Product Overview
The TE0050CN411AAAB is a Parker Torqmotor™ TE Series medium-duty, low-speed high-torque (LSHT) orbital hydraulic motor with a geometric displacement of 49 cm³/rev (3.0 in³/rev). Built on an internal gear Gerotor principle, this motor converts hydraulic pressure into rotational mechanical energy through the volumetric variation between a fixed stator ring and a rotating internal gear set, making it ideal for industrial drive applications requiring high torque at low rotational speeds.
What sets the TE Series apart from competing products in its class is its exclusive use of roller bearings. The TE0050CN411AAAB can withstand dynamic side loads of up to 6650 N at the key, making it well-suited for chain and sprocket drive configurations where radial loading is significant. The motor incorporates two critical design features: a zero-leak commutation valve that maintains consistent volumetric efficiency across the operating range, and a patented high-pressure shaft seal system that eliminates the need for external check valves and additional plumbing.
This motor is engineered as a direct interchange unit for the original Parker TE0050 series, with mounting flange, shaft dimensions, and port locations fully compatible with Rexroth, Danfoss, and Eaton equivalent LSHT motor models. Every unit undergoes 100% simulated operating condition testing before shipment, verifying displacement accuracy, pressure integrity, and torque output consistency.
Technical Specifications
Model: TE0050CN411AAAB
Series: Parker Torqmotor™ TE Series (Medium Duty)
Displacement: 49 cm³/rev (3.0 in³/rev)
Continuous Pressure Rating: 140 bar (2030 PSI)
Intermittent Pressure Rating: 190 bar (2750 PSI)
Maximum Supply Pressure: 200 bar (2900 PSI)
Maximum Continuous Oil Flow: 34 L/min (9 GPM)
Maximum Operating Speed: 1020 rpm
Continuous Output Torque: 90 Nm (796 lb-in)
Intermittent Output Torque: 127 Nm (1120 lb-in)
Maximum Continuous Power: 12.8 kW (17.2 HP)
Control Type: Fixed displacement Gerotor
Mounting Flange: Standard SAE 2-bolt flange
Shaft Options: 25.4 mm (1″) keyed shaft or 6B spline
Port Type: G1/2 side ports
Rotation: Bi-directional
Weight: Approx. 5.9 kg
Maximum Dynamic Side Load: 6650 N (1500 lb at key)
Sources: Parker Official Catalog HY13-1590-005/US,EU.
Key Technical Advantages
1. Roller Vane Rotor Set — Reduced Friction, Extended Service Life
The TE Series employs a roller vane rotor design in which rolling contact replaces the sliding contact found in conventional Gerotor motors. This reduces frictional losses and internal leakage, allowing the motor to maintain stable volumetric efficiency throughout its operational life. While standard orbital motors typically experience a 5–8% volumetric efficiency decline after 2000 hours of operation due to wear, the TE Series’ roller-based design significantly mitigates this degradation, ensuring consistent torque delivery over extended service intervals.
2. Zero-Leak Commutation Valve — Consistent Volumetric Efficiency
The commutation valve is one of the most critical sealing components in an orbital motor, and its fit tolerance directly determines volumetric efficiency. The TE0050CN411AAAB features Parker’s patented zero-leak commutation valve, which maintains stable volumetric efficiency even at elevated rotational speeds through optimized port geometry and precision-machined sealing surfaces. Additionally, this design eliminates the need for external check valves in the hydraulic circuit, reducing plumbing complexity and potential leak points.
3. Roller Bearings and High-Pressure Shaft Seal — Reliability Under Heavy Loads
Unlike competing orbital motors in the same displacement class that typically use plain sleeve bearings, the TE Series is equipped with roller bearings rated for dynamic side loads up to 6650 N. This makes the motor particularly suitable for chain drive and gear drive applications where significant radial forces are present. The high-pressure shaft seal system, combined with a shaft seal cooling flow path, effectively manages temperature rise at the seal interface and prevents seal failure under high-pressure operating conditions.
4. Drop-In Interchangeability — Immediate Replacement Solution
The TE0050CN411AAAB adheres strictly to Parker TE Series dimensional standards for mounting flange, shaft extension, and port positions. It serves as a direct replacement for OEM Parker TE0050 motors and is cross-compatible with equivalent LSHT motor models from Rexroth, Danfoss, and Eaton. For equipment maintenance and retrofit projects, this translates to zero modification of mounting brackets, couplings, or hydraulic piping — dramatically reducing unplanned downtime.
Application Areas
Agricultural Machinery: Combine harvester reel drives, planter metering drives, irrigation hose reel drives
Construction Equipment: Mini excavator slew drives, skid steer attachment drives, road sweeper brush drives
Material Handling: Conveyor drives, winch and hoist drives, forklift attachment hydraulics
Municipal Equipment: Street sweeper brush motors, refuse compactor ram drives
Marine & Offshore: Deck machinery drives, winch motors, fishing equipment drives
Specialty Vehicles: Snow plow angle adjustment, salt spreader conveyor drives, aerial work platform wheel drives
Expert Maintenance Tips
Installation Guidelines:
Before installation, inspect the flange face and shaft extension for damage. Clean mating surfaces with a lint-free cloth.
Never install couplings by impact or hammering. Use a proper press tool and apply axial force evenly to avoid damaging the roller bearings.
Use G1/2 standard fittings for port connections. Tighten to Parker-specified torque values — over-torquing can crack the port housing.
System Commissioning:
Before first startup, ensure the hydraulic system is filled with clean oil and properly bled. Residual air inside the motor housing will cause low-speed creeping.
Install a case drain line (where applicable) to maintain housing pressure below 0.5 bar, extending shaft seal service life.
Maintain system filtration at 10 μm or better (NAS Class 9 maximum). Particulate contamination is the leading cause of premature orbital motor wear.
Maintenance Schedule:
Inspect case drain flow every 500 operating hours. Normal flow should be below 1.5 L/min. A significant increase indicates internal wear and warrants inspection.
Replace hydraulic fluid at intervals not exceeding 2000 operating hours or 12 months, whichever comes first. Use ISO VG 46 or VG 68 anti-wear hydraulic oil with a viscosity range of 20–300 cSt.
For storage exceeding 3 months, fill the motor with rust-preventive hydraulic oil and cap all ports to prevent internal corrosion.
