TK1000T5640AAAB Parker Torqmotor TK 1000cc Hydraulic Motor

Product Overview

The TK1000T5640AAAB is the largest displacement model in Parker‘s Torqmotor™ TK Series of heavy-duty, low-speed high-torque (LSHT) orbital hydraulic motors, with a geometric displacement of 1000 cm³/rev (61.0 in³/rev). The TK Series is the largest motor in the Torqmotor lineup, purpose-built for the most demanding heavy-duty applications, delivering up to 23,540 lb-in (approximately 2,660 Nm) of intermittent torque and 60 gpm (227 L/min) maximum flow.

The defining engineering characteristic of the TK Series is its exceptional side load capacity—6,000 lb dynamic side load at the key for flange mounts and 9,400 lb for wheel mounts. A high-pressure shaft seal is standard, and the innovative case-drain-free design eliminates an additional hydraulic connection and its associated leak potential, simplifying system layout. Continuous oil flow across the internal splines maintains stable operating temperatures within the powertrain under sustained high-load conditions.

The TK1000T5640AAAB features a flange mount configuration with a 1.5-inch nominal shaft. Each motor undergoes 100% simulated duty-cycle testing prior to shipment, validating volumetric efficiency, torque output, and low-speed stability under both dynamic instantaneous and static steady loads. Dimensional and functional interchangeability with the original Parker Torqmotor ensures true drop-in replacement—mounting flange, shaft configuration, and port geometry all match Parker OEM specifications. Designed and manufactured in Greeneville, TN USA.

Technical Specifications (Bulleted List)

• Model: TK1000T5640AAAB

• Series: Parker Torqmotor™ TK Series

• Motor Type: Heavy-Duty LSHT Orbital Motor

• Geometric Displacement: 1000 cm³/rev (61.0 in³/rev)

• Maximum Differential Pressure (Intermittent): 310 bar (4500 psi)

• Maximum Differential Pressure (Continuous): 241 bar (3500 psi)

• Maximum Torque (Intermittent): 2660 Nm (23,540 lb-in)

• Maximum Torque (Continuous): 2413 Nm (21,360 lb-in)

• Minimum Starting Torque (Intermittent): 2180 Nm (19,290 lb-in)

• Minimum Starting Torque (Continuous): 1981 Nm (17,535 lb-in)

• Maximum Oil Flow (Intermittent): 227 L/min (60 gpm)

• Maximum Oil Flow (Continuous): 151 L/min (40 gpm)

• Maximum Speed (Intermittent): 523 rpm

• Mounting: Flange Mount

• Shaft: 1.5-inch Nominal (1.75-inch available)

• Dynamic Side Load (Flange Mount): 6,000 lb

• Dynamic Side Load (Wheel Mount): 9,400 lb

• Shaft Seal: High-Pressure (Standard)

• Case Drain: Not Required

• Origin: Greeneville, TN USA

Key Technical Advantages

Exceptional side load capacity. The TK Series withstands up to 6,000 lb dynamic side load for flange mounts and 9,400 lb for wheel mounts. This specification leads the heavy-duty orbital motor class, far exceeding the limits of conventional bushing-type designs. Reinforced bearing support structures and an optimized shaft system design enable long service life under high side-load conditions such as chain drives, sprocket connections, and direct wheel hub drives.

High-pressure shaft seal with case-drain-free design. A high-pressure shaft seal is fitted as standard, and the innovative case-drain-free design eliminates an additional hydraulic connection and its associated leak potential. This design offers dual engineering value: it simplifies system layout, reducing installation complexity and maintenance costs, and reduces installation space requirements—particularly beneficial in space-constrained heavy-duty applications. Continuous oil flow passages across the internal splines control spline engagement surface temperatures, significantly extending spline and motor service life.

Superior low-speed stability. The TK Series utilizes a precision-machined orbital rotor set with high-pressure oil film sealing to maintain high volumetric efficiency across the full speed range. Even at extra-low speeds, the motor operates smoothly without stick-slip, eliminating the need for an auxiliary gearbox to drive heavy loads directly. This characteristic makes it particularly suited to travel drives and winch applications requiring precise speed control.

Six-times endurance life design. The TK Series is designed to deliver six times the endurance life of comparable products, directly translating to reduced OEM warranty expenditures and lower end-user field maintenance costs. The motor features a high-strength cast iron housing and premium bearings, with core components precision-machined and rigorously quality-controlled for long-term reliability under harsh operating conditions.

Application Areas

• Heavy-duty vehicle propulsion

• Large trenchers

• Chain drive systems

• Heavy-duty winches and hoists

• Boom rotate drives

• Spreaders and fertilizer equipment

• Skid steer attachments

• Conveyor drive systems

• Wood chippers

• Combine harvester drives

• Augers and post-hole diggers

• Snow removal equipment

• Portable irrigation systems

Expert Maintenance Tips

Verify model option code before installation. The TK1000T5640AAAB and TK1000K5640AAAA both share the TK1000 displacement, but differ in mounting configuration: T5640 corresponds to flange mount, K5640 to wheel mount. When replacing an original motor, confirm the complete model code on the nameplate, and verify mounting type, shaft specification, and port configuration. Refer to Parker‘s official product catalog option code chart for confirmation during selection.

Prime and bleed before first start. After initial installation or extended storage, air may be trapped within the motor casing. Fill the casing with clean hydraulic oil through the highest port before startup, then jog the motor at low pressure (≤30 bar) several times to purge residual air. Apply full working pressure only after the motor runs smoothly. Inadequate bleeding may cause low-speed stick-slip or abnormal noise.

Maintain oil cleanliness and viscosity. Premium quality anti-wear hydraulic oil is recommended at 70 SUS viscosity. System cleanliness should meet ISO 18/16/13 or better. The close clearances between the orbital rotor set and bearings are sensitive to particulate contamination; inadequate cleanliness accelerates wear, reduces volumetric efficiency, and increases internal leakage. Use return-line filtration rated at 10 μm or finer.

Inspect shaft seal and side load condition periodically. The TK Series features a standard high-pressure shaft seal. Inspect for weeping or dripping every 2,000 operating hours. Also inspect the output shaft and bearings for wear, particularly under high side-load operating conditions. If seal leakage or significantly increased bearing clearance is detected, replace the seal kit or bearings promptly to prevent fault escalation.