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PTO Shaft

Why Choose Us?

 

 

Quality Guaranteed
A modern enterprise specialized in development, design, manufacture, sale and service for agricultural machinery transmission systems, including agricultural pto shaft (driveline), gearbox, and other accessories in complete series.

 

Rich Experience
Over decades' development and great efforts, Changheng has become one of the biggest manufacturers in the field of Agricultural PTO shaft.

 

Advanced Equipmen
We've developed our own line of forging, machining, assembly, plastic injection, etc. And we have our own CE testing facilities like Torque, Frozen and UV tester. We also designed our own Square testbay with monitered gearboxes and PTO shafts running over 1000 hours.

 

Definition of PTO Shaft

 

 

A PTO shaft is a device (a mechanism) usually seated on the flywheel housing, which transfers power from the driveline (engine) to a secondary application. In most cases, this power transfer applies to a secondary shaft that drives a hydraulic pump, generator, air compressor, pneumatic blower, or vacuum pump.

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Benefits of PTO Shaft
 

Improved power transmission efficiency

A PTO shaft tillercan lead to power loss and reduced efficiency. Replacing it with a new one ensures optimal torque transfer, improving overall power transmission and performance.

Enhanced vehicle handling and stability

A PTO shaft can cause vibrations and instability, resulting in compromised vehicle handling. Replacing it helps restore balance and smooth operation, enhancing driving experience, and ensuring safety.

Prevention of costly damages to other drivetrain components

A faulty drive shaft can exert excessive stress on other drivetrain components, such as the transmission or differential. Timely replacement prevents further damage, potentially saving significant repair costs.

How Does the Agricultural PTO Shaft Work?

 

The agricultural power take-off (PTO) shaft is a mechanical device used to transmit power from a tractor or other power source to agricultural implements or machinery. It is a critical component in connecting the tractor's power to various equipment such as mowers, balers, tillers, and more. Here's how it works:

 

• Power Source: The PTO shaft is typically connected to the rear of a tractor or other power source equipped with a PTO. The PTO is a rotating driveshaft that extends from the rear of the tractor's engine.

 

• PTO Shaft: The PTO shaft is a telescopic, splined shaft that connects to the PTO output on the power source. It consists of two or more sections that can slide in and out to adjust the length. The shaft is usually made of steel and has a specific number of splines that match those on the PTO output.

 

• Implement Connection: The other end of the PTO shaft is connected to the input of the agricultural implement. The implement typically has a PTO input shaft that matches the splines on the PTO shaft.

 

• Splined Coupling: To connect the PTO shaft to the implement, a splined coupling mechanism is used. It consists of two halves with matching splines. One half is attached to the PTO shaft, and the other half is attached to the implement's input shaft. When the two halves are aligned, they are engaged by sliding them together, creating a solid connection.

 

• Power Transmission: Once the PTO shaft is connected, power is transmitted from the power source to the implement through the rotating PTO shaft. As the power source rotates the PTO shaft, the implement's input shaft also rotates, driving the machinery or implements attached to it. The PTO shaft transfers the rotational energy, enabling the implement to perform its intended function, such as cutting grass, tilling soil, or harvesting crops.

农用动力输出传动轴

What Are Some Common Applications of PTO Shaft?

Automotive: Four-wheel drive vehicles and rear-wheel drive vehicles mostly use drive shafts. They transmit power from the engine to the differential, turning the vehicle's rear wheels.

 

Aerospace: Helicopters and aircraft use drive shafts, especially in transmission systems. They transfer power from the engine to the rotors or propellers.

 

Marine: Ships and boats also use drive shafts to deliver power from the engine to the propeller. They allow the propeller to turn, which propels the vessel through the water.

Industrial machinery

Different industrial machinery, such as agricultural machinery, conveyors, and manufacturing equipment, utilise drive shafts. They transmit power from the engine or motor to the working parts of the machinery.

Motorcycles and bicycles

Few bicycles and motorcycles use drive shafts as an alternative to belt or chain drives. They transmit power from the engine or motor to the rear wheel, which allows the bicycle or motorcycle to move forward.

Construction machinery

Different construction machinery utilises driveshafts, including cranes, loaders, and excavators. They transmit power from the engine or motor to the machinery's working parts, allowing these heavy-duty machines to move and operate.

