Rotary Rake Gearbox
We Can Replacement of Comer Model as Follows
Rotary Rake Gearbox K-789C 7.2:1
Model | K-789C |
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Input RPM | 540 |
Output torque (-daNm) | 19 |
Contains oil | No |
Oil SAE viscosity grade | SAE.90 EP |
Number of arms | 8 |
Diameter rotor | 2.6 m |
Gear ratio | 7.2:1 |
Input shaft | 1 3/8 Z6 |
Shaft type | 1 x 1.3/8 (Z6) |
Weight | 67Kg |
Rotary Rake Gearbox K-791A 7.2:1
Model | K-791A |
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Input RPM | 540 |
Output torque (daNm) | 19 |
Contains oil | No |
Oil SAE viscosity grade | SAE.90 EP |
Number of arms | 9 |
Diameter rotor | 2.8 m |
Gear ratio | 7.2:1 |
Input shaft | 1 3/8 Z6 |
Shaft type | 1 x 1.3/8 (Z6) |
Weight | 75Kg |
1. Exceptional Durability and Build Quality: Our rotary rake gearboxes are crafted from high-grade materials like hardened steel and cast iron, ensuring long-lasting durability. Designed to withstand extreme agricultural conditions, they resist wear, corrosion, and heavy loads, offering reliable performance season after season.
2. Optimized Power Transmission: Engineered for maximum efficiency, our gearboxes provide smooth and precise power transfer from the tractor's PTO to the rake's tines. This optimized transmission ensures consistent operation, reducing fuel consumption while enhancing overall productivity in the field.
3. Precision Engineering for Superior Raking: With advanced gear design and precise machining, our gearboxes enable accurate tine rotation for uniform and gentle handling of crops. This precision minimizes damage to hay or straw, ensuring better crop quality for baling or storage.
4. Low Maintenance Requirements: Designed with user convenience in mind, our rotary rake gearboxes feature high-quality seals and optimized lubrication systems. These reduce maintenance needs, minimize downtime, and save farmers valuable time and costs during busy harvesting periods.
Why Choose Our Rotary Rake Gearbox



5. Compatibility and Versatility: Our gearboxes are versatile and compatible with a wide range of rotary rake models and brands. This adaptability ensures that they can be easily integrated into your existing equipment without the need for extensive modifications.
6. Proven Reliability and Performance: Tested under rigorous agricultural conditions, our gearboxes consistently deliver reliable and efficient performance. Farmers trust our products to handle demanding workloads, ensuring uninterrupted operation and improved productivity in critical harvesting operations.
Key Components of Rotary Rake Gearbox
(1) Input Shaft: The input shaft connects to the tractor's Power Take-Off (PTO) and transmits rotational energy into the gearbox. It is designed to handle high torque levels and ensures smooth power delivery to the internal gearing system.
(2) Gears: The heart of the gearbox, the gears convert the input rotation into the desired speed and torque. Made from hardened steel, these gears are precision-machined to ensure smooth, efficient operation and long-term reliability in demanding agricultural environments.
(3) Output Shaft: The output shaft transfers the rotational motion from the gearbox to the rake's arms or tines. It is engineered for precise alignment and smooth operation, ensuring consistent tine movement for uniform raking of crops.
(4) Bearings: Bearings support the rotating shafts and reduce friction within the gearbox. These high-quality components ensure smooth motion, withstand heavy loads, and enhance the gearbox's durability, even under constant use in tough field conditions.
(5) Seals and Gaskets: Seals and gaskets prevent dirt, debris, and moisture from entering the gearbox while retaining lubricants inside. This protection is crucial for maintaining the integrity and performance of internal components, extending the gearbox's lifespan.
(6) Lubrication System: The lubrication system minimizes wear and heat generation within the gearbox by ensuring proper oil distribution to gears and bearings. A well-lubricated gearbox operates efficiently, reduces maintenance requirements, and performs reliably during extended periods of use.


Applications of Rotary Rake Gearbox
1. Hay Raking and Windrowing: Rotary rake gearboxes play a vital role in haymaking by powering the tines that collect and arrange hay into uniform windrows. This process ensures efficient drying, easier baling, and improved hay quality for animal feed or storage.
2. Straw Raking for Baling: After harvesting grain crops like wheat or barley, rotary rakes equipped with gearboxes are used to gather straw into rows. This makes it easier to collect and bale the straw for use as bedding, mulch, or biofuel.
3. Forage Crop Handling: Rotary rake gearboxes are essential for handling forage crops like alfalfa and clover. They help arrange these crops into clean windrows while minimizing leaf loss, preserving the nutritional content for silage or animal feed production.
4. Silage Preparation: In silage production, rotary rakes use gearboxes to create consistent rows of grass or other crops. Proper windrowing ensures even chopping and compaction during ensiling, leading to higher-quality, long-lasting silage for livestock.



How Does the Rotary Rake Gearbox Work?
(1) Power Transfer: The process begins with the tractor's power take-off (PTO) shaft transferring power to the input shaft of the Rotary Rake Gearbox. The gearbox is responsible for converting the high-speed, low-torque rotation of the PTO shaft into the slower, high-torque rotation required for operating the rotary rake.
(2) Gearing Mechanism: Within the gearbox, a system of gears helps adjust the speed and torque of the rotating motion. These gears transmit the power from the input shaft to the output shaft, which drives the rotary rake's tines or wheels.
(3) Rotary Rake Operation: The output shaft of the gearbox powers the rotary rake mechanism, causing the tines or wheels to rotate and collect the cut hay from the ground. As the rotary rake moves forward, the tines gather the hay and form it into windrows, which are organized rows of hay laid out for drying.

Agricultural PTO Shaft for Rotary Rake Gearbox
The connection between these two components is essential for the proper functioning of rotary rakes. The PTO shaft drives the rotary rake by transmitting power to the gearbox. The gearbox then reduces or redirects the rotational speed and torque to match the operational needs of the rotary rake. This ensures the rake's tines rotate at an ideal speed to collect and arrange hay or grass into neat rows, facilitating easy baling or drying.
Together, the PTO shaft and rotary rake gearbox form an integrated system that enhances the efficiency and precision of haymaking operations. Proper alignment and maintenance of both components are vital to prevent issues such as power loss, mechanical wear, or damage, ensuring smooth and long-lasting performance in agricultural tasks.
Type of Rotary Rake Gearbox for Sale
The gearbox typically consists of a durable housing made from cast iron or high-strength steel to protect the internal gears and bearings from dust, debris, and harsh environmental conditions. Inside the gearbox, bevel or spur gears are commonly used to convert the rotational motion from the input shaft into the desired speed and torque needed to drive the rotary rake's arms or rotors. The gearing is designed to withstand the heavy loads and repetitive stresses encountered during operation, ensuring reliability over extended periods.
A rotary rake gearbox is engineered for precision, as it ensures the consistent rotational speed of the rake's tines, which is critical for forming uniform windrows without damaging the crops. Additionally, it often includes features like grease fittings or oil reservoirs for lubrication, ensuring minimal friction and extended operational life. Proper maintenance of the gearbox is vital for the efficient functioning of the rotary rake, enhancing productivity in agricultural harvesting operations.