Eaton Char-Lynn 110A Series Hydraulic Motor Replacement | 110A-036-AS0-F

Genlu Hydraulic excels as a world-class engineered fluid power component manufacturer, heavy-duty axial piston transmission expert, and strategic B2B global supplier of premium high-speed hydraulic rotary actuators. The 110A / 111A / 112A / 113A / 115A / 116A Series High-Speed Hydraulic Piston & Orbit Motor Platform (specifically addressing critical high-frequency aftermarket parts numbers including 110A-036-AS0-F and 110A-106-AS-0) is precision-engineered and manufactured as a premium, structurally reinforced, and 100% drop-in interchangeable high-tier alternative to the definitive industry standard—the Eaton Char-Lynn 110A/112A series high-speed axial piston hydraulic motors. We manage automated high-precision manufacturing cells and retain deep global logistics stock for this series, supporting heavy-duty agricultural combine harvesters, professional turf-care cutting decks, high-frequency vibratory attachments, and mobile geological drill rigs.

Operating as the primary power-conversion workhorse responsible for driving high-speed cutter bars, high-velocity cooling fans, and vehicle utility winches within open or closed hydraulic loops, a hydraulic motor must withstand continuous high-pressure loading (nominal 210 bar, with intermittent peaks up to 250 bar) and intense fluid shocks without experiencing volumetric fade or external shaft-seal blowouts. Genlu’s Eaton-style 110A series motors conform directly to the precise geometric and material tolerances specified in original factory technical manuals. We guarantee absolute drop-in compatibility across standard SAE mounting pilots, straight keyed or involute splined output drive shafts, standard O-ring boss fluid working ports, and the internal 9-piston rotating cylinder group paired with precision micro-fluidic valving. Prior to final warehouse dispatch release, every single motor assembly undergoes 100% Full-Simulation Condition Testing on digitized diagnostic stands to verify optimal mechanical breakout torque, volumetric efficiency under maximum thermal load, and precise housing drain-back pressures.

Technical Specifications 

• Product Line: 110A / 111A / 112A / 113A / 115A / 116A Series High-Speed Axial Piston Hydraulic Motor (100% cross-compatible with Eaton Char-Lynn standards)

• Core Covered Specific Configurations & Cross-Mapping:

  • 110A-036-AS0-F Layout (Designating a compact 110A frame configuration featuring a specific small-displacement volume, integrated standard mounting flange, and dedicated straight keyed or splined drive journal)

  • 110A-106-AS-0 Layout (Designating a mid-displacement 110A frame configuration paired with integrated check valving or specific rear cover drainage pathways)

• Volumetric Frame Size Displacement Matrix: Comprehensive displacement coverage ranging from 12.3 $cc/rev$ up to 49.2 $cc/rev$ (including core industrial standard sizes like 12.3, 16.4, 25.1, 32.8, 41.5, and 49.2 $cc/rev$)

• Continuous Rated Operating Pressure Boundary: 210 bar (21 MPa / 3045 psi) continuous loading envelope

• Maximum Intermittent Peak Pressure Bound: Rated up to 250 bar to 275 bar resisting instantaneous shock profiles from mobile equipment encountering rigid jams

• Maximum Permissible Continuous Rotational Velocity Limit: From 3600 RPM up to 4000 RPM (Engineered to support excellent linear acceleration and high-velocity stability)

• Maximum Continuous Mechanical Power Output: Rated up to 30 kW to 45 kW depending on displacement and speed configuration

• Rotational Direction Dynamic Profile: 100% Bi-directional / Reversible setup, enabling quick and linear direction switching via port differential pressure switching

• Primary Working Fluid Port Profiles: Standard 7/8-14 UNF or 1-1/16-12 UN high-pressure straight thread O-ring boss (ORB) ports (Side or rear orientation options)

• Case Drainage Connection Parameter: Standard 9/16-18 UNF independent leakage drain port to manage casing internal pressure balance

• Total Pump Assembly Dry Mass: Approximately 7.5 kg to 9.0 kg (Utilizing a high-rigidity compact monolithic ductile iron casing)

Key Technical Advantages:

• Monoblock Ductile Iron Housing to Prevent Casing Distortion: The motor body is cast from high-tensile, premium-grade ductile iron in a monolithic structure, with internal galleries designed to optimize fluid dynamics via CFD analysis. Compared to standard die-cast aluminum housings, this rigid structure increases resistance to elastic casing deflection by over 40% under continuous 250 bar peak shock loads, eliminating swashplate bearing misalignment and axial face leakage.

