77 Series PTO Shaft-Replacement of Weasler PTO Shaft

77 Series PTO Shaft-Replacement of Weasler PTO Shaft

The 77 series high-performance PTO drive shafts are the foremost drive shaft solution in the agriculture and lawn & turf industries. The PTO drive shafts are complete assemblies from the tractor to implement. They are designed for continuous heavy-duty use and meet the requirements of large farms and contractors. Tractor PTO shafts and CV wide-angle PTO drive shafts are interchangeable with standard PTO drive shafts available in the market.

▍Specifications of Weasler 77 Series PTO Shaft

▍Weasler 77 Series PTO Shaft Parts

▍Weasler 77 Series PTO Shaft Tractor Yoke

	Dim. “A” Bore	Dim. “B”
Auto-Lok	1 3/8” × 6 Spl.	7”
	1 3/4” × 20 Spl.	7”
	1 3/8” × 21 Spl.	7”
	1 3/4 x 6 Spl.	7”

▍Weasler 77 Series PTO Shaft Spline Shaft

	Dim. “A”	Length	Major Dim.
Spline Shaft	2” x 20 Spl.	3’	1.978/1.973

▍Weasler 77 Series PTO Shaft Cross and Bearing Kit

	Dim. “A”	Dim. “B”
	1 25/32”	4 31/32”

▍Weasler 77 Series PTO Shaft Slip Sleeve

	Length	Dim. “A” Bore	Fits Tube Size
With Grease Groove	5”	2” x 20 Spl.	3” (.188 wall)

▍Weasler 77 Series PTO Shaft Weld Yoke

	Dim. “A” Bore	Dim. “B” Bore
With Bearing Groove	2” x 20 Spl.	5 1/4”

▍Weasler 77 Series PTO Shaft Tube

	Length
3” (.188 Wall)	6’
	3’

▍Weasler 77 Series PTO Shaft Tube Weld Yoke

	Dim. “A”	Fits Tube Size
With Bearing Groove	5 3/4”	3” (.188 wall)

▍Weasler 77 Series PTO Shaft Implement Yoke

	Dim. “A” Bore	Dim. “B”	Standard Keyway
Round Bore With Keyway & Set Screw	1 3/4”	5 3/4”	3/8”
	2”	6 1/4”	1/2”

	Dim. “A” Bore	Dim. “B”
Clamp Yoke	1 3/4” x 20 Spl.	6 1/4”
	2” Rd.	6 1/4”

▍Weasler 77 Series PTO Shaft Yoke & Shaft Assembly

	Shaft Size	Dim. “A”
	2” x 20 Spl.	32.75”

▍Weasler 77 Series PTO Shaft Guard

Overall Driveline Length	Bearing Kit (2 per kit)
48”	961-4535
60”	961-4535
Easy Lock Replacement Kit
Guard Chain Kit

▍Weasler 77 Series PTO Shaft Benefits

(1) Sturdy and Durable: This PTO shaft is a well-forged series 77 driveline shaft with CE certification. It consists of a solid 20CrMnTi carburized steel universal joint and a Q345 steel tube inside the shield. The Weasler 77 series PTO shaft is durable and robust when working with various agricultural machinery.

(2) 6 Spline ＆ Round Ends: Constructed with a 6-spline tractor end and a round implement end, our Weasler 77 series PTO shaft has a standard size of 1-3/8 inches. It can match perfectly with the same size and type of implements and tractors, providing a magnificent driving force for your machinery. Your machinery will be running like never before.

(3) Adjustable Length: Compressed Length: 39" / 1000 mm; Extended Overall Length: 55" / 1400 mm. The tiller PTO shaft is designed with a telescoping steel tube, a universal joint, and yokes. It has 35 Hp, 26 Kw, and 460 Nm torque at 540 rpm, while at 1000 rpm features 53 Hp, 39 Kw, and 360 Nm torque. It allows two sides of the PTO drive shaft to spin at different speeds.

(4) Easy Assembly＆Safer Use: As a high-efficient power transmission tool, our Weasler 77 series PTO shaft can be easily assembled for effortless direct replacement. The security chain and sturdy shield eliminate potential dangers in the transmission process.

(5) Wide Application: The Weasler 77 series PTO shaft transfers the power from the tractor to the PTO-powered attachment. It is widely used on mowers, wood chippers, rotary tillers, rotary cutters, brush cutters, hush hugs, tractors, fertilizer spreaders, and more. Control the speed and power of your machine effectively. Powerful torque conversion and reliability will leave you wishing you got our PTO shaft sooner.