Power generation

Power plants use drive shafts to connect generators and turbines. They transmit power from the generators to the turbines, generating electricity.

 

PTO Shaft - Safety Practices

 

 

Though not always convenient or easy, there are several ways to reduce the risk of PTO injury incidents. These safety practices offer protection from the most common types of PTO entanglements.
• Keep all components of PTO systems shielded and guarded.
• Regularly test driveline guards by spinning or rotating them to ensure that they have not become stuck to the shaft.
• Disengage the PTO and shut off the tractor before dismounting to clean, repair, service, or adjust machinery.
• Always walk around tractors and machinery instead of stepping over a rotating shaft.
• Always use the driveline recommended for your machine. Never switch drivelines among different machines.
• Position the tractor's drawbar properly for each machine used to help prevent driveline stress and separation on uneven terrain and during tight turns.
• Reduce PTO shaft abuse by observing the following: avoid tight turns that pinch rotating shafts between the tractor and machine; keep excessive telescoping to a minimum; engage power to the shaft gradually; and avoid over tightening of slip clutches on PTO-driven machines.
• Be sure PTO driveline is securely locked onto the tractor PTO stub shaft.
• Keep universal joints in phase.

Materials Used in PTO Shaft Construction

 

 

Steel

Steel drive shafts are known for their durability and strength. They can handle high torque loads and are often used in heavy-duty applications or performance-oriented vehicles. Steel provides excellent reliability and robustness.

 

Aluminium

Aluminium drive shafts are favoured for their lightweight nature. They offer weight savings compared to steel, which can contribute to improved fuel efficiency and reduced overall vehicle weight. Aluminium drive shafts are commonly found in a variety of vehicles, including sports cars and some trucks.

 

Carbon Fibre

Carbon fibre drive shafts represent the pinnacle of lightweight construction. They offer exceptional strength-to-weight ratio and contribute to improved vehicle performance. Carbon fibre drive shafts are often seen in high-performance and luxury vehicles, where weight reduction is a priority.

 

 

 

How Do I Know if My PTO Shaft Is Too Long?

Read the manual that is supplied with your PTO before operating the machinery. Failure to follow all safety procedures in the manufactures literature could lead to equipment damage, personal injury or death.

PTO shafts are supplied long because the length of the draw arms on tractors vary. It is typical to have to remove excess length from the PTO before using the implement with your tractor. If you have more than one tractor, it is important to cut the shaft for the tractor you will be using the implement with. Mark the PTO with permanent marker as to which tractor it is to be used with to avoid confusion that could lead to damage. Using a PTO shaft that is too short can cause the PTO to separate during use that could lead to damage, injury or worse.

The PTO shaft must never completely collapse in use, because to do so would put the weight of the implement attached to the tractor pushing against the PTO's of the tractor and implement. The output bearings are not designed for thrust forces pushing the PTO forward into the gearbox, and could cause severe damage. This could be an expensive repair on the tractor if the PTO bearings or gearing were damaged due to an improperly fitted PTO shaft. If you have to lift the implement to attach the PTO, then the PTO shaft is too long and must be cut.

The PTO shaft going to the tractor should have about 1 ½ inches of space to retract when the distance between the splines on the tractor and implement are at minimum. If this is not the case, the PTO must be cut to avoid damaging the tractor or the PTO shaft. If you need to cut the PTO shaft, see the instructions that came with the shaft.

PTO Drive Shaft for Rotary Cutter

 

PTO Shaft: Common Causes of Failure

Understanding the causes of PTO shaft failure is essential for prevention. Here are common factors that can lead to a PTO shaft break

Overloading

Applying more power than your PTO shaft can handle is a frequent cause of failure. Always match your shaft's specifications to your equipment's power requirements.

01

Misalignment

Incorrect alignment between the tractor and implement can lead to excessive stress on the PTO shaft. Proper alignment is key.

02

Inadequate Lubrication

Failing to lubricate your PTO shaft properly leads to increased friction, heat, and wear, weakening the shaft.

03

Impact and Over-Torquing

Sudden impacts and over-torquing the shaft can result in structural damage.

04

Neglected Maintenance

Irregular maintenance practices, such as neglecting regular inspections and servicing, can lead to issues and potential failure.

05

 

What You Should Know When Use PTO Shaft?

