Eaton H-070CD2XJ Hydraulic Motor

Eaton H-070CD2XJ Hydraulic Motor

Equipped with a precision-machined gerotor star set, the unit provides consistent volumetric efficiency under continuous system pressures up to 125 bar (1,800 PSI) and intermittent spikes to 165 bar (2,400 PSI). The three-zone internal pressure balance design controls case pressure, prevents internal seal extrusion, and preserves high starting mechanical efficiency.

Equipped with a precision-machined gerotor star set, the unit provides consistent volumetric efficiency under continuous system pressures up to 125 bar (1,800 PSI) and intermittent spikes to 165 bar (2,400 PSI). The three-zone internal pressure balance design controls case pressure, prevents internal seal extrusion, and preserves high starting mechanical efficiency.

Model Details:

• Manufacturer Part Number (MPN): H-070CD2XJ
• Series: Char-Lynn H-Series Spool Valve Gerotor Motor
• Displacement Class (070): ~74 cm³/rev [4.5 in³/rev] displacement element
• Mounting / Flange Style (C): 2-Bolt SAE A Standard Pilot Mounting Flange
• Shaft Configuration (D): 1-inch (25.4 mm) Straight Output Shaft with Woodruff / Parallel Drive Keyway
• Porting Configuration (2): 7/8-14 UNF-2B SAE O-Ring Boss (ORB) Main Work Ports (Staggered Side Porting)
• Design / Internal Option Code (XJ): Factory internal check valves, high-pressure shaft seal, standard rotation timing

Key Features

1. Hydrodynamic Journal Bearings & Integrated Spool Valve: Combines valving and high-load sleeve bearings onto the central shaft to handle balanced radial side loads without premature wear.
2. High Volumetric Efficiency Gerotor Element: Generates up to 118 Nm (1,044 lb-in) continuous torque and 157 Nm (1,390 lb-in) peak torque at rated differential pressures.
3. Bi-Directional Symmetrical Power Delivery: Dual-direction shaft rotation with matched performance characteristics and smooth torque delivery in both clockwise and counter-clockwise drive sequences.
4. Three-Zone Pressure Management: Internal check valves vent high pressure back to the low-pressure return side, preventing case over-pressurization during cyclic directional changes.
5. Severe-Duty Marine & Industrial Cast Enclosure: Heavy-duty cast iron body with corrosion-inhibiting external coating for direct exposure to maritime spray, chemical atmospheres, and heavy mobile vibrations.

Applications

• Vessel Deck Machinery: Capstans, mooring winches, net haulers, hose reels, and hatch-cover drive systems.
• Mobile Handling Equipment: Boom rotations, conveyor belt drives, palletizers, and sweepers.
• Industrial Manufacturing: Processing plant augers, feed rollers, slitter drives, and indexing turntables.
• Agricultural & Heavy Machinery: Combine header drives, salt/fertilizer spreaders, and utility augers.

Compatible Systems & Equipment

• Direct bolt-in fitment for systems specifying 2-bolt SAE-A mountings with 1″ keyed shafts.
• Fully compatible with standard open-loop and closed-loop hydraulic systems powered by Vickers, Rexroth, Parker, and Danfoss variable/fixed-displacement pumps.

Frequently Asked Questions

What is the displacement and torque rating of the Eaton H-070CD2XJ?

The Eaton H-070CD2XJ has a geometric displacement of 74 cm³/rev (4.5 in³/rev). It delivers up to 118 Nm (1,044 lb-in) of continuous operating torque and up to 157 Nm (1,390 lb-in) intermittent torque at rated differential pressures.

Can the Eaton H-070CD2XJ be used for bi-directional rotation?

Yes. The motor is bi-directional. Fluid entering Port A provides counter-clockwise shaft rotation (facing shaft end), while fluid entering Port B provides clockwise rotation. Volumetric efficiency and output torque ratings are equal in both directions.

What output shaft and mounting flange does this motor feature?

The H-070CD2XJ model configuration features an industry-standard 2-bolt SAE A pilot mounting flange (82.5 mm / 3.25″ pilot diameter) and a 1-inch (25.4 mm) straight cylindrical output shaft with a parallel/Woodruff drive key.

Is an external case drain line mandatory for this motor?

An external case drain is not strictly mandatory if continuous return line back-pressure remains below the shaft seal rating (under 70 bar / 1,000 PSI). However, in series installations, hydrostatic dynamic braking setups, or high cyclic reversal circuits, plumbing the case drain to the tank is recommended to preserve shaft seal longevity.

Can the Eaton H-070CD2XJ directly interchange with Danfoss or Parker motors?

Yes. The Eaton H-070CD2XJ matches standard dimensional footprints across SAE A 2-bolt mounts and 1-inch keyed drive shafts, making it a drop-in replacement for equivalent frame models such as the Danfoss DH/DS series or Parker Torqmotor TB/TE series. Ensure port thread sizes match your existing hose connections before installation.