
| Further Information | |
|---|---|
| Description | Blueline universal joint |
| A (mm) | 30.2 |
| A1 (mm) | 27 |
| B (mm) | 91.5 |
| B1 (mm) | 100 |
| Size | B6 80 |
| Cross Size (mm) | 30.2 x 91.5 x 27 x 100 |
| Maintenance | Every 20 hours |
| Type | PTO shaft drive |
| Weight | 742 g |
| EAN Codes | 4059139126859 |
| Category | PTO shafts & drive technology |
| Search Filters | PTO shafts, Universal joints |
| Part No. | 377377161 |

What is a Universal Joint?
A universal joint, commonly referred to as a Cross Kit, Cardan Joint, or U-Joint, is a mechanical device that enables two shafts, which are not aligned with each other, to rotate while maintaining equal angular velocity. This unique capability is essential in various mechanical systems, allowing for flexibility and efficient power transmission. Below are five key features that highlight the importance and functionality of universal joints:
1. Shaft Misalignment Tolerance
- Accommodating Misalignment: One of the most significant advantages of universal joints is their ability to tolerate misalignment between the connected shafts. This means that the shafts do not need to be perfectly aligned for the joint to function effectively, which is crucial in real-world applications where misalignment can occur due to vibrations, thermal expansion, or mechanical wear.
- Enhanced Durability: By allowing for some degree of misalignment, universal joints help reduce stress on the components of the machinery, thus enhancing the overall durability and lifespan of the system.
2. Angle Change Tolerance
- Flexibility in Design: Universal joints are designed to handle changes in the angle between the shafts they connect. This flexibility is vital in applications where the relative positions of the shafts may change during operation, such as in vehicles negotiating turns or machinery with moving parts.
- Operational Efficiency: By accommodating angle changes, universal joints ensure smooth power transmission even when the shafts experience varying alignments, contributing to the overall efficiency of the mechanical system.
3. Torque Transmission
- Effective Power Transfer: Universal joints are capable of transmitting rotational power and torque from one shaft to another, even when the shafts are at different angles. This capability is fundamental in many applications, such as automotive drivetrains, where the engine's power must be effectively delivered to the wheels.
- Versatility in Applications: The ability to transmit torque across different angles makes universal joints versatile components in various machinery, from agricultural equipment to industrial machinery, ensuring reliable performance under diverse conditions.
4. Efficient Transmission
- Minimizing Energy Loss: Universal joints are engineered to transmit torque with minimal energy loss, which is essential for maintaining optimal machine performance. Their design helps ensure that more of the generated power is effectively utilized, leading to increased efficiency.
- Cost-Effectiveness: By reducing energy loss, universal joints contribute to lower operational costs. This efficiency means that machinery can operate more effectively, ultimately enhancing productivity and reducing wear on other components.
5. Compact Design
- Space-Saving Solution: The compact design of universal joints allows them to be integrated into various mechanical systems without requiring excessive space. This is particularly beneficial in applications where space is limited, such as in automotive and aerospace engineering.
- Lightweight Construction: Many universal joints are made from lightweight materials, which can help reduce the overall weight of the machinery, improving fuel efficiency in vehicles and enhancing the performance of other equipment.
In conclusion, universal joints are essential components in many mechanical systems, providing the ability to connect shafts that are not perfectly aligned while maintaining efficient power transmission. Their key features—shaft misalignment tolerance, angle change tolerance, torque transmission capability, efficient operation, and compact design—make them indispensable in a wide range of applications. Understanding the functionality and benefits of universal joints is crucial for anyone involved in the design, maintenance, or operation of machinery that relies on these versatile components.

Our Production of Universal Joints
At FMP Group, we pride ourselves on our extensive production capabilities for universal joints, specifically designed to meet the diverse needs of various applications. Our commitment to quality and innovation ensures that we deliver reliable and high-performance products to our customers across multiple industries. Here’s a closer look at our production process and the range of universal joints we offer:
1. Diverse Product Range
- Variety of Designs: We manufacture a wide array of universal joints tailored for different applications, including automotive, industrial, agricultural, and marine uses. Each design is optimized to meet specific operational requirements while ensuring durability and efficiency.
