4SB Shear Bolt Torque Limiter Lawn Mower Parts PTO Shaft Parts PTO Shaft Yoke for Trailer

Description

We are excited to present the 4SB Shear Bolt Torque Limiter, a premium component designed specifically for lawn mower parts and PTO shaft applications. This high-quality product is an indispensable addition to various industries, including hotels, garment shops, building material suppliers, manufacturing plants, and farms, among others. Its robust design ensures optimal performance and reliability across diverse operational environments.

Key Features and Benefits

• Lightweight Design:
  Weighing only 2.3 KG, the 4SB Shear Bolt Torque Limiter is easy to handle and install, making it a convenient choice for operators. Its lightweight nature does not compromise its strength, allowing it to withstand the demands of intense agricultural and industrial applications.
• Versatile Applications:
  This product is engineered to cater to a wide array of applications, particularly in machinery that requires reliable torque management. Whether used in lawn mowers, trailers, or other equipment, the 4SB limiter is sure to enhance the functionality of your machinery.
• Warranty and Certification:
  Backed by a 1-year warranty, this torque limiter affirms its durability and quality assurance. Furthermore, it meets rigorous international standards, as evidenced by its ISO and CE certifications, providing customers with confidence in their purchase.
• Essential Component:
  The 4SB Shear Bolt Torque Limiter is designed to be an essential component in your machinery, protecting against torque overload and ensuring safe operation. Its reliable performance helps prevent mechanical failures, thereby extending the lifespan of your equipment.

The 4SB Shear Bolt Torque Limiter is a testament to quality engineering and innovative design. With its lightweight construction, versatile applications, and strong warranty support, it is the perfect choice for anyone looking to enhance the reliability and safety of their machinery. Equip your equipment with this essential component and experience the difference in performance and durability.

4SB Shear Bolt Torque Limiter Specifications

Advantages of Using a Shear Bolt Torque Limiter

A shear bolt torque limiter for a PTO (Power Take-Off) shaft is a simple yet highly effective mechanical device designed to protect agricultural machinery from the risks associated with torque overload. Below are some key advantages of utilizing a shear bolt torque limiter in your equipment:

1. Overload Protection

The primary function of a shear bolt torque limiter is to safeguard both the tractor and the attached implement from potential damage caused by excessive torque. The shear bolt is specifically engineered to break under conditions of overload, which effectively disconnects the power transfer between the tractor and the implement. This disconnection prevents damage to critical components of the driveline and machinery, ensuring that repairs and downtime are minimized.

2. Ease of Maintenance

One of the standout benefits of shear bolt torque limiters is their straightforward design, which necessitates minimal maintenance. Operators typically only need to check the condition of the shear bolt periodically and replace it as necessary. This simplicity reduces the time and effort required for upkeep, allowing operators to focus more on their work rather than on complex maintenance routines.

3. Ease of Installation

Installing and replacing shear bolts is a simple and efficient process that can usually be completed quickly and without the need for specialized tools. This ease of installation is particularly advantageous in agricultural settings, where downtime can impact productivity. Operators can swiftly replace shear bolts in the field, ensuring that their machinery remains operational with minimal disruption.

4. Immediate Response to Overload

In the event of a torque overload, the shear bolt responds instantly by breaking, providing immediate disconnection of the power transfer. This rapid action is crucial in preventing further mechanical failures, as it halts the transmission of excessive torque before it can cause significant harm to the equipment. The proactive nature of this design helps to ensure the longevity and reliability of agricultural machinery.

5. Wide Application Range

Shear bolt torque limiters are versatile components that can be utilized with a variety of agricultural implements, including mowers, balers, and tillers. This adaptability makes them suitable for numerous applications within the farming sector, allowing operators to equip different types of machinery with the same reliable protective device. Their wide application range enhances their value and effectiveness across various farming operations.

In summary, the advantages of using a shear bolt torque limiter are significant, offering essential protection against torque overload, ease of maintenance and installation, immediate response to potential overloads, and versatility across different agricultural implements. Incorporating a shear bolt torque limiter into your machinery not only enhances operational efficiency but also contributes to the overall safety and longevity of your equipment.

