TG0335MS030AAAA Parker TG Orbit Motor 337 cm³/rev

Product Overview

The TG0240MS030AAAA, TG0335MS030AAAA, TG0405US081AAMF and TG0625EW440AAAB are configurations within the Parker Hannifin TG Series Torqmotor™ LSHT hydraulic motor family.

Parker’s official documentation describes the TG Series as a low-speed, high-torque motor platform featuring a heavy-duty powertrain, a 60:40 spline-geometry drive link, roller-vane rotor technology and a sealed commutator. The complete powertrain is continuously washed and lubricated by high-flow working fluid to support durability and smooth low-speed operation.

The official TG ordering documentation confirms the following displacement codes:

• 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 applications, these motors can be positioned as Parker TG replacement / compatible replacement motors. Any claim of direct interchangeability should still be validated against the original mounting, shaft, porting, rotation and option codes.

Technical Specifications

TG0240MS030AAAA

• Model: TG0240MS030AAAA
• 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 / 5991 lb-in
• Maximum intermittent torque: 913 N·m / 8081 lb-in
• Maximum output power: 32 kW / 44 HP
• Minimum continuous starting torque: 582 N·m / 5152 lb-in
• Minimum intermittent starting torque: 776 N·m / 6865 lb-in
• Mounting: Magneto
• Porting: 7/8-14 SAE
• Shaft: 1-1/4″ keyed
• Rotation code: 0, standard rotation
• Option code: AAAA
• Parker catalog documentation identifies AAAA as black paint.

TG0335MS030AAAA

• Model: 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 / 8533 lb-in
• Maximum intermittent torque: 1297 N·m / 11479 lb-in
• Maximum output power: 30 kW / 41 HP
• Minimum continuous starting torque: 843 N·m / 7458 lb-in
• Minimum intermittent starting torque: 1117 N·m / 9889 lb-in
• Mounting: Magneto
• Porting: 7/8-14 SAE
• Shaft: 1-1/4″ keyed
• Rotation code: 0, standard rotation
• Option code: AAAA
• Parker ordering information identifies AAAA as black paint.

TG0405US081AAMF

• Model: 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 / 8336 lb-in
• Maximum intermittent torque: 1342 N·m / 11877 lb-in
• Maximum output power: 27 kW / 37 HP
• Minimum continuous starting torque: 791 N·m / 7002 lb-in
• Minimum intermittent starting torque: 1145 N·m / 10133 lb-in
• US: Parker ordering documentation identifies this as a standard wheel configuration with 7/8-14 SAE porting.
• 08: 1-1/4″ tapered shaft.
• 1: Rotation code 1, associated with reverse/timed manifold configuration in Parker’s ordering system.
• AAMF: the functional definition of this exact option suffix is not explicitly documented in the current public Parker catalog; it should therefore be verified from the original nameplate or order record before publishing a detailed option claim.

TG0625EW440AAAB

• Model: 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 / 8727 lb-in
• Maximum intermittent torque: 1291 N·m / 11424 lb-in
• Maximum output power: 20 kW / 27 HP
• Minimum continuous starting torque: 895 N·m / 7924 lb-in
• Minimum intermittent starting torque: 1165 N·m / 10312 lb-in
• Shaft code 44: Parker documentation defines this as 14-tooth spline, 12/24 pitch, 12 mm tapped end.
• Option code AAAB: no paint.
• The complete EW mounting/port combination appears in Parker’s TG ordering ecosystem, but the current public standard table does not fully document every legacy E/W combination; confirm the original configuration before claiming a specific mounting or port arrangement.

Control Configuration

• Motor type: Fixed-displacement LSHT orbital hydraulic motor
• Displacement control: Fixed displacement
• Speed control: Hydraulic flow control
• Direction control: Hydraulic A/B port pressure
• Parker’s TF/TG/TH/TL service manual specifies that, viewed from the coupling-shaft/output end, pressure at B produces clockwise rotation while pressure at A produces counter-clockwise rotation.

