Parker TG & TE Series Orbital Motor | TG0335 TG0475 TE0230 Hydraulic Motor

The TG and TE Series low-speed high-torque (LSHT) orbital hydraulic motors manufactured by Chengyuan Hydraulic are rugged, highly efficient rotary drive components engineered to be fully compatible with Parker (Torqlink) industrial standards. Utilizing the advanced Geroler roller-vane geometry, these motors deliver excellent mechanical efficiency and high starting torque across their full displacement matrix. For sophisticated technical configurations including TG0335HW440BBCG (heavy-duty wheel mount integration), TG0475MW440AAAB, and the compact TE0230FS100AAXB, we have heavily reinforced the internal valving timing and high-pressure shaft seal clusters. Every motor undergoes 100% simulated load testing under rated load before shipment to verify low-speed stability and torque output, delivering proven 100% original-place interchangeability.

Technical Specifications :

• Series Designation: Parker TE Series (Medium Duty) / TG Series (Heavy Duty) Orbital Motors

• Model Configurations Supported: TG0335HW440BBCG / TG0475MW440AAAB / TE0230FS100AAXB

• Nominal Displacement Grids:

  • TE0230 Frame: 230 $cm^3/rev$ (14.0 $in^3/rev$)

  • TG0335 Frame: 335 $cm^3/rev$ (20.5 $in^3/rev$)

  • TG0475 Frame: 475 $cm^3/rev$ (29.0 $in^3/rev$)

• Maximum Continuous Pressure: Up to 140 bar for TE series / Up to 200 bar (20 MPa / 3000 psi) for TG series

• Intermittent Peak Pressure Limit: Up to 280 bar (28 MPa / 4000 psi) for TG heavy-duty frame sizes

• Maximum Torque Capacities:

  • TE0230 Frame: ~530 N·m Continuous

  • TG0335 Frame: ~850 N·m Continuous

  • TG0475 Frame: ~1100 N·m Continuous / 1490 N·m Intermittent Peak

• Maximum Continuous Speed: 150 rpm to 400 rpm (dependent on flow rate and displacement)

• Mounting Flange Configurations: H-code (Heavy-Duty Wheel Mount Flange) / M or F-code (Standard SAE A 2-bolt or 4-bolt patterns)

• Shaft Output Variations: Code 440 represents 1-1/4″ Involute Spline or Straight Keyed Shaft / Code 100 represents 1″ Straight Keyed Shaft

• Maximum Allowed Case Pressure: Up to 150 bar with external drain line active / 20 bar continuous without external drain line

Key Technical Advantages:

• Heavy-Duty Geroler Roller-Vane Technology: Unlike standard Gerotor designs, the TG series incorporates precision-ground steel rollers within the cam ring profile. This structure converts sliding friction into rolling friction, minimizing startup resistance and enabling smooth, cog-free torque output even at ultra-low speeds ($< 10 \text{ rpm}$).

• Heavy-Duty Tapered Roller Bearings: The TG0335 wheel-drive motors house oversized tapered roller bearings. Combined with the H-type Wheel Mount configuration, the assembly directly handles massive radial loads up to 35,000 N, allowing heavy wheels or sprockets to be mounted directly to the output shaft without external bearing support blocks.

• Pressure-Balanced Commutation Valving: The internal flow distribution system employs a pressure-compensated plate design that micro-adjusts clearances relative to operating pressure. This effectively cuts internal bypass leakage between the high and low-pressure chambers, maintaining volumetric efficiency above 90% even under 280 bar intermittent peaks.

• Teflon-Reinforced High-Pressure Shaft Seals: For configurations matching severe vibration and bidirectional cycling, we integrate premium double-lip viton/teflon seals. The shaft end handles severe transient backpressure spikes without weeping, reducing seal-maintenance downtime.

Application Areas:

• Heavy Mobile Propelling Vehicles: Wheel drives for municipal street sweepers, primary traction propulsion for skid steer loaders, and track drive systems for mini-drilling rigs.

• Agricultural & Forestry Machinery: Reel drives for combine harvesters, logging processor heads, and heavy winch drives for tub grinders or silage mixers.

• Industrial Rotational Automation: Light-duty marine crane winches, heavy-duty cable spoolers, and processing agitator drive heads.

Expert Maintenance Tips:

• Mandatory External Case Drain Connection: When system backpressure at the return port (T-port) continuously exceeds 20 bar, the case drain port (the small threaded port at the rear) must be plumbed directly back to the tank. Plunging or plugging this port will cause internal pressure buildup that quickly ruptures the high-pressure shaft seal.

• Pre-Lubrication Priming Protocol: The internal clearances of orbital motors are tightly toleranced. Before initial operation, pre-fill the motor housing with at least 0.5 liters of clean hydraulic oil via the main inlet port and rotate the shaft manually. Running the motor dry during initial priming will score the Geroler element.

• Anti-Wear Fluid Viscosity Threshold: We recommend using high-grade 46# or 68# anti-wear hydraulic oil, keeping operating oil temperatures between $30^\circ C$ and $60^\circ C$. If oil temperature spikes and viscosity drops below $13 \text{ cSt}$, internal leakage will increase, resulting in low-speed cogging or power loss.