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. Power take off (PTOs) are mechanical gearboxes that attach to apertures provided on truck transmissions and are used to transfer the power of the vehicle engine to auxiliary components, most commonly a hydraulic pump. The power take-off may be engaged by means of a cable, air pressure or hydraulic pressure.
PTOs come in many different variations. Their features include different sizes, speeds, mounting styles and strengths. With so many options, how will you decide what you need? First, you have to decide what you plan to do with it. Would you use a water pump on a fire truck? Will you operate a winch on a trailer or a compactor on a garbage truck? Or would you spend hours in the field on a tractor pulling a lawnmower behind you to cut the grass? Determining what you plan to use your PTO for will guide you every step of the way.
To determine PTO power either power equation using torque can be used. Power (kW) = To × N 9549 where kW = kilowatts; To = torque (Nm); N = speed (rpm). Drawbar power (Dbhp) is power measured at the point implements are attached to the tractor, drawbar or 3 point hitch.
There are three common power take-off methods in the mobile machine market; tractor style, truck transmission style and engine crankshaft-driven.
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.
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.
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.
Front-end implements work off the midpoint PTO and hydraulic lines shunted to the front. In Deere’s compact utility tractors, a selector lever on the operating platform lets an operator switch on either the midpoint PTO or rear PTO, or both. Extending the midpoint PTO shaft forward powers front-end attachments.
engine front-end PTO, engine rear-end PTO, clamp-type PTO, transmission upper cover PTO, transmission side cover PTO, transmission rear end cover PTO, transfer case PTO drive shaft power take off
If you’re here, it’s likely you don’t just have a passing interest in industrial power take off. You’ve either used a PTO before or are planning to use one soon, we offer top quality PTO replacement parts. And if you’re using PTOs, you know that there is a wide range of types and brands that can be installed and utilized for various powerful machines. Contact us today to find out how we can help you!