Product Description
Eaton Char-Lynn 4000 Series (4 Series) Heavy-Duty Disc Valve Orbit Motors
Product Overview: The Eaton Char-Lynn 4000 Series (commonly known as the 4 Series) is the industry benchmark for high-performance medium-to-heavy duty hydraulic driving. This category focuses on the cornerstone models: 129-0348-002, 129-0150-002, and 129-0022-002. Utilizing precision Disc Valve technology, the 4000 Series is engineered to maintain exceptional volumetric efficiency under high-pressure conditions. Featuring patented Geroler® roller sets, internal mechanical friction is significantly reduced, ensuring smooth power delivery in Low Speed High Torque (LSHT) applications. It is the premier power source for combine harvester drives, large sprayer propel systems, forestry equipment, industrial conveyor drives, and heavy sweepers.
Key Technical Advantages:
Disc Valve Precision: The independent valve plate automatically compensates for wear-induced clearances under pressure, ensuring the motor maintains peak efficiency throughout its service life.
Elite Load Resilience: Equipped with oversized tapered roller bearings, the housing handles massive radial and axial loads directly—ideal for direct-drive wheel setups.
Geroler® Roller Geometry: Minimizes internal friction and enhances startup efficiency, ensuring powerful, pulse-free operation even at minimal speeds.
High-Pressure Shaft Seals: Features premium high-pressure seals capable of handling significant return line back-pressure with zero leakage risk.
Detailed Specifications & Parameters:
Core Series: Eaton Char-Lynn 4000 Series (4 Series).
Featured Model Matrix: 129-0348-002, 129-0150-002, 129-0022-002.
Core Performance Specs:
Displacement Range: 160 cc/rev to 800 cc/rev (9.8 – 48.9 cu in/rev).
Rated Pressure: Continuous up to 200-210 Bar (2900-3000 PSI); Intermittent peaks up to 310 Bar.
Torque Capability: Continuous torque ranging from 450 Nm to 1100 Nm, with peaks exceeding 1400 Nm.
Mounting Standards: Standard 4-Bolt Square or 2-Bolt SAE B/C flanges with Keyed, Splined, or 1:8 Tapered shaft options.

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