Key Technical Advantages

1. Heavy-Duty 60:40 Drive Link Geometry

The TG Series powertrain incorporates Parker’s 60:40 spline geometry drive link, engineered for high torque transmission. Parker describes the overall TG architecture as capable of transmitting more than 13,000 lb-in of torque, while individual model limits remain determined by the specific displacement and operating data.

2. Roller-Vane Rotor Technology

The roller-vane rotor set reduces internal friction and supports controlled low-speed operation. Parker combines this architecture with a sealed commutator to maintain consistent hydraulic commutation and smooth torque delivery.

3. Sealed Commutator

The sealed commutator is an important part of the TG hydraulic distribution system. Its design supports stable volumetric performance and controlled operation under low-speed/high-load conditions.

4. Continuous Powertrain Lubrication

Parker specifies continuous washing of the internal powertrain by cool, high-flow working fluid. This assists internal lubrication and heat removal and is one of the design features supporting long service life.

5. High Torque at Low Speed

The TG family is designed specifically for LSHT applications. For example, Parker rates the TG0335 at 964 N·m continuous torque and the TG0625 at 986 N·m continuous torque under their published operating conditions.

6. Multiple Mounting and Shaft Configurations

Parker provides wheel, magneto and other mounting arrangements together with keyed, splined and tapered shafts. This flexibility is important when engineering a replacement motor for an existing machine without changing the mechanical installation envelope.

Application Areas

Typical TG Series applications include:

• Asphalt pavers
• Road construction machinery
• Agricultural equipment
• Harvesters
• Industrial sweepers
• Conveyor drives
• Material-handling equipment
• Refuse collection equipment
• Construction machinery
• Winch drives
• Mixing equipment
• Rotary drum drives
• Mobile hydraulic equipment
• Industrial auxiliary drives

The TG0625EW440AAAB configuration is also found in application records associated with asphalt paving equipment, although the actual replacement selection should always be verified against the machine hydraulic circuit, load and mounting dimensions.

Expert Maintenance Tips

Hydraulic Oil Viscosity

Parker’s service documentation states that hydraulic-fluid viscosity should not fall below 50 SSU. Use the fluid recommended by the equipment manufacturer.

Filtration

Parker recommends 40-50 micron filtration for the hydraulic system. Clean hydraulic fluid helps protect the rotor set, commutator, drive link and sealing components from accelerated wear.

Oil Temperature

The Parker service manual specifies a maximum operating temperature of 93.3°C / 200°F. Excessive heat can cause seals to shrink, harden or crack.

Do Not Mix Hydraulic Oils

Parker warns against mixing different hydraulic-fluid types. When changing oil, completely drain the existing fluid and flush the system with clean oil where appropriate.

Keep Ports and Connections Clean

Before disconnecting the motor, thoroughly clean the exterior around fittings and hose connections. Parker also recommends immediately plugging exposed ports and hydraulic lines to prevent contamination from entering the unit.

Replace Removed Seals

Parker recommends replacing removed seals and seal rings rather than reusing them during overhaul. Parker or OEM-approved service parts should be used for replacement.

Test the Motor After Service

Parker specifically recommends using a test stand, when available, to verify Torqmotor operation after service. This provides a logical engineering checkpoint for a replacement manufacturer’s 100% simulated working-condition testing program.

Verify the Complete Part Number

For TG replacement projects, never select a motor solely by displacement code such as TG0240, TG0335, TG0405 or TG0625.

Verify:

• Mounting code
• Porting code
• Shaft code
• Rotation code
• Option code
• Displacement
• Differential pressure
• Shaft geometry
• Port orientation
• Installation dimensions

Parker’s TG ordering architecture is explicitly based on the combination of series, displacement, mounting/ports, shaft, rotation and options, making the complete part number critical for replacement engineering.