▍Weasler 77 Series PTO Shafts for Farm Equipment

The Weasler 77 series PTO shaft is widely used in farm equipment, as it is designed to withstand the demanding conditions of agricultural applications. Here are some of the ways that the Weasler 77 series PTO shaft is used in farm equipment:

(1) Tractors: The Weasler 77 series PTO shaft is commonly used in tractors to power a variety of implements, such as mowers, balers, and harvesters. It can handle the high torque requirements of these applications and is compatible with many different types of equipment.

(2) Harvesters: The Weasler 77 series PTO shaft is used in harvesters to power the various components of the machine, such as the header and the threshing mechanism. It is designed to handle the heavy loads and high speeds required for efficient harvesting.

(3) Tillage Equipment: The Weasler 77 series PTO shaft is used in tillage equipment such as plows, cultivators, and harrows. It can help to transfer power from the tractor to these implements, allowing farmers to prepare their fields for planting.

(4) Sprayers: The Weasler 77 series PTO shaft is used in sprayers to power the pump that distributes the chemicals or fertilizers onto the crops. It can handle the high pressure and flow rates required for efficient spraying.

(5) Livestock Equipment: The Weasler 77 series PTO shaft is also used in livestock equipment, such as feed mixers, manure spreaders, and barn cleaners. It can help to power these machines, which are essential for efficient livestock management.

Overall, the Weasler 77 series PTO shaft is a reliable and efficient way to transfer power from a tractor to a wide range of farm equipment, making it a popular choice for farmers and other agricultural professionals.

▍How Does Weasler 77 Series PTO Shaft Work?

The Weasler 77 series PTO shaft is a driveline component that transfers power from a tractor or other power source to an implement. It works by connecting the tractor's PTO (power take-off) output shaft to the input shaft of the implement. When the tractor's PTO is engaged, the shaft of the Weasler 77 series PTO shaft rotates, which in turn rotates the input shaft of the implement, transferring power to it.

The Weasler 77 series PTO shaft is designed to handle high torque loads and operate at a range of angles, which makes it ideal for use with a wide variety of farm equipment, including tractors, harvesters, hay tools, and livestock equipment. It features a tri-lobe design that reduces vibration and provides smooth operation, which can help extend the life of the driveline components. Additionally, the Weasler 77 series PTO shaft is made from high-quality materials that are designed to withstand the rigors of demanding farm applications and harsh environments.

In summary, the Weasler 77 series PTO shaft works by transferring power from a tractor's PTO output shaft to the input shaft of an implement, such as a mower or baler, allowing it to operate and perform its function.

▍How to Determine Tractor PTO Shaft Sizes?

A tractor PTO shaft on a tractor is used to pull power and torque from the operating machine's transmission. It is critical to choose the right PTO shaft for the specific equipment and tractor you are working on because the wrong one can cause damage to your tractor, implement, or even vehicle. To determine which PTO shaft is required for your tractor, measure the length of the tractor PTO shaft from yoke to yoke. There are a few ways to find the proper PTO shaft size for your tractor:

• A tractor PTO shaft allows you to operate equipment that requires a low rpm without excessive noise or vibration.
• They can be hydraulic or mechanical, and they come with a clutch.
• For tractor owners who do not need a high-quality transmission, economy tractor PTO shafts from HZPT are a perfect choice.
• Depending on your tractor's model, you can choose between hydraulic or mechanical models. Once you know what your transmission PTO shaft is capable of, it's easy to determine which type will fit your needs.

▍Agricultural PTO Shaft Length Limit

The PTO shaft is the system that powers your tools. Therefore, it is important to understand how it works to ensure user safety. Maintenance requirements must also be understood to prevent potential mechanical problems. PTO shafts have ratings and are not necessarily interchangeable between tractors or tools. Therefore, the correct shaft must be fitted to the tool according to the manufacturer's specifications, and its length must be correct.

Length: The length of the PTO shaft is determined when the tool is first installed on the tractor. If the PTO shaft needs to be shortened, the operator must cut the shaft to the correct length using the supplier's formula. This is usually done by taking measurements from the tractor output shaft and mounting the input shaft to the shortest position of the PTO shaft.
Too long: If your PTO shaft is too long (or if the telescopic tube gets stuck), there may be "end thrust," which can damage the tractor's internal PTO drive or implement the clutch and gearbox, potentially voiding your machine's warranty.
Too short: If the PTO shaft is too short, it may detach from the tool, causing major safety problems and possible damage.

▍How to Cutting PTO Shaft to Length?

If the PTO shaft is too long, it may jam when lifting the three-point hook. It may cause damage to the chipper bearings or tractor PTO shaft. If the PTO shaft is too long, it must be cut. An equal amount must be shortened in both halves of the PTO shaft.