Applications of the Shear Bolt Torque Limiter

A shear bolt torque limiter on a PTO (Power Take-Off) shaft is an essential safety device in agricultural machinery, specifically designed to protect equipment from the damaging effects of torque overload. This simple yet effective mechanism is critical in various scenarios where a sudden increase in load or blockage could lead to significant damage. Below are some common applications of shear bolt torque limiters in the agricultural sector:

1. Harvesting Machinery

In harvesting equipment, such as combines and forage harvesters, shear bolt torque limiters play a vital role in preventing damage during heavy or obstructed harvesting operations. When these machines encounter dense crops or unexpected obstacles, the shear bolt breaks, disconnecting power and safeguarding the machine from mechanical failure. This protection is crucial for maintaining operational efficiency during peak harvesting seasons.

2. Tillage Equipment

Shear bolt torque limiters are extensively used in tillage implements like plows, harrows, and cultivators. These implements often encounter hidden obstacles, such as large stones or hard soil clumps. The torque limiter ensures that when such obstacles are struck, the shear bolt will break, preventing damage to the implement and allowing for uninterrupted tillage operations. This feature enhances the durability of tillage equipment and reduces maintenance costs.

3. Rotary Cutters and Mowers

In rotary cutters and mowers, shear bolt torque limiters provide essential protection when the equipment hits obstructions like rocks or thick roots. When the blades encounter these obstacles, the shear bolt shears off, preventing damage to both the blades and the drive mechanism. This protective action allows operators to continue mowing or cutting without the risk of costly repairs or downtime.

4. Balers

For balers, especially round balers, shear bolt torque limiters are crucial in ensuring that the machinery does not become overloaded when processing large amounts of crop material. Overloading can lead to mechanical failures that disrupt operations and necessitate expensive repairs. The torque limiter allows the baler to function efficiently while safeguarding against excessive torque, ensuring a smooth baling process.

5. Seeders and Planters

In seed drills and planters, shear bolt torque limiters protect the machinery from damage due to clogs or excessive resistance, particularly when planting in tough soil conditions. By shearing under excessive load, the torque limiter prevents damage to the planting mechanism and ensures that seeds are planted uniformly and effectively, contributing to better crop yields.

6. Manure Spreaders

Shear bolt torque limiters are vital for manure spreaders, where they protect the driveline from torque overload when spreading varying densities of manure. As the spreader encounters different material densities, the torque limiter ensures that the power transfer is interrupted upon reaching critical load levels, preventing damage to the spreader and ensuring consistent application of manure.

In summary, the applications of shear bolt torque limiters in agriculture are diverse and essential for maintaining the safety and efficiency of various machinery. From harvesting and tillage to mowing and planting, these devices provide crucial protection against torque overload, allowing for smoother operations and reducing the risk of mechanical failures. By integrating shear bolt torque limiters into your agricultural equipment, you can enhance performance, prolong the lifespan of your machinery, and ensure reliable operation across all farming tasks.

Agricultural PTO Shaft Torque Limiter Types

In agricultural machinery, PTO (Power Take-Off) shaft torque limiters are essential devices designed to protect equipment from damage caused by torque overload. These limiters act as safety mechanisms, ensuring that excessive force does not lead to mechanical failure. Various types of PTO shaft torque limiters cater to different operational needs and specifications. Below is an overview of the common types:

1. Shear Bolt Torque Limiter

The shear bolt torque limiter is one of the most widely used types in agricultural applications. It operates using a specially designed shear bolt that is meant to break under excessive torque. When the torque exceeds a predetermined threshold, the bolt shears off, effectively disconnecting the drive between the tractor and the implement. This type is common in various implements, such as mowers, balers, and tillers. It is particularly ideal for situations where overload conditions are clear and easily detectable, providing a straightforward means of protecting machinery without the need for complex electronic systems.

2. Friction Clutch Torque Limiter

The friction clutch torque limiter functions by allowing slippage when the torque exceeds a preset level. Instead of breaking, this limiter absorbs the excess force, preventing damage to the machinery while enabling continued operation. This design is especially useful in applications where gradual overload conditions might occur, such as in rotary tillers or seeders. Operators appreciate this type for its ability to minimize the frequency of shear bolt replacements, reducing maintenance efforts while maintaining effective protection against torque overload.

