TG0785EW440AAAB Parker TG0785 Orbital Hydraulic Motor

Product Overview

The Parker Torqmotor™ TG Series is an LSHT (Low-Speed High-Torque) orbital / gerotor hydraulic motor platform designed for mobile machinery, agriculture, conveyors, material handling and industrial rotary applications.

Parker’s official HY13-1590-012/US,EU TG Series catalog lists motor sizes from TG0140 through TG0960, covering geometric displacements from 141 to 959 cm³/rev. Parker highlights an extra-heavy-duty drive link with unique 60:40 spline geometry, roller vanes and a sealed commutator for torque transmission, efficiency and smooth low-speed operation.

The requested configurations include:

• TG0785EW440AAAB
• TG0335MS050
• TG0530MS050
• TG0625MS050

The official Parker displacement values are:

• TG0335 → 337 cm³/rev
• TG0530 → 528 cm³/rev
• TG0625 → 623 cm³/rev
• TG0785 → 786 cm³/rev

The three MS050 references supplied without suffix should be treated as incomplete search references. Parker’s official stocking document provides complete AAAB configurations for all three:

• TG0335MS050AAAB
• TG0530MS050AAAB
• TG0625MS050AAAB

and identifies the MS mounting/port architecture and shaft configuration.

Technical Specifications

TG0785EW440AAAB

• Brand: Parker Hannifin
• Product Family: Torqmotor™ TG Series
• Product Type: LSHT Orbital / Gerotor Hydraulic Motor
• Part Number: TG0785EW440AAAB
• Motor Size: TG0785
• Geometric Displacement: 786 cm³/rev
• Displacement: 48.0 in³/rev
• Maximum Speed: 143 rpm
• Maximum Continuous Flow: 76 L/min / 20 gpm
• Maximum Intermittent Flow: 114 L/min / 30 gpm
• Maximum Continuous Differential Pressure: 103 bar / 1,500 psi
• Maximum Intermittent Differential Pressure: 138 bar / 2,000 psi
• Maximum Supply Pressure: 300 bar / 4,350 psi
• Maximum Continuous Torque: 1,044 Nm
• Maximum Intermittent Torque: 1,428 Nm
• Maximum Continuous Output: 17 kW
• Maximum Intermittent Output: 23 kW
• Minimum Starting Torque: 991 Nm continuous / 1,341 Nm intermittent
• Shaft Code: 44
• Shaft: 14-tooth spline, 12/24 pitch, 12 mm tapped
• Configuration: Historical/custom EW combination; verify exact mounting/port details from the original Parker configuration drawing or nameplate
• Options: AAAB, No Paint

Parker’s official ordering information defines shaft code 44 as a 14-tooth spline, 12/24 pitch with a 12 mm tapped shaft. The official TG0785 performance data specifies 786 cm³/rev, 143 rpm and 103/138 bar continuous/intermittent differential pressure.

TG0335MS050

The supplied reference omits the final option suffix. Parker’s official stocking document identifies the complete TG0335MS050AAAB configuration.

• Brand: Parker Hannifin
• Series: TG
• Product Type: LSHT Orbital / Gerotor Hydraulic Motor
• Motor Size: TG0335
• Geometric Displacement: 337 cm³/rev
• Displacement: 20.6 in³/rev
• Mounting: Magneto
• Porting: 7/8-14 SAE
• Shaft: 1-1/4″ 14-tooth spline
• Options on documented AAAB configuration: No Paint
• 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 / 3,000 psi
• Maximum Intermittent Differential Pressure: 276 bar / 4,000 psi
• Maximum Supply Pressure: 300 bar / 4,350 psi
• Maximum Continuous Torque: 964 Nm
• Maximum Intermittent Torque: 1,297 Nm
• Maximum Continuous Output: 30 kW
• Maximum Intermittent Output: 41 kW
• Minimum Starting Torque: 843 Nm continuous / 1,117 Nm intermittent

TG0530MS050

The supplied reference omits the final option suffix. Parker’s official stocking document identifies the complete TG0530MS050AAAB configuration.

• Brand: Parker Hannifin
• Series: TG
• Product Type: LSHT Orbital / Gerotor Hydraulic Motor
• Motor Size: TG0530
• Geometric Displacement: 528 cm³/rev
• Displacement: 32.3 in³/rev
• Mounting: Magneto
• Porting: 7/8-14 SAE
• Shaft: 1-1/4″ 14-tooth spline
• Options on documented AAAB configuration: No Paint
• Maximum Speed: 213 rpm
• Maximum Continuous Flow: 76 L/min / 20 gpm
• Maximum Intermittent Flow: 114 L/min / 30 gpm
• Maximum Continuous Differential Pressure: 121 bar / 1,750 psi
• Maximum Intermittent Differential Pressure: 155 bar / 2,250 psi
• Maximum Supply Pressure: 300 bar / 4,350 psi
• Maximum Continuous Torque: 983 Nm
• Maximum Intermittent Torque: 1,253 Nm
• Maximum Continuous Output: 23 kW
• Maximum Intermittent Output: 31 kW
• Minimum Starting Torque: 874 Nm continuous / 1,091 Nm intermittent

The lower pressure rating is displacement-specific and must not be replaced with the 207/276-bar rating applicable to smaller TG sizes.

TG0625MS050

The supplied reference omits the final option suffix. Parker’s official stocking documentation identifies the complete TG0625MS050AAAB configuration.

