Hydrostatic Transmission Service, LLC has the ability to rebuild, test, adjust, and calibrate your hydrostatic drive, pump, or motor. When we rebuild your hydrostatic component, you can rest assured it’s done according to manufacturer specifications. Our hydrostatic. The hydrostatic transmission is a closed-loop circuit, where the fluid exiting from the drive motor outlet is returned to the hydrostatic pump without being sent to the tank. In this circuit, the input drive is the hydrostatic pump connected to the prime mover, and the output drive is the drive motor which is connected to the load. Hydrostatic Transmission Tractor. If your tractor will be primarily used for lawn and garden chores or with attachments that don’t require consistent speed, a hydrostatic transmission tractor may be the best choice and offers a variety of benefits.
Hydrostatic transmission is a category of engine mechanics, and basically describes a system in which power is generated and transmitted by pressurizing and releasing fluid through specialized pumps. It’s also sometimes called “continuously variable transmission,” and it works by converting energy harnessed from the movement fluid through hydraulic pumps to the drive train of a vehicle. This sort of transmission can technically be used to power almost any type of machine, though it’s most commonly seen in heavy-duty machinery like tractors and backhoes. The transmission has the ability to provide a lot of power very quickly, but it isn’t usually very efficient when it comes to acceleration and maintaining high speeds. As such, it isn’t usually a good choice for passenger cars or trucks that spend most of their time on the highways.
How it Works
Motor vehicle engines usually come in several different types, and in most cases they’re named based at least in part of how they work. Passenger cars, for instance, are typically marketed with either “automatic” or “standard” transmissions, and both are terms that describe how the technology works — which is to say, whether the engine gears will shift automatically in response to driver speed, or whether they require driver engagement. Describing an engine as having a hydrostatic transmission is usually a statement about how the engine actually operates internally. In these cases, fluid is transferred from a piston pump to the motor through a series of tubes, and the energy generated in the process is what actually powers the vehicle.
There are no provisions for a clutch or a need for changing gears with this kind of transmission. To change speeds the operator simply moves the speed selector in the direction that represents the desired reaction. Typically, the farther forward the speed selector is pushed, the faster forward the tractor or vehicle will go, while pulling the lever to the rear while in motion will allow the vehicle to slow down. From a stopped position, pulling the lever backward places the vehicle in reverse.
Most Common Applications
This sort of transmission works really well for machinery that needs to have a lot of power without a lot of movement. Most machines that use it also have big enough engine boxes to hold its typically large size; it’s common in land-moving equipment and industrial machinery, particularly tractors, excavators, and forklifts. Anything that needs a lot of power and energy in short bursts can usually benefit from this sort of energy arrangement, though it’s not usually a good choice for vehicles that need speed. This includes cars, trucks, and equipment that needs to move in traffic.
Why People Want It
Ease of operation is one of the biggest advantages to hydrostatic transmission. By eliminating the clutch pedal, the machine becomes much less complicated to operate. The vehicle's speed and power can be easily controlled with levers instead of a throttle, too, and the engine can also be used to control the descent down a hill or grade by using speed and direction rather than brakes.
This sort of transmission also makes certain jobs more efficient, and may allow the operator to get work done more comfortably than with the tiresome pushing of the clutch and the changing of gears. Once acclimated to the hydrostatic drive, most operators are able to manipulate the machinery with one hand without ever touching the throttle or the braking system until finished with the task.
Drawbacks and Disadvantages
Hydrostatic Transmission Lawn Mower
The hydrostatic transmission model isn’t without its faults, though. The mechanics involved in transferring power from the hydraulic shafts to the to gearbox increases the odds of something becoming stuck. The power application often directs far too much torque to the wheels in a soft terrain situation, making them prone to spinning; also, in most cases, the tire speed is not as effectively managed as by a throttle. This can create a control issue that typically results in the operator losing the fight between gravity and soft surfaces.
Expense might also be a factor. Hydraulically powered drive systems tend to be more costly than more typical clutch and gear models. The fluid alone is often pricey to buy, and maintenance and service tends to be a lot more expensive, too. For these reasons, some people choose traditional clutch transmission systems for their machinery, particularly if it’s something that’s only used sometimes or for limited projects.
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Our technicians, Parts & Sales Staff, and Office Managers have over 100 years of combined experience in the Hydraulic and Hydrostatic service industry. We feel fortunate to have such an experienced and highly skilled Team.
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We repair hydraulic drives, pumps, and motors and offer many other types of services. Click to see all our services.
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Welcome
We invite you to explore the site and learn about us and our distinctive products, services, initiatives, and our history of excellence. As one of the World’s premier providers of Hydrostatic rebuild and exchange services, we offer a full range of diagnostics, quality assurance, and buyer programs. At Hydrostatic Transmission Service, we constantly strive to anticipate and serve the needs of our customers. In response to that need, Hydrostatic Transmission Service offers a “Short-Time” exchange program and a guarantee on all rebuilt products and services. We understand that time is more valuable than money.
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Hydrostatic Transmission
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Hydrostatic Drive How It Works
Hydrostatic Transmission Service, LLC has the ability to rebuild, test, adjust, and calibrate your hydrostatic drive, pump, or motor. When we rebuild your hydrostatic component, you can rest assured it’s done according to manufacturer specifications. Our hydrostatic service process is very thorough and customer friendly. We want our customers to know our process!