Product Overview

The 103-1012-012 represents the mid-to-large displacement tier of Eaton's S Series orbital motor range, built on the Geroler® platform that replaces the traditional sliding-contact gerotor with a rolling-element orbit set. At 10.1 CID (165 cc/rev), it bridges the gap between compact H Series motors and the high-torque T Series workhorses — delivering 301 N·m continuous torque at 1,900 PSI with a 343 RPM top speed at 15 GPM rated flow. The constant-clearance Geroler design maintains tight internal sealing across the full pressure range, yielding higher volumetric efficiency and lower internal leakage than conventional gerotor equivalents. A journal-bearing front support and three-zone pressure architecture — inlet, return, and case cavities hydraulically isolated — ensure shaft seal longevity even under continuous-duty and elevated case-pressure conditions. Standard 4-bolt SAE mounting, 1.25-inch keyed shaft, and threaded side ports make it a direct bolt-in solution for OEM equipment across agriculture, construction, forestry, municipal, and material handling sectors, particularly where a self-contained hydraulic rotary drive simplifies machine layout by eliminating gearboxes, chains, and belt reducers.

Key Features

✅ Dual-brand interchangeabilityDirectly replaces original Eaton Char-Lynn 103-1012-012 and Danfoss MS0101 series motors, lower inventory SKUs and stocking expenditure.

✅ Plug-and-play installationMounting holes, shaft and oil ports fully match OEM dimensions, no drilling or pipeline modification needed to greatly shorten maintenance time.

✅ Precision gerotor assemblyCNC machined stator and rotor maintain minimal internal leakage, stable torque and rotational speed under fluctuating inlet hydraulic pressure.

✅ Heavy-duty cast iron housingHigh-strength cast iron shell with anti-corrosion coating resists impact, dust and moisture for outdoor farm and construction usage scenarios.

✅ Reliable sealing systemHeat and oil resistant nitrile rubber seals reduce external oil seepage and routine seal maintenance frequency.

✅ Low speed high torque outputDelivers powerful torque at low rotational speed, ideal for winches, conveyors, wheel drives and other hydraulic drive applications.

✅ Optimized internal flow pathReduces hydraulic power loss and heat buildup to cut energy consumption of the whole hydraulic system.

✅ Standard factory performance testingEach unit passes pressure fatigue, continuous rotation and leakage tests before delivery to guarantee stable export-grade quality.

✅ Broad application rangeCompatible with agricultural machinery, light construction equipment, sanitation vehicles, industrial conveyors and other hydraulic machinery.

✅ Flexible procurement optionsOffer sample trial purchase and full container bulk supply for repair workshops, OEM manufacturers and overseas hydraulic part distributors.

Applications

• Construction Machinery：Excavators, skid steer loaders, backhoe loaders, road rollers, and compact construction equipment.

• Agricultural Equipment：Tractors, harvesters, sprayers, hay balers, agricultural winches, and general farm machinery.

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

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

• Mobile Equipment：Refuse trucks, snow plows, utility vehicles, and marine hydraulic systems.

Other model specifications

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