 

 

1. When you finish your task, turn off the PTO before getting off the tractor. Stop the tractor and take the key.
2. Don't go near the PTO driveline until all parts have stopped rotating.
3. Don't check, adjust, unplug or grease any PTOpowered equipment while the PTO shaft is rotating.
4. Check the manufacturer's instructions on how to hook up an implement to the PTO. Make sure no one is on the tractor or near the equipment while you are hooking it up.
5. If a PTO is operating while the tractor is stationary, be sure the tractor is in neutral or park and the parking brake is on.
6. Don't wear loose clothing around a PTO. If you have long hair, put it up or tuck it under a hat before operating the machinery.
7. Every time you hook up an implement to your tractor's PTO, check to make sure the shields are in place and are properly functioning.
8. If someone is working alone with PTO-powered machinery, check on the person from time to time.

 

How Do You Lubricate a PTO Shaft?

Perform a Regular Visual Inspection

Many vehicle owners fail to do the simplest form of maintenance: a simple visual inspection of your PTO shaft can tell you if problems are around the corner. If one part becomes damaged or worn it can create problems for other parts. Check whether everything moves smoothly and if there are any signs of metal wear, which should be quite obvious.

Clean and Lubricate It

Always keep your PTO shaft free of dirt and grime and ensure it is well-lubricated. As with all moving parts, this will extend its life. This should be done as frequently as you change the oil in your vehicle – and make sure you use the recommended high temperature grease on all the critical parts. Avoid use of high-pressure cleaners as this can force dirt into sealed parts.

Use a Specialised Service Centre for Re-Balancing

A PTO shaft that is not balanced properly will cause growing problems. When you inspect your vehicle, if you notice a gouge, dent, or hole in the round tube part it is a problem; likewise if you feel a vibration when you drive your vehicle it is a sign of imbalance. This will need to be corrected professionally at a reputable and specialised PTO shaft balancing service centre, before it creates any bigger problems for your axle or transmission system.

 

Our Factory

 

 

Founded in 1995, Zhejiang Changheng Machinery Group Co., Ltd is now a modern enterprise specialized in development, design, manufacture, sale and service for agricultural machinery transmission systems, including agricultural pto shaft (driveline), gearbox, and other accessories in complete series.
● We've developed our own line of forging, machining, assembly, plastic injection, etc.
● We have our own CE testing facilities like Torque, Frozen and UV tester.
● We also designed our own Square testbay with monitered gearboxes and PTO shafts running over 1000 hours.

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Our Certificate
 

 

productcate-535-389
productcate-535-389

 

 
Ultimate FAQ Guide to PTO Shaft
 

Q: What is PTO shaft in trucks?

A: In trucks, PTOs are found in mechanical gearboxes. These gearboxes are attached to apertures provided on truck transmissions and used to transfer the power of the truck's engine to auxiliary components like a hydraulic pump.

Q: What is a PTO shaft on a tractor?

A: The pPTO shaft on a tractor transmits power from the tractor's engine to PTO-driven machines or implements. The machine's drive shaft is connected to the tractor's PTO stub shaft and transfers energy from the tractor to the machinery.

Q: What is a PTO shaft kit?

A: A PTO kit is a device that transfers a vehicle engine's mechanical power to another apparatus that does not have its own engine. A PTO allows the hosting energy source to transmit the engine's power to additional equipment seamlessly.

Q: What is PTO shaft in a vacuum cleaner?

A: PTO in vacuum cleaners is usually found on the top or front of wet and dry vacuum cleaners. Generally taking the form of a plug socket, PTO synchronizes vacuum cleaner operations with a power tool. So, the vacuum automatically switches on whenever a power tool is turned on.

Q: What is live PTO shaft?

A: A live PTO operates through a two-stage clutch system. To engage the PTO, the clutch needs to be pressed halfway; to disengage the PTO, the clutch needs to be pressed fully. This allows the operator the ability to slow down or shift gears while the PTO remains engaged.

Q: How do you maintain a PTO shaft?

A: Keep It Clean: Regularly clean your PTO shaft to prevent contamination, rust, and corrosion. A clean shaft is a safe and efficient one.
• Lubrication is Essential: Proper lubrication reduces friction, heat, and wear.

Q: How do I know if my PTO shaft is too long?

