Power take-offs or PTOs are a piece of equipment that is connected to a vehicle that supply power to different attachments. These attachments are known as auxiliary components and can range from hydraulic pumps to wood chippers.
The PTO comes in two main types of split shaft and sandwich split shaft. Although different types, they still function the same by converting the rotational power generated by the engine and turning it into hydraulic power. A crankshaft will pass through the driveline and connect to an accessory.
Two Main Types of Power Take Offs
Split Shaft
Inside of Split Shaft PTOs, there is an extra gear box that can typically only be used when the vehicle is stationairy. This is because it disconnects the driveshaft from the engine to recieve the power necessary to run.
While this is a considerable drawback, the split shaft type pulls power from the drivetrain and is used for applications that may not need continual use. Applications for this PTO would be wood chippers, cement mixers or air compressors.
Sandwich Split Shaft
The Sandwich Split Shaft gets it's name from being sandwiched in-between the vehicles engine and transmission. This allows for the PTO to draw on the engine power and generate more power going out to the auxiliary components.
Because of the higher power output, Sandwich Split Shaft PTOs are commonly seen on larger vehicles. Examples being fire engines, garbage trucks and water trucks.
What To Know Before Getting A PTO
There are a few variables when it comes to installing a PTO on any piece of equipment. Here are a few things to look for before making the big purchase:
What connection type will I need to best operate my accesory?
What is the gear ratio requirement of the accessory that I want to run?
Some gear ratios will generate more power or turning while others will generate more torque.
How many teeth or splines does my PTO output shaft need to mate with the equipment?
Will the PTO connect properly with my truck's transmission?
Is there enough room on my vehicle for the installation of a PTO?
While there are plenty of things to consider, this short list will help you start narrowing down what kind of power take off to look for. For more information on what PTO your truck might need, reach out to one of our representatives today!
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