3. Ratchet Torque Limiter

The ratchet torque limiter features a unique mechanism that allows rotation in one direction while locking or slipping in the opposite direction when an overload condition is detected. This design is particularly suitable for implements like augers, which require unidirectional operation. The ratcheting mechanism provides a reliable means of preventing damage during heavy loads or sudden stops, ensuring that the equipment can operate efficiently without risking mechanical failure.

4. Overrunning Clutch Torque Limiter

The overrunning clutch torque limiter is engineered to allow free rotation in one direction while engaging the clutch in the opposite direction. This type can also incorporate a torque-limiting feature that disconnects under overload conditions. It is commonly used in mowers and rotary cutters, where it allows the implement to overrun when the tractor slows down. This functionality is crucial for maintaining smooth operation and preventing stalling, particularly in applications where consistent power delivery is essential.

In summary, the various types of PTO shaft torque limiters, including shear bolt, friction clutch, ratchet, and overrunning clutch limiters, each serve unique purposes in agricultural machinery. By selecting the appropriate type based on specific operational needs, operators can enhance the safety, efficiency, and longevity of their equipment, ultimately leading to improved productivity in agricultural operations.

How Does the Shear Bolt Torque Limiter Work?

A shear bolt torque limiter for a PTO (Power Take-Off) shaft is a straightforward yet highly effective mechanical device designed to protect agricultural machinery from the detrimental effects of torque overload. Understanding its operation can help you appreciate its importance in maintaining the integrity of your equipment. Here’s a detailed look at how it works:

Normal Operation

During regular operation, the shear bolt functions as a critical connection between the PTO shaft and the attached implement, such as a mower, baler, or tiller. The bolt is specifically engineered to be strong enough to transmit the required torque from the tractor to the implement without breaking under typical operating conditions. This secure connection allows the implement to perform its intended tasks efficiently while ensuring that the power transfer is reliable and effective.

Torque Overload Detection

The effectiveness of the shear bolt torque limiter lies in its designed breaking point. Each shear bolt has a specific shear strength that determines how much torque it can safely withstand. When the torque transmitted through the PTO shaft exceeds the safe operating limits—often due to obstructions in the field, overloads from heavy material, or other mechanical issues—the force applied surpasses the bolt’s shear strength. This overload condition is critical as it signals that the system is under stress and could potentially lead to damage if not addressed quickly.

Activation

Once the torque exceeds the predefined threshold, the shear bolt reacts by breaking or shearing off. This breakage is an intentional mechanical response to the overload, acting as a protective mechanism. By shearing off, the bolt effectively serves its purpose of preventing damage to the more critical components of the machinery, such as the tractor’s PTO system and the attached implement. This design minimizes repair costs and downtime, preserving the functionality of the equipment.

Disengagement

The breaking of the shear bolt results in an immediate disengagement of the drive between the tractor and the implement. This quick action halts the transfer of excessive torque, protecting both the tractor and the implement from potential damage that could arise from continued operation under overload conditions. By disconnecting the power transfer, the shear bolt torque limiter ensures that the machinery can avoid serious mechanical failures, thereby enhancing safety and operational reliability.

In summary, the shear bolt torque limiter is a vital component in agricultural machinery that safeguards against torque overload. Its simple yet effective design allows for normal operation while providing a reliable means of protection in the event of unexpected overload conditions. Understanding how it works can help operators appreciate the importance of regular maintenance and timely replacements, ensuring that their equipment remains safe and efficient in the field.