• Brand: Parker Hannifin
• Series: TG
• Product Type: LSHT Orbital / Gerotor Hydraulic Motor
• Motor Size: TG0625
• Geometric Displacement: 623 cm³/rev
• Displacement: 38.0 in³/rev
• Mounting: Magneto
• Porting: 7/8-14 SAE
• Shaft: 1-1/4″ 14-tooth spline
• Shaft Code: 05
• Rotation: Standard on the documented AAAB configuration
• Options: No Paint
• 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 / 1,750 psi
• Maximum Intermittent Differential Pressure: 155 bar / 2,250 psi
• Maximum Supply Pressure: 300 bar / 4,350 psi
• Maximum Continuous Torque: 986 Nm
• Maximum Intermittent Torque: 1,291 Nm
• Maximum Continuous Output: 20 kW
• Maximum Intermittent Output: 27 kW
• Minimum Starting Torque: 895 Nm continuous / 1,165 Nm intermittent

Control Method

The TG Series is based on a fixed-displacement LSHT orbital motor architecture.

The fundamental relationships are:

Hydraulic Flow → Motor Speed

Differential Pressure × Displacement → Available Output Torque

Therefore:

• Displacement: Fixed
• Speed Control: Hydraulic flow
• Torque Generation: Differential pressure and displacement
• Rotation Direction: Hydraulic flow direction
• Variable Displacement Control: Not integrated into the standard TG architecture

Parker defines multiple mounting/port, shaft, rotation and option fields within the TG ordering system.

Key Technical Advantages

1. 60:40 Spline Geometry

Parker specifies a unique 60:40 spline geometry within the TG drive-link architecture. The heavy-duty powertrain is designed for high torque transmission and durability.

2. Roller Vanes and Sealed Commutator

Parker identifies roller vanes and a sealed commutator as key design elements supporting efficiency and smooth low-speed operation.

3. Continuous Powertrain Cooling

The TG powertrain is continuously flushed with cool, high-flow working fluid to help support service life.

4. High Starting Torque

Parker’s published minimum starting-torque values increase across these sizes:

• TG0335 → 843 Nm continuous
• TG0530 → 874 Nm continuous
• TG0625 → 895 Nm continuous
• TG0785 → 991 Nm continuous

5. High External Side-Load Capability

The TG Series documentation specifies up to 16,000 N / 3,597 lb maximum side load at the key under the stated catalog conditions.

6. Multiple Shaft and Mounting Configurations

The TG ordering system supports keyed, splined and tapered shafts along with multiple mounting and port configurations.

Application Areas

TG0335MS050

Typical applications include:

• Agricultural machinery
• Conveyor drives
• Forestry equipment
• Material handling
• Mobile hydraulic equipment
• Rotary attachments
• Industrial drives

TG0530MS050

Typical applications include:

• Heavy agricultural machinery
• Conveyor systems
• Forestry equipment
• Material handling
• Wheel and traction drives
• Mobile hydraulic equipment

TG0625MS050

Typical applications include:

• Heavy conveyor drives
• Agricultural processing machinery
• Forestry equipment
• Material handling systems
• Mobile machinery
• Industrial rotary drives

TG0785EW440AAAB

Typical applications include:

• Heavy-duty conveyors
• Agricultural machinery
• Forestry machinery
• Material handling systems
• Sprocket drives
• Low-speed rotary machinery
• Heavy mobile equipment

The Parker TG0785 performance envelope is 786 cm³/rev, 143 rpm maximum speed and 1,044 Nm continuous maximum torque.

Expert Maintenance Tips

1. Complete the MS050 Part Number Before Ordering

Use the supplied references for search indexing, but confirm the complete suffix before purchase:

TG0335MS050AAAB

TG0530MS050AAAB

TG0625MS050AAAB

2. Use 786 cm³/rev for TG0785

The Parker catalog value is:

TG0785 = 786 cm³/rev / 48.0 in³/rev

Third-party pages showing 386 cm³/rev should not be used for engineering specifications.

3. Respect the Lower Pressure Ratings of TG0530 and TG0625

• TG0530: 121/155 bar continuous/intermittent
• TG0625: 121/155 bar continuous/intermittent

4. Inspect 14-Tooth Spline Engagement

The TG ordering system distinguishes:

• Code 03 → 1-1/4″ keyed
• Code 05 → 1-1/4″ 14-tooth spline
• Code 44 → 14-tooth spline, 12/24 pitch, 12 mm tapped

5. Calculate External Radial Loads

For wheel, sprocket, gear and chain applications, evaluate:

Radial Load + Axial Load + Load Distance + Shaft Speed + Bearing Life

rather than torque alone.

6. Control Oil Temperature and Return Pressure

Parker’s TG performance data is based on:

• 10W40 hydraulic oil
• 200 SUS
• 54°C / 130°F

Parker notes that the values are typical and actual production-motor results may vary slightly.

7. Respect Intermittent-Duty Definitions

Parker specifies that intermittent operation ratings apply to 10% of every minute.

8. Perform 100% Simulated Operating-Condition Testing

For replacement TG motors, recommended factory QA should include:

• Displacement verification
• Pressure testing
• Flow testing
• Speed verification
• Starting-torque testing
• Continuous-torque testing
• Internal-leakage testing
• Rotation-direction testing
• Shaft runout inspection
• Spline inspection
• Pilot inspection
• Bearing/load verification
• Return-pressure testing
• Temperature-rise testing
• Noise and vibration testing
• Complete configuration verification

Recommended motor-size baselines are:

TG0335 → 337 cm³/rev / 277 rpm / 207–276 bar / 964–1,297 Nm

TG0530 → 528 cm³/rev / 213 rpm / 121–155 bar / 983–1,253 Nm

TG0625 → 623 cm³/rev / 182 rpm / 121–155 bar / 986–1,291 Nm

TG0785 → 786 cm³/rev / 143 rpm / 103–138 bar / 1,044–1,428 Nm