Before we can begin on the importance of a power take off (PTO), you should first understand what it actually is. This is a piece of equipment that transfers the mechanical power of the engine over to another part of the equipment. Trucks have many different parts in them, and some of the things found in a truck aren’t found in a car. One of the things that a car doesn’t have is known as the PTO.
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What is a power take off? Power take-off (PTO) transfers the mechanical power of the engine over to another piece of the equipment. This allows for the power to move throughout the equipment to transmit energy even if it doesn’t have a motor or engine itself.
How the PTO Works
The rotating power from turning gets turned into what is known as hydraulic power. This has also become known as fluid power, and it gets controlled through a pressurized system. The rotating motion will cause a buildup of pressure in the crankshaft, and the power can be used for a variety of different purposes as it builds up.
Some of the uses that you might turn it to include:
- Greater engine efficiency
- Controls the hydraulics for raising or lowering dump truck bed
- Used for towing vehicles
- Runs the water pump to spray through the hose
You will see that PTO has been used for a variety of different applications like harvesters, wood chippers, hay balers, water pumps and carpet cleaners.
The Types of PTO’s
In years past, we saw Power Take-Offs operate from a belt drive, pneumatics like bleed air and drive shaft attachments. In most circumstances today, how PTO works is with a geared transmission. However, you still have three common PTO methods available on the mobile machine market:
- Engine crankshaft-driven style
- Tractor style
- Truck transmission style
The crankshaft-driven method usually gets used for hydraulic pumps mounted to the front of your truck. For example, you might use it for a cement mixer. The small shaft will have a U-jointed design and attach to the yoke coupler for turning the pump. Normally, you don’t hear this configuration referred to as a PTO, but it still technically classifies as one.
How does a PTO work? You can trace the tractor PTO back almost as far as tractors themselves from when most of the PTOs drove with a transmission, located near the back part of the tractor. This form of PTO will only engage when you power up the transmission clutch. In fact, the mechanism couples with the transmission so that when you depress the clutch, the PTO doesn’t run.
Truck PTO Transmission Style
Smaller trucks use the PTO to drive the hydraulic pump for a hoist or winch. Meanwhile, large trucks might employ a PTO for a variety of purposes, but hydraulic pumps are the most common, and they get used to load and unload the different types of cargo. For a larger transmission, you might have two to three of these to help with the provision of every transmission. Let the normal clutch out to get the output shaft to spin.
Applications of the PTO
Whenever the equipment doesn’t have its own engine, you will see this used. For example, you will often see PTOs used in commercial vehicles and farming equipment. In fact, the innovation of the PTO came mostly from the ingenuity of farmers. A tractor engine serves as the PTO to operate a jackhammer or other equipment.
Some of the other applications where you see a PTO includes:
- Wood chippers
- Hay balers
- Mechanical arms
- Water pumps
What Does a PTO Do?
When you ask, “What does a PTO do?” you can sum up the action where it converts rotary power over into hydraulic power. Once converted into hydraulic power, it runs the hydraulic hookups like oscillating power mowers, cotton pickers, backhoes, fire engine pumps and dump trucks. The access happens most often through a mechanical, electrical or hydraulic pump, and the motor converts the force back into a mechanical force or a rotary force, depending on the need.
What is a power take off? The internal mechanisms of the system use the engine to power up separate parts of the machine. This makes for better convenience, more efficiency and a cheaper option than installing another motor. Anyone who uses industrial equipment every day will understand the value of this technology, even when they can’t answer the question of, “how does a PTO work?” If you’re looking for a power take off, we offer top quality PTO replacement parts. Contact us today to find out how we can help you!
Why Are Power Take Offs (PTO) Important?
The PTO takes energy that would’ve been wasted otherwise and transfers it over to another source. This is what helps it to perform a variety of functions that are entirely necessary. For example, towing wouldn’t be possible at the weight amount that it is without having power take off. That’s why having this installed in your machinery matters because of how much it can help you with different applications.
A hydraulic pump uses hydraulic power pump drives (PPDs) engineered for agricultural markets, as well as construction, forestry, petroleum, and marine industries. The hydraulic pump is a mechanical device that produces hydraulic energy from mechanical power. It generates flow with sufficient power, which will allow it to overcome pressure from the load.
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Type 1 Mechanical
Tested and ready for delivery!
- High-quality spherical roller bearings allow for maximum capacity and life
- Drop in replacement for Twin Disc or Rockford
- Straddle bearing housing holds up to 17” (430mm) diameter sheave
- Bearing housing remains on shaft during belt change to eliminate bearing contamination
- Bellhousing designed to accept mechanical, pneumatic or hydraulic actuated clutch
- Male and female pilot diameters, simplify sheave housing mounting
- Lubrication passages are a fundamental part of the design, eliminating hoses
Please contact K & L Clutch & Transmission for all of your WPT Power equipment and product needs.
Featured Product for June 2014
The TC 113 is a relatively new product line for Twin Disc. TC113 is an automotive style spring loaded Twin Disc power take-off. It is 13” and fits a SAE #3 housing. Some of the important features are:
Quality is Standard
• External adjustment of lever engagement travel
• Spring loaded clutch
• Sealed for life pilot bearing
• Ease of adjusting lever travel
• Adjustment not required
• Less Maintenance
Please contact K & L Clutch & Transmission for all of your Twin Disc equipment and product needs.
As we well know, as operators and distributors of these hard-working parts, power take offs serve quite a few uses! They began around World War I as additions to tractors and have since been adapted to fit many different purposes. Dump trucks use them to lift their dump boxes and release their loads. Fire trucks use them to pump water through their hoses. They can even be installed on trucks to operate wenches and small cranes. These add-ons provide more than just extra machinery, they provide the user with a tool that can take care of almost anything they need.
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To complement our WPT Mechanical line of power products, K & L Clutch is pleased to announce their appointment as the “Full Line Distributor” in North Texas for WPT Power Products. Effective 2/1/13 we will handle the complete line of outstanding products that WPT offers. This includes Type 1 and Type 2 Pneumatic and Hydraulic PTOs, Power Grip and PO Clutches, Water Cooled Brakes, Low Inertia Clutches and Brakes, Pump drives, and Caliper Brakes. With this appointment, K & L Clutch becomes the only certified service center for WPT Power Products in the North Central Texas area. If your unit is in need of repair, we can do it.
We are ready to service you now. Please call any of our experienced sales associates and ask more about the “Full Line” of WPT products we can serve you with.
Contact us for more information. We’ll get your project back up and running in no time.