TGK0530 TGK0240 TGK0335 Parker Torqmotor Hydraulic Motor LSHT

Product Overview

The Parker TGK Series is a Torqmotor™ low-speed, high-torque (LSHT) heavy-duty orbital hydraulic motor featuring field-proven gerotor technology with an extra heavy drive train, delivering high starting torque, smooth operation, superior volumetric efficiency, and exceptional load capacity.

The TGK Series is Parker’s flagship heavy-duty hydraulic motor, integrating an extra heavy drive train within a standard-size motor housing to deliver up to 19,000 lb-in (2,147 Nm) of torque with intermittent pressure ratings up to 4,000 psi (276 bar). The series is available in 15 displacements from TGK0110 through TGK0530, ranging from 110 cm³/rev to 959 cm³/rev.

This page covers key models including TGK0530MS050AAAA, TGK0530MN1M0AAAB, as well as TGK0110, TGK0140, TGK0240, TGK0335, and TGK0475, widely used in heavy-duty applications such as vehicle propulsion, augers, chain drives, winches, and boom rotation.

As a premium aftermarket alternative to original Parker Torqmotor TGK 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 

TGK Series Common Core Parameters

• Product Series: Parker Torqmotor™ TGK Series Heavy-Duty Orbital Hydraulic Motor

• Displacement Range: 110 – 959 cm³/rev (6.9 – 58.5 in³/rev)

• Maximum Pressure Differential (Intermittent/Continuous): 159 – 276 bar / 124 – 241 bar (2,300 – 4,000 psi / 1,800 – 3,500 psi)

• Maximum Flow Rate (Intermittent/Continuous): 95 – 114 L/min / 76 L/min (25 – 30 GPM / 20 GPM)

• Maximum Output Torque (Intermittent/Continuous): 426 – 2,105 Nm / 373 – 1,647 Nm (3,767 – 18,630 lb-in / 3,299 – 14,580 lb-in)

• Maximum Dynamic Side Load at Key: 3,600 lb (16,013 N)

• Shaft Diameter: 1.25″ nominal (1.5″ optional)

• Design Type: Gerotor with extra heavy drive train

• Control Type: Bi-directional rotation, hydraulic control

• Country of Origin: Designed and manufactured in Greeneville, TN USA

• Weight Range: 13.8 – 33.5 kg (model dependent)

TGK0530MS050AAAA

• Geometric Displacement: Approx. 530 cm³/rev (TGK0530 Series)

• Design Type: Gerotor with extra heavy drive train

• Control Type: Bi-directional rotation, hydraulic control

• Mounting: Multiple flange configurations available

• Shaft Options: Multiple configurations available

• Maximum Dynamic Side Load at Key: 3,600 lb

• Typical Applications: Vehicle propulsion, augers, winches, boom rotation

TGK0530MN1M0AAAB

• Geometric Displacement: Approx. 530 cm³/rev

• Weight: 17.30 kg

• Design Type: Gerotor with extra heavy drive train

• Control Type: Bi-directional rotation, hydraulic control

• Mounting: Standard configuration

• Country of Origin: Made in Germany

• Brand: Denison Parker

TGK0110

• Geometric Displacement: 110 cm³/rev

• Maximum Torque (Intermittent/Continuous): 426 Nm / 373 Nm

• Typical Applications: Low-power heavy-duty drive applications

TGK0140

• Geometric Displacement: 141 cm³/rev (8.6 in³/rev)

• Continuous Torque: 390 Nm (3,455 lb-in)

• Intermittent Torque: 530 Nm (4,692 lb-in)

• Typical Applications: Low to medium-torque heavy-duty drive applications

TGK0240

• Geometric Displacement: Approx. 240 cm³/rev (14.5 in³/rev)

• Weight: Approx. 13.8 kg

• Typical Applications: Medium-torque heavy-duty drive applications

TGK0335

• Geometric Displacement: 337 cm³/rev (20.6 in³/rev)

• Maximum Side Load at Key: 16,000 N (3,597 lb)

• Typical Applications: Medium-high torque heavy-duty drive applications

TGK0475

• Geometric Displacement: Approx. 470 – 477 cm³/rev

• Maximum Output Power: 28 kW (38 HP)

• Typical Applications: High-torque heavy-duty drive applications

Key Technical Advantages

1. Extra Heavy Drive Train – Superior Torque Density
The TGK Series integrates an extra heavy drive train within a standard-size motor housing, delivering up to 66% greater torque capacity than comparable products. Achieving up to 45 HP in less than 6 inches of length, this exceptional power density enables OEMs to achieve higher HP applications in limited space.

2. Patented 60:40 Spline Geometry – High-Strength Powertrain
The TGK 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. Superior Side Load Capacity
The TGK Series carries up to 3,600 lb (16,013 N) dynamic side load at the key. This capability allows direct mounting to wheels, sprockets, or drive mechanisms without additional support bearings, significantly simplifying system architecture.

4. Patented High-Pressure Shaft Seal – No Case Drain Required
The TGK Series features a high-pressure shaft seal as standard, with an innovative design that eliminates the need for a case drain. This greatly simplifies hydraulic circuit layout, reduces installation complexity and potential leak points, and minimizes the impact of system back pressure on motor performance.

5. Smooth Extra-Low Speed Operation & Continuous Spline Lubrication
The TGK 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
TGK 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. Designed and manufactured in Greeneville, TN USA, with dependability based on high-quality design and manufacturing.

Application Areas

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

• Construction Equipment: Trenchers, tool carriers, pipe rotators

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

• Agricultural Machinery: Combine header drives, sprayers, specialty harvesters (potato, tomato, nuts, leafy vegetables, sugar, cotton, coffee, grapes)

• Material Handling: Conveyors, scissor lifts

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

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

• Oil & Gas: Oil and gas blender trucks

• Forestry & Mining: Forestry equipment, mining equipment

Expert Maintenance Tips

Installation Guidelines:

1. Model Verification: Before installation, verify the motor model and physical dimensions on the original equipment. The TGK Series includes multiple displacement models including TGK0110, TGK0140, TGK0240, TGK0335, TGK0475, and TGK0530—different models vary in displacement, torque output, and mounting interfaces. While TGK0530MS050AAAA and TGK0530MN1M0AAAB share the 0530 displacement, they may differ in shaft type and flange configuration—ensure correct model selection.

2. Fluid Cleanliness: Maintain system fluid cleanliness to ISO 4406 standards. 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 TGK Series features a no-case-drain design with patented high-pressure shaft seals, ensure case pressure does not exceed recommended limits. 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 TGK Series offers 3,600 lb 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 TGK Series offers intermittent pressure up to 4,000 psi (276 bar), but intermittent duty and peak duty are permitted for short durations only.

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