A: If you have to lift the implement to attach the PTO, then the PTO shaft is too long and must be cut. The PTO shaft going to the tractor should have about 1 ½ inches of space to retract when the distance between the splines on the tractor and implement are at minimum. If this is not the case, the PTO must be cut to avoid damaging the tractor or the PTO shaft. If you need to cut the PTO shaft, see the instructions that came with the shaft.

Q: How often should you grease a PTO shaft?

A: Of grease (one shot from a grease gun) before start-up and then every 8-10 hours of operation after that. Apply grease through the fitting on the bearing carrier or sheave housing.

Q: What is normal PTO shaft speed?

A: Power transfer is accomplished by connecting a drive shaft from the machinery to the tractor's PTO stub shaft. The PTO and drive shaft rotate at 540 rpm (9 times/second) or 1,000 rpm (16.6 times/second) when operating at full recommended speed. At all speeds, they rotate in proportion to the speed of the tractor engine. Note: 1000 rpm speed PTO shafts have more splines on the shaft.

Q: How often does a typical PTO shaft rotate?

A: PTO shafts rotate at a very high speed. They make 540 or 1,000 revolutions per minute when they are at normal operating speed. Most PTO accidents happen when people get too close to the rotating shaft, especially if guarding has been removed or is damaged.

Q: How do you lubricate a PTO shaft?

A: Apply grease via the grease fitting until grease begins to come out of the welch plug vent hole. After grease appears in the vent hole, cover it and continue to grease until it begins to show grease in the seal. During re-lubrication it may not be possible to fully collapse the PTO shaft.

Q: How often do you lubricate a PTO shaft?

A: The recommended lubrication interval for PTO shaft's used in Industrial plants in normal operating conditions is approximately every 500 hours. Unfavorable effects like temperature, dirt and water may necessitate shorter lubricating intervals.

Q: What are the applications of PTO shaft?

A: Examples of applications where PTO is used:
Wood chippers.
Hay balers.
Harvesters.
Mechanical arms.
Water pumps.

Q: What is the function of the PTO shaft on a tractor?

A: The tractor's stub shaft, often called the PTO, transfers power from the tractor to the PTO-driven machine or implement. Power transfer is accomplished by connecting a drive shaft from the machinery to the tractor's PTO stub shaft. The PTO and drive shaft rotate at 540 rpm (9 times/second) or 1,000 rpm (16.6 times/second) when operating at full recommended speed.

Q: What is shaft in agriculture?

A: Power take-off (PTO) drive shafts are removable components for transmitting power between a tractor and another machine. The drive shaft itself is very durable. However, its protective shrouding (guard) can wear out if the device is not used properly. If this guard is not replaced, accidents may occur which may even be fatal. A KAN expert report provides information on the scope for improvements to the standards governing PTO drive shafts.

Q: What is the principle of PTO?

A: Power take-off (PTO) is a device that transfers an engine's mechanical power to another piece of equipment. A PTO allows the hosting energy source to transmit power to additional equipment that does not have its own engine or motor. For example, a PTO can help run a jackhammer using a tractor's engine.

Q: Where does the PTO shaft get drive from?

A: This unit gets the drive directly from the engine shaft and can be capable of delivering up to the complete engine power to the PTO. Usually these units come with their own lubricating system. Due to the sandwich mounting style, the gearbox will be moved away from the engine, requiring the driveline to accommodate the installation.

Q: What is the function of the PTO shaft?

A: The Power Take-Off (PTO) shaft is an efficient means of transferring mechanical power between farm tractors and implements. This power transfer system helped to revolutionize North American agriculture during the 1930's. It is also one of the oldest and most persistent hazards associated with farm machinery.

Q: Do PTO shafts have to be guarded?

A: All PTO shafts need to be properly guarded. Guards need to be kept in good condition and used properly - it could save your life. Broken, damaged or badly fitting PTO guards are as dangerous as an unguarded PTO shaft and can easily give a false sense of security and so increase the danger.

Q: How to maintain a PTO shaft?

A: Keep It Clean: Regularly clean your PTO shaft to prevent contamination, rust, and corrosion. A clean shaft is a safe and efficient one. As we say, "Keep your PTO shaft clean." Lubrication is Essential: Proper lubrication reduces friction, heat, and wear.

We're well-known as one of the leading pto shaft manufacturers and suppliers in China. If you're going to wholesale customized pto shaft with competitive price, welcome to get quotation from our factory.

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