1. Install the chipper on the three-point suspension device of the tractor.

2. Cut off the engine and remove the key. Place the chipper on a firm, level surface.

3. Lift the three-point suspension device so that the force-taking shaft of the chipper and the force-taking device of the tractor is at the same height. The PTO shaft and the power input should be closest to each other at this location.

4. Pull open the PTO shaft. Attach half of the shaft to the chipper so that the locking pin is locked. Place the other end of the chipper flush with the end of the tractor PTO shaft. Set the end side aside. Mark on the shield how much must be cut. The tubes must be so short that they cannot reach the bottom of any chipper location.

5. Cut the plastic pipe.

6. Cut a piece from the profile tube the same length as the piece you cut from the guard. Shorten the other half of the PTO shaft to the same length.

7. File off sharp edges of profile tubes.

▍Agricultural PTO Shaft Maintenance and Lubrication

The PTO shaft should be greased regularly to keep the universal joints from failing and to stop the shaft from seizing. Failure to grease your shaft regularly or as outlined in the PTO shaft’s maintenance schedule could result in end thrust potentially destroying the implement’s gearbox. It is recommended to grease standard universal joints every 20 hours or 8 hours for severe conditions. Remember! Grease follows the easiest path through internal ports to the four cross bearings. Overheating and poor-quality grease baked in one port will prevent grease from reaching that bearing, resulting in the failure of individual cross bearings. Most importantly, ensure that you fully open the guard cover to ensure grease flows to all cross bearings. Greasing through the small guard access hole is not good enough. Also, check the state of the PTO shaft safety guards; if they are damaged or in poor condition, arrange replacement assuring the safety of the operator.

▍Agricultural Gearbox and Weasler 77 Series PTO Shaft

Agricultural gearboxes are a crucial component in farm equipment as they control the speed and torque of the power being transferred from the tractor or other power source to the implement. The Weasler 77 series PTO shaft is often used in conjunction with agricultural gearboxes to facilitate the transfer of power from the gearbox to the implement.

The Weasler 77 series PTO shaft is designed to handle high torque loads and operate at a range of angles, making it well-suited for use with agricultural gearboxes that require heavy-duty driveline components. When paired with a gearbox, the Weasler 77 series PTO shaft works by connecting the output shaft of the agricultural gearbox to the input shaft of the implement, allowing the implement to operate at the desired speed and torque.

There are various types of agricultural gearboxes available, including rotary mower gearboxes, fertilizer spreader gearboxes, rotary cutter gearboxes, rotary tiller gearboxes, and flail mower gearboxes, each with its own specific application and speed/torque requirements. It is important to select the appropriate agricultural gearbox and PTO shaft combination for a given application to ensure the efficient and effective operation of the equipment.

Overall, the Weasler 77 series PTO shaft is a reliable and durable choice for use with agricultural gearboxes, providing high torque capacity, smooth operation, and compatibility with a variety of equipment brands and models.

▍Agricultural PTO Shaft Manufacturers

For 60 years, we have been manufacturing PTO drive shafts, safety devices, torque limiters, agricultural gearboxes, speed multipliers, and speed reducers for agricultural mechanization. As of today, we are certainly among the world leaders in engineering, producing, and commercializing agricultural PTO drive shafts. Our company also can make made-to-order PTO shafts with special yokes and lengths to meet your specific needs; when ordering or requesting a quotation on Made to-order PTO drive shafts, specify the style number and dimensions per drawing.

For more information about us, contact us right away. We will do our best to meet your requirements for the product and provide the most perfect after-sales services for you. Feel free to take a closer look around our pages, and if you have interested in it, please inquire to us about your favorite items. Welcome you connect with us or come to our factory to make an order with sample for the good development of our distribution.

▍Why Choose Our PTO Shaft?

1. Our Standard PTO shaft is a straightforward product, perfect for uncomplicated tasks. Designed to meet the demands of the cost-conscious, no-hassles-wanted client, our Standard PTO shaft is perfect for the equipment owner that values quality and wants an essential drive shaft to work as hard as they do.

2. When equipment requires a PTO shaft that provides the right amount of power for projects that range from the essential to the brawny, the Our classic PTO shaft delivers all the strength and durability you need. This PTO shaft gives operators the quality and durability they need to perform a variety of applications.

3. Our most powerful PTO shaft is designed to handle the most rigorous, continuous heavy-duty applications. Boasting the most features to choose from, our professional PTO drive shaft is ready to meet and exceed the needs of the most robust applications.