942 N·m / 8,336 lb-in
• Maximum intermittent torque: 1,342 N·m / 11,877 lb-in
• Maximum output power: 27 kW / 37 HP
• Minimum continuous starting torque: 791 N·m / 7,002 lb-in
• Minimum intermittent starting torque: 1,145 N·m / 10,133 lb-in
• Mounting: US — Wheel, Standard, 7/8-14 SAE
• Shaft code: 08 — 1-1/4″ tapered
• Rotation code: 1 — Reverse Timed Manifold
• AAMF: the current public Parker options table does not define this complete suffix, so its detailed function should be verified against the nameplate/original order.
• US reference weight: 16.9 kg / 37.2 lb
• US reference length: 225.0 mm / 8.86 in.

TG0625EW440AAAB

• Full part number: TG0625EW440AAAB
• Series: Parker TG
• Geometric displacement: 623 cm³/rev / 38.0 in³/rev
• Maximum speed: 182 rpm
• Maximum continuous flow: 76 L/min / 20 GPM
• Maximum intermittent flow: 114 L/min / 30 GPM
• Maximum continuous differential pressure: 121 bar / 1750 psi
• Maximum intermittent differential pressure: 155 bar / 2250 psi
• Maximum supply pressure: 300 bar / 4350 psi
• Maximum continuous torque: 986 N·m / 8,727 lb-in
• Maximum intermittent torque: 1,291 N·m / 11,424 lb-in
• Maximum output power: 20 kW / 27 HP
• Minimum continuous starting torque: 895 N·m / 7,924 lb-in
• Minimum intermittent starting torque: 1,165 N·m / 10,312 lb-in
• Shaft code: 44 — 14-tooth spline, 12/24 pitch, 12 mm tapped end
• Rotation: 0 — Standard Rotation
• Option: AAAB — Standard, No Paint
• EW mounting code: not independently defined in the current public Parker standard ordering table.
• Weight and installation length are therefore not stated here for this exact EW configuration.

Control Configuration

• Motor type: Fixed-displacement LSHT orbital hydraulic motor
• Displacement control: Fixed displacement
• Speed control: Hydraulic flow control
• Direction control: A/B hydraulic port pressure
• Rotation code 0: Standard Rotation
• Rotation code 1: Reverse Timed Manifold.

Parker’s TF/TG/TH/TL service procedure specifies:

• B-port pressure → clockwise rotation
• A-port pressure → counter-clockwise rotation

when viewed from the output shaft end.

Key Technical Advantages

Heavy-Duty 60:40 Drive Link

The TG Series uses Parker’s 60:40 spline-geometry drive link. Parker states that the powertrain can transmit more than 13,000 lb-in of torque, providing a robust torque-transfer architecture for demanding LSHT applications.

Roller-Vane and Sealed-Commutator Technology

Parker uses roller vanes and a sealed commutator to support high efficiency and smooth low-speed performance. These features are particularly relevant where stable low-speed motion and high starting torque are required.

Continuous Working-Fluid Lubrication and Cooling

The TG powertrain is continuously washed by high-flow working fluid. This supports lubrication and heat removal from internal drive components during operation.

Broad Displacement Range

The TG architecture covers 141 to 959 cm³/rev, allowing engineers to select displacement according to system flow, output speed and torque without changing to a completely different motor platform.

Multiple Mounting and Shaft Options

The Parker ordering system separates mounting/ports, shaft, rotation and option codes. The supplied configurations demonstrate this flexibility through Magneto, Wheel Mount, keyed, tapered and spline-shaft combinations.

High Torque Density

The four supplied displacement sizes provide published continuous torque ratings from 677 to 986 N·m, with intermittent torque up to 1,291 N·m, depending on model and operating conditions.

The Parker public catalog does not provide detailed steel grades, hardness values, machining tolerances or metallurgical treatment data for these complete part numbers, so those values are intentionally not claimed here.

Application Areas

Typical applications for Parker TG Series LSHT motors include:

• Commercial zero-turn mowers
• Agricultural equipment
• Harvesting machinery
• Industrial sweepers
• Conveyor drives
• Mobile hydraulic machinery
• Rotary drives
• Material-handling equipment
• Road and asphalt equipment
• Winch and auxiliary drives

Parker’s current material specifically highlights TG within commercial zero-turn mower hydrostatic transmissions and describes the family as a medium-duty, high-torque gerotor motor platform.

Expert Maintenance Tips

Hydraulic Fluid Viscosity

Parker’s TF/TG/TH/TL service manual specifies that hydraulic-fluid viscosity should not fall below 50 SSU and recommends the hydraulic fluid specified by the equipment manufacturer.

Filtration

Parker recommends 40–50 micron filtration. Clean hydraulic fluid is important for controlling wear in the rotor, commutation and drive components.

Oil Temperature

The Parker service procedure specifies a maximum operating oil temperature of 93.3°C / 200°F.

Avoid Mixing Hydraulic Oils

Parker warns that mixing oil types or using unapproved fluids may deteriorate seals. When changing fluid, completely drain the old oil and flush the system with clean oil where appropriate.

Verify the Full Part Number

For:

• TG0240MS030AAAB
• TG0335MS030AAAA
• TG0405US081AAMF
• TG0625EW440AAAB

do not verify a replacement only by the displacement number.

Confirm:

• Mounting code
• Port configuration
• Shaft code
• Rotation code
• Option code
• Shaft geometry
• Port orientation
• Installation dimensions
• Continuous differential pressure
• Intermittent differential pressure
• Required flow

Parker’s ordering architecture explicitly combines these fields into the complete motor configuration.

TG0405US081AAMF Code Verification

For the supplied TG0405 configuration, Parker documentation directly supports:

• US = Wheel, Standard, 7/8-14 SAE
• 08 = 1-1/4″ tapered shaft
• 1 = Reverse Timed Manifold

The AAMF option suffix should be verified from the original nameplate/order because it is not defined in the current public standard option table.

TG0625EW440AAAB Code Verification

The following parts of the configuration are confirmed:

• 0625 = 623 cm³/rev
• 44 = 14-tooth spline, 12/24 pitch, 12 mm tapped end
• 0 = Standard Rotation
• AAAB = Standard, No Paint

The EW mounting code should not be automatically rewritten as WE or assigned another mounting description without original Parker documentation.

100% Simulated Working-Condition Testing

A replacement motor validation program can include:

• No-load startup
• Forward/reverse rotation
• Low-speed stability
• Flow response
• Differential-pressure response
• External leakage
• Shaft operation
• Mechanical interface verification

Parker’s own service procedure recommends using a test stand when available after service, which provides a strong engineering basis for your company’s 100% Simulated Working-Condition Testing claim.