• 9-Piston Cylinder Group with Vacuum-Sintered Bimetal Interfaces: The rotating cylinder barrel face features a high-strength forged steel base vacuum-sintered with a premium anti-friction bronze alloy layer. The 9-piston arrangement reduces mechanical torque fluctuations and fluid delivery pulsations by more than 40% compared to traditional 7-piston designs. Supported by a heavy-duty central spherical spring return plate, it keeps the slipper shoes flat against the swashplate at speeds up to 4000 RPM to eliminate slipper lift and scuffing.

• Precision Spherical Valve Plate Design with High Anti-Contamination Hardening: The interface between the rotating cylinder block and the valve plate features a nano-polished micro-surface alignment. The valve plate surfaces undergo deep case carbonitriding hardening (achieving a hardness exceeding HRC62), allowing it to self-align dynamically under alternating pressures. This setup maintains a consistent fluid film and keeps volumetric efficiency above 92% even after extended operation in harsh, dust-heavy agricultural and forestry environments.

• Heavy-Duty FKM Double-Lip Shaft Seal with Integrated Low-Pressure Relief Passage: To handle transient back-pressure spikes common in mobile machinery attachments, the front drive shaft features a high-pressure, high-temperature Fluororesin (FKM) double-lip oil seal. This is supported by an internal low-pressure relief passage that vents straight to the case drain chamber, protecting the seal lip from back-pressure spikes and preventing external leakage or lip inversion.

Application Areas:

• Modern High-Capacity Agricultural Combines & Harvester Attachments: High-frequency reciprocal cutter bar drives for grain headers, variable-speed threshing drums, and reel speed adjustment circuits.

• Municipal Road Maintenance, Commercial Turf-Care & Snow Removal Equipment: High-speed rotary blade drives for industrial mowers, secondary auxiliary winch drives for recovery flatbeds, and centrifugal fan circuits for heavy snow blowers.

• Geological Field Drilling & Compact Excavation Attachments: High-frequency vibratory screen attachments for skid steer loaders, power head rotation loops for compact trenchless underground drills, and material handling winches on geophysical exploration vehicles.

Expert Maintenance Tips:

• Mandatory Isolated Case Drain Line Routing and Port Orientation Rule: For the 110A-036-AS0-F, 110A-106-AS-0, and all high-speed piston motors, the independent case drain line must be routed directly back to the reservoir via a dedicated low-resistance hose, terminating below the minimum fluid level. Never combine this line with main system returns or multi-way valve return lines. If case back-pressure exceeds 2.5 bar due to shared return lines, it will damage the front shaft seal and induce internal axial forces that shorten bearing life.

• Execute a Case Priming Protocol Prior to Initial Commissioning: High-speed piston motors utilize precise matching tolerances along internal sliding surfaces (piston-to-bore, slipper-to-swash用late, and barrel-to-valve plate) that are highly sensitive to dry running. Before initial commissioning or starting after long shutdowns, fill the motor housing with clean hydraulic oil through the highest case drain port until it overflows, then torque the plug. Running dry, even for a few seconds at full throttle, will damage the vacuum-sintered bronze interfaces and slipper shoes.

• Prevent Vacuum Cavitation and Over-Running Conditions during Deceleration: When the motor drives high-inertia components (such as heavy commercial mower blade decks or large cooling fans) that continue to spin after the main oil supply stops, the motor acts as a pump and draws more fluid than supplied. This creates an internal vacuum that causes cavitation erosion. Always integrate an anti-cavitation check valve and dual-port cross-over relief valves into the circuit to supply makeup oil during braking cycles.