- Customization Options: In addition to standard models, we also offer customization options. Customers can specify dimensions, materials, and other features to create a universal joint that perfectly fits their unique needs, enhancing performance in their specific applications.
2. Advanced Manufacturing Techniques
- State-of-the-Art Equipment: Our production facility is equipped with advanced machinery and technology that allows for precision manufacturing of universal joints. We utilize CNC machining, robotic assembly, and other cutting-edge techniques to ensure high-quality outputs.
- Quality Control Processes: Throughout the manufacturing process, we implement rigorous quality control measures. Every component undergoes thorough inspection and testing to meet our stringent standards, ensuring that the final products are reliable and durable.
3. Material Selection
- High-Quality Materials: We source only the best materials for our universal joints, including high-strength steels and other robust materials that can withstand demanding conditions. This careful selection of materials is crucial for the longevity and performance of the joints.
- Testing for Durability: Before production, all materials are tested for quality and performance characteristics. This step is essential to ensure that our universal joints can handle the stresses they will face in real-world applications.
4. Skilled Workforce
- Expert Engineers and Technicians: Our team comprises highly skilled engineers and technicians with extensive experience in manufacturing universal joints. Their expertise ensures that every product is designed and built to the highest standards.
- Continuous Training and Development: We invest in the ongoing training and development of our workforce to keep them updated on the latest manufacturing techniques and industry trends. This commitment to professional growth enhances our production capabilities and product quality.
5. Commitment to Sustainability
- Eco-Friendly Practices: At FMP Group, we are committed to sustainable manufacturing practices. We strive to minimize waste and energy consumption throughout our production processes, ensuring that our operations are environmentally responsible.
- Recycling Initiatives: We implement recycling initiatives for materials and packaging, contributing to a more sustainable production cycle and reducing our overall environmental impact.
6. Customer-Centric Approach
- Responsive Customer Service: We prioritize customer satisfaction and work closely with our clients to understand their specific needs. Our sales and support teams are always available to assist with inquiries, provide technical expertise, and ensure timely delivery of products.
- Feedback and Improvement: We actively seek feedback from our customers to continuously improve our products and services. This collaborative approach helps us stay ahead of industry trends and better serve our clients.
In summary, our production of universal joints at FMP Group is characterized by a diverse range of high-quality products, advanced manufacturing techniques, and a skilled workforce dedicated to excellence. By focusing on material quality, sustainability, and customer satisfaction, we strive to deliver universal joints that meet the varying demands of different applications. Our commitment to innovation and quality makes us a trusted partner for all your universal joint needs.
Choosing the Right Universal Joint
Selecting the appropriate PTO (Power Take-Off) shaft universal joint is crucial for ensuring optimal performance and reliability in your machinery. To make an informed decision, you should consider several key parameters that influence the functionality and durability of the joint. Here’s a detailed breakdown of the factors to evaluate:
1. Power and Torque Requirements
- Assessing Load Specifications: Begin by determining the power and torque that the universal joint must transmit during operation. This involves understanding the maximum torque levels and the operational demands of your machinery.
- Matching Capacities: Ensure that the selected joint can handle these power specifications without risk of failure. An undersized joint may lead to premature wear or catastrophic failure, while an oversized joint could add unnecessary weight and cost.
2. Shaft Size and Interface Type
- Measuring Dimensions: The physical dimensions of the shafts that the universal joint will connect are critical. Measure the diameter and length of both shafts accurately, as these will dictate the size and type of joint required.
- Connection Compatibility: Consider the type of interface used by the shafts—whether it’s spline, round, or square. The universal joint must be compatible with these interfaces to ensure a secure and effective connection, which is vital for optimal power transmission.
3. Angle Change Range
- Evaluating Angular Displacement: It’s important to assess the degree of angle changes that the joint will need to accommodate during operation. Different applications may experience varying levels of angular displacement due to dynamic loads or shifts in orientation.