PTO Shaft Shear Bolt Torque Limiters Troubleshooting

Troubleshooting issues with PTO (Power Take-Off) Shaft Shear Bolt Torque Limiters is crucial for maintaining the functionality and safety of your agricultural machinery. Identifying and resolving common problems not only enhances equipment performance but also extends the lifespan of your machinery. Below are some prevalent issues you may encounter, along with their causes and corresponding troubleshooting steps:

1. Frequent Shearing of the Bolt

• Causes:
  • Excessive Load: The implement may be subjected to loads beyond its capacity, leading to frequent breakage of the shear bolt.
  • Incorrect Use of the Implement: Misuse or improper operation of the machinery can result in unintended stresses on the shear bolt.
  • Incorrect Bolt Size or Grade: Using a bolt that does not match the manufacturer’s specifications in terms of size, grade, or shear strength can lead to premature failure.
• Solutions:
  • Follow Manufacturer Guidelines: Ensure that the implement is used according to the manufacturer’s instructions, particularly regarding load limits and operational practices.
  • Use Correct Replacement Parts: Replace the shear bolt with one that matches the exact specifications recommended by the manufacturer, including size, grade, and shear strength. This will help ensure proper function and reliability.

2. Bolt Not Shearing When Expected

• Causes:
  • Bolt Strength: The bolt used may be too robust or of a higher grade than necessary, which prevents it from shearing under overload conditions.
  • Insufficient Load: The implement may not be experiencing enough load to reach the shear point, leading to a lack of activation when needed.
• Solutions:
  • Verify Bolt Specifications: Check that the correct shear bolt is being utilized, ensuring it is appropriate for the specific application and operating conditions.
  • Assess Implement Usage: Review whether the implement is being operated correctly and under the proper conditions. Adjust operational practices as necessary to ensure adequate load is applied during use.

3. Difficulty in Removing Sheared Bolt

• Causes:
  • Corrosion or Rust: Over time, corrosion or rust can cause the bolt to seize in place, making removal challenging.
  • Improper Shearing: The bolt may have sheared off in a manner that creates a jagged edge, making it difficult to grip or extract.
• Solutions:
  • Apply Penetrating Oil: Use penetrating oil on the remnants of the sheared bolt and allow it to soak for a sufficient period to loosen any corrosion.
  • Use Proper Tools: Employ appropriate tools, such as vise grips or bolt extractors, to carefully remove the broken bolt without causing further damage to the surrounding components.

4. Uneven Wear or Damage to the Limiter

• Causes:
  • Continuous High Stress: Ongoing operation under high stress can lead to premature wear and damage to the torque limiter.
  • Lack of Maintenance: Neglecting regular maintenance or improper installation can contribute to uneven wear and functionality issues.
• Solutions:
  • Regular Inspections: Conduct routine inspections of the torque limiter for signs of wear, damage, or deformation. Replace any worn or damaged parts as necessary to maintain optimal functionality.
  • Ensure Proper Installation: Verify that both the torque limiter and the shear bolt are installed correctly according to the manufacturer’s specifications. Proper installation is key to ensuring that the components perform as intended.

By understanding these common issues and their solutions, operators can effectively troubleshoot problems with PTO shaft shear bolt torque limiters, ensuring that their agricultural machinery remains safe, efficient, and reliable. Regular maintenance and adherence to manufacturer guidelines are essential for preventing these issues and prolonging the lifespan of your equipment.

Maintenance of the Shear Bolt Torque Limiter

Maintaining the shear bolt torque limiter in agricultural machinery is critical for ensuring safety, preventing mechanical damage, and extending the life of your equipment. The shear bolt torque limiter is designed to protect PTO shafts and other mechanical systems by shearing the bolt under excessive load, preventing further damage to the machinery. Proper maintenance ensures that this protective feature functions correctly when needed. Below are key maintenance steps to help keep your shear bolt torque limiter in optimal working condition.

