Small engine and power train products from Tecumseh Power International

Tecumseh Power International Ltd., 152 / 154 Commercial Road, Staines, Middlesex. TW18 2QP
t// +44 (0)1784-460684
f// +44 (0)1784-453563

Light Duty Hydrostatic Transmissions

The Eaton Light Duty Hydrostatic Transmission consists of a variable displacement radial ball piston hydraulic pump, a fixed displacement radial ball piston hydraulic motor and a system of valves, all contained in one housing. It can be used in many different types of applications where variable output speed is a requirement. It has many advantages over other variable speed drives (electric and mechanical) and gear type transmissions.

Response - These transmissions respond faster than any other type of power-transmitting system.
Precise speed - Has the capability of maintaining precise speed under varying load conditions.
Ease of operation - One lever controls direction and speed smoothly without gear change.
Low maintenance - Simple design keeps maintenance to a minimum.
Increased Productivity and Versatility - It allows complete matching of power to load.
Self contained - There are no external high pressure lines, separate drive components, etc.
Simplified final product design - It reduces the number of mechanical drive components.
Positive Braking Action - The lever that controls speed also provides braking. The output shaft speed decreases as lever is moved toward neutral. With lever in neutral, output stops.


Model 11 Pump	Model 11	Model 7

Light Duty Hydrostatic Transaxles

Eaton Models 751, 771, 781, and 851 - use the time proven ball piston design for both pumps and motors. The Models 751 and 851 use one ball piston pump and two ball piston motors to provide the speed and torque required to propel vehicles of many different sizes.

Transaxles for the ZTR (Zero Turn Radius) type vehicles - The 771 is an assembly with one pump and one motor. Two assemblies, a right and left, are required on each vehicle. The 781 consists of two units similar to the 771 joined together to make one assembly.

Eaton Ball Piston Design - The simple ball piston design provides high efficiency, and long life. It is environment and temperature tolerant. This means the transaxle is resistant to damage.

Eaton Transaxles - Eaton hydrostatic transaxles have integral pump(s), motor(s) and axle housing with planetary gears using state-of-the-art materials, to provide a strong, long lasting, compact drive package.

Models 751, 851, 771, 781

These Transaxles Provide:
Smooth Performance Infinitely - Adjustable control, delivering smooth operation in both forward and reverse.
Easy Operation - One control provides both forward and reverse, plus speed. No clutch, no synchronizer, no shifting.
Hydrostatic Dynamic Braking - In all kinds of weather all kinds of terrain, Eaton hydros provide dynamic braking in either forward or reverse.
Quiet Operation - Equipped with special pistons to reduce noise and vibration no matter how tough the job.
Trouble Free Performance - A proven, tested design ensures years of reliable operation with little or no maintenance.

Transaxles Also Feature:
Environmentally protected wet type parking / emergency brake(s), which can be used for full emergency stops in addition to the dynamic braking capability of the hydrostatic transmission.
Vertical input shaft which allows use with today's popular vertical shaft engine (a horizontal input option is available).
One pump two motor parallel circuit provides a hydraulic differential system with even power distribution through both wheels.
1 inch diameter axle shaft supported with ball bearings provides high axle loading capability.
The Model 851 has a charge pump with a spin-on oil filter. Port connections provide for a customer supplied oil reservoir. Auxiliary function ports are available.
Installation mounting points for axle, torsional load, and linkage.