- Selecting the Right Tolerance: If your machinery requires significant angle adjustments, choose a universal joint designed to handle these variations without compromising performance. A joint that cannot accommodate the necessary angular changes may lead to reduced efficiency and potential failure.
4. Working Environment and Conditions
- Analyzing Environmental Factors: The conditions in which the universal joint will operate play a significant role in its performance and longevity. Consider factors such as temperature extremes, humidity levels, and exposure to dirt, dust, or corrosive substances.
- Material Suitability: Different universal joints are designed for various environmental conditions. For instance, joints used in agricultural settings might need to be resistant to moisture and contaminants, while those in industrial applications may require materials that can withstand high temperatures and heavy loads.
5. Standards and Certification Requirements
- Compliance with Industry Standards: Ensure that the universal joint meets any relevant industry standards and certification requirements. Compliance with these regulations is crucial for safety, quality assurance, and optimal operation.
- Verification of Certifications: Check that the joint has the necessary certifications, such as ISO, CE, or other industry-specific standards. These certifications indicate that the joint has undergone rigorous testing and adheres to established performance criteria, providing assurance of its reliability in your application.
6. Cost and Value Considerations
- Budget Constraints: While it’s important to find a quality universal joint, consider your budget constraints as well. Weigh the cost against the features and benefits offered by different joints.
- Long-Term Value: Look for a joint that provides excellent performance at a reasonable price. Investing in a high-quality universal joint may lead to long-term savings by reducing maintenance costs and downtime, ultimately enhancing overall productivity.
In conclusion, choosing the right PTO shaft universal joint involves careful consideration of several critical parameters, including power and torque requirements, shaft size and interface type, angle change range, working environment, and standards compliance. By thoroughly evaluating these factors, you can select a universal joint that not only meets the specific demands of your application but also enhances the overall efficiency and reliability of your machinery. Making an informed choice is essential for achieving successful operational outcomes and ensuring the long-term performance of your equipment.

Structure of a Universal Joint
A universal joint is a crucial mechanical component designed to connect two shafts that are not in a straight line, allowing for the transmission of rotational motion while accommodating angular misalignment. The structure of a universal joint consists of several key components, each playing a vital role in its functionality. Below is a detailed overview of these components and how they work together to enable the joint's movement and operation:
1. Outer Yoke
- Primary Connection Point: The outer yoke is the part of the universal joint that connects to the drive shaft. It serves as the main attachment point, providing structural support for the entire joint.
- Robust Construction: Typically made from high-strength materials, the outer yoke is designed to withstand significant forces and stresses during operation. Its shape allows for flexibility while maintaining stability, which is essential for effective power transmission.
2. Inner Yoke
- Connection to the Driven Shaft: The inner yoke connects to the driven shaft, completing the link between the two shafts. This connection is vital for transmitting torque and rotational motion.
- Alignment and Stability: Like the outer yoke, the inner yoke is engineered to handle mechanical loads and accommodate angular misalignments, ensuring that the universal joint can function smoothly even when the shafts are not perfectly aligned.
3. Cross
- Torque Transmission: The cross is a central component responsible for transmitting torque from the drive shaft to the driven shaft. It rotates within the yokes, allowing for effective power transfer.
- Multi-Angular Functionality: The design of the cross enables it to maintain alignment while allowing for angular movement. This capability is essential for applications where the shafts may experience changes in alignment due to dynamic loads or shifts in position.
4. Bearing Cups
- Support and Rotation: Bearing cups are integral to the structure of the universal joint, serving to hold the bearings in place. They provide a smooth surface for the bearings, reducing friction during the rotation of the cross.
- Durability and Longevity: Designed to withstand wear and tear, these cups contribute to the overall longevity of the universal joint. Proper functioning of the bearing cups is crucial for maintaining smooth operation and minimizing maintenance needs.
5. Seal
- Protection Against Contaminants: The seal is a critical element that prevents dirt, moisture, and other contaminants from entering the bearing cups. This protection is vital for maintaining the integrity and performance of the internal components.
- Lubrication Retention: In addition to keeping contaminants out, the seal helps retain lubrication within the joint. Adequate lubrication is essential