Key Maintenance Steps for a Shear Bolt Torque Limiter:

1. Regular Inspection
   • Action: Regularly inspect the torque limiter for signs of wear, corrosion, or damage. This includes checking the shear bolt, housing, and all associated components.
   • What to Look For:
     • Wear: Look for signs of wear or excessive play in the limiter’s components, which could indicate that it has been subjected to excessive stress.
     • Corrosion or Rust: Corrosion can impair the function of the torque limiter and cause the shear bolt to seize or fail prematurely.
     • Shear Bolt Condition: Pay particular attention to the shear bolt itself. Ensure that it is not bent, cracked, or showing signs of premature wear. Any deformation of the bolt may indicate an incorrect bolt type or an overload condition that is causing undue strain on the system.
   • Tip: Regular inspection can help catch issues early, before they lead to more serious damage or failure.
2. Correct Shear Bolt Replacement
   • Action: Always replace the shear bolt with one that matches the exact specifications provided by the manufacturer. This includes size, length, grade, and shear strength.
   • Why It’s Important: Using a shear bolt that does not meet the required specifications can result in poor performance or failure to protect the machinery when needed. For example, a bolt that is too strong may not shear under the expected load, while a bolt that is too weak could shear prematurely.
   • Always Have Spare Bolts: It is advisable to keep a supply of spare shear bolts on hand to ensure quick replacement when needed. After a shear bolt breaks—indicating that it has done its job and protected the machinery—it must be replaced before the equipment is used again.
   • Tip: Ensure that spare bolts are stored in a clean, dry location to prevent corrosion or damage before use.
3. Proper Installation of Shear Bolts
   • Action: When installing a new shear bolt, follow the manufacturer’s torque specifications carefully. Tighten the bolt to the correct torque value to ensure that it is installed properly.
   • What to Avoid:
     • Over-tightening: Over-tightening can increase the force required for the shear bolt to break, making it more difficult for the bolt to perform its protective function when needed. This can lead to damage to the PTO shaft or other components.
     • Under-tightening: If the bolt is not tightened enough, it may shear prematurely under normal loads, reducing the overall effectiveness of the torque limiter and causing unnecessary downtime.
   • Correct Alignment: Ensure that the shear bolt is properly aligned and seated in its housing. Misalignment can prevent the bolt from functioning as designed and may lead to mechanical failure.
   • Tip: Always refer to the manufacturer’s installation instructions to ensure the correct torque specifications and alignment.
4. Cleaning and Lubrication
   • Action: Keep the area around the torque limiter free from dirt, debris, and rust. Accumulated dirt or debris can interfere with the operation of moving parts and may cause excessive wear or jamming.
   • Cleaning: Periodically clean the torque limiter and its housing to prevent the buildup of dirt or contaminants. Use a soft brush or compressed air to remove debris from hard-to-reach areas.
   • Lubrication: Some torque limiters may have moving parts that require lubrication to function smoothly. If the manufacturer recommends lubrication, apply the appropriate type of lubricant to prevent friction and wear. Be sure to follow the manufacturer’s guidelines for lubrication frequency and type.
   • Tip: Regular cleaning and lubrication can prolong the life of your shear bolt torque limiter and ensure it functions reliably when needed.

Why Choose FMP’s Shear Bolt Torque Limiter for PTO Shaft?

FMP Drive Shaft Co., Ltd., based in Hangzhou, Zhejiang Province, is strategically located just two hours from Pudong Airport and one hour from Xiaoshan Airport, as well as being close to the East Hangzhou Station. Our facility spans over 12,000 square meters and is home to a dedicated team of more than 100 professionals. We specialize in the development, manufacturing, and marketing of a wide range of products, including PTO shafts, agricultural gearboxes, PTO shaft accessories, U-joints, torque limiters, PTO tubes, yokes, adaptors, industrial cardan shafts, car driveshafts, and U-joint coupling shafts.

With an annual turnover of 60 million RMB (approximately 9 million USD), our business continues to grow year after year. Our products have earned a stellar reputation among customers in Europe, America, Asia, Australia, and North America. We proudly serve as a leading OEM supplier for numerous agricultural implement manufacturers in the domestic market.

At FMP, we adhere to our core principles: Quality First, Quick Delivery, and Competitive Pricing. We hold several prestigious certifications, including CE, TS/16949, and ISO9001, supported by systematic manufacturing processes and a robust quality control team to ensure the highest standards in both quality and delivery.

We warmly invite our friends and partners to visit us and explore opportunities for mutually beneficial long-term cooperation. Currently, we export our products to valued customers in over 50 countries across five continents. With a commitment to excellence in our product range, FMP is dedicated to becoming a global leader in the industries we serve.

Author: CX