104-3497-006 Char-Lynn 2000 Series LSHT Hydraulic Motor 195cc

Product Overview

The 104-3497-006 is an Eaton Char-Lynn (now Danfoss) 2000 Series standard mount low-speed, high-torque (LSHT) orbital hydraulic motor with a displacement of 194.8 cm³/rev (11.89 in³/rev). As the eighth displacement size in the 2000 Series lineup — Char-Lynn’s most widely applied medium-duty gerotor motor platform — this motor features the proven Geroler® disc valve system, delivering reliable low-speed high-torque output for demanding agricultural, construction, and industrial material handling applications.

This configuration corresponds to complete model code M02119AC15AA0100010AD0000AAAAF, featuring an SAE A standard 2-bolt flange mount (82.6 mm pilot diameter), a 25.40 mm straight shaft with Woodruff key, 0.875-14 UNF-2B SAE O-ring staggered ports, and a 0.4375-20 UNF-2B SAE O-ring case drain port. The motor is fully interchangeable with Eaton Char-Lynn original 2000 Series motors of the same specification, requiring no modification to mounting brackets or hydraulic plumbing.

The motor features a cast iron housing, heavy-duty tapered roller bearings, and a premium NBR sealing system. Every unit undergoes rigorous pressure, flow, and leak testing before shipment.

Technical Specifications 

• Model Number: 104-3497-006

• Complete Model Code: M02119AC15AA0100010AD0000AAAAF

• Brand / Series: Eaton Char-Lynn / Danfoss 2000 Series

• Motor Type: Standard Mount Low-Speed High-Torque (LSHT) Geroler Disc Valve Motor

• Geometric Displacement: 194.8 cm³/rev (11.89 in³/rev)

• Working Pressure: 205 bar

• Maximum Flow: 75 L/min

• Mounting Flange: SAE A Standard 2-Bolt Flange, 82.6 mm Pilot Diameter

• Output Shaft: 25.40 mm straight shaft with 6.35 mm Woodruff key, 0.250-20 UNC-2B threaded end

• Port Size: 0.875-14 UNF-2B SAE O-Ring Staggered Ports

• Drain Port: 0.4375-20 UNF-2B SAE O-Ring Port

• Integral Valve: None

• Sensor: M12 threaded connector, digital speed pickup (30 pulses)

• Seal Type: NBR (standard)

• Bearing Type: Heavy-Duty Tapered Roller Bearings

• Housing Material: Cast Iron

• Finish: Unpainted

• Weight: Approx. 11.3 kg

Key Technical Advantages

1. Geroler® Disc Valve System — High Volumetric Efficiency and Smooth Low-Speed Operation

The 104-3497-006 employs Eaton Char-Lynn’s patented Geroler® rotor-stator set combined with a precision-machined disc valve. The Geroler profile optimizes the tooth engagement geometry, reducing contact stress and improving oil film formation conditions. The disc valve maintains precise commutation timing across the full speed range, effectively suppressing pressure pulsation and noise caused by trapped oil while maintaining high volumetric efficiency. Empirical testing confirms volumetric efficiency exceeding 90% under rated conditions, with stick-slip behavior effectively suppressed during low-speed operation.

2. Heavy-Duty Tapered Roller Bearings — High Side-Load Capacity and Extended Life

The 2000 Series features front and rear tapered roller bearings supporting the output shaft. Compared to ball bearings, tapered roller bearings present a larger contact area and higher impact resistance. They can simultaneously accommodate radial and axial combined loads, offering significant advantages in chain-driven and gear-driven applications with sustained side loading. The heavy-duty bearing configuration enables the motor to maintain stable output performance under the vibration and shock loads typical of agricultural machinery such as tractors and harvesters.

3. Cast Iron Housing and Premium Sealing System — Reliability Under Harsh Conditions

The motor housing is cast from high-strength iron, providing excellent rigidity and vibration resistance. The sealing system uses premium NBR material, maintaining reliable sealing performance under high-temperature and high-pressure conditions, effectively preventing oil leakage and external contaminant ingress. The staggered port layout optimizes plumbing connection space and reduces installation interference risk.

4. True Drop-In Interchangeability — Direct Replacement Without Modification

The 104-3497-006 is manufactured to exact Eaton Char-Lynn original dimensional specifications, achieving complete interchangeability across mounting flange dimensions, shaft configuration, port positions, and rotation direction. During equipment repair or refurbishment, it can directly replace the original motor of the same specification without any modification to hydraulic plumbing or mounting brackets, effectively reducing downtime and maintenance costs.

Application Areas

• Agricultural Machinery: Harvesters, balers, feed mixers, tractors, sprayers, agricultural winches

• Construction Equipment: Excavators, skid steer loaders, backhoe loaders, road rollers, concrete mixers

• Material Handling: Forklifts, belt conveyors, lift tables, sweepers, aerial work platforms

• Industrial Machinery: Hydraulic winches, drilling rigs, hydraulic power units, industrial automation systems

• Specialty Vehicles: Refuse trucks, snow plows, utility vehicles, marine hydraulic systems

Expert Maintenance Tips

Installation: Before mounting, verify that the SAE A 2-bolt flange pilot diameter (82.6 mm) and mounting face tolerance conform to Eaton specifications. The pilot should enter the mating bore without force — do not drive it in with a mallet. Shaft-to-coupling alignment must be held within 0.05 mm radial deviation. For 0.875-14 UNF-2B ports, use SAE O-ring seals and tighten to specified torque values, avoiding over-tightening that could deform the O-ring.

Break-In Procedure: After initial installation, operate the motor at no load and 50% rated pressure for 15–20 minutes to allow the running surfaces to seat properly. Monitor return oil temperature during break-in; a rise exceeding 30°C above ambient indicates a potential issue. After break-in, drain the reservoir and replace the filter element.

Routine Maintenance: Inspect shaft seal and port connections regularly for signs of weeping or leakage. Maintain hydraulic fluid cleanliness at NAS Class 8 or ISO 18/15 or better. Maximum operating temperature should not exceed 82°C (180°F). A preventive inspection is recommended every 2,000 operating hours or 12 months, focusing on tapered roller bearing axial clearance, commutator plate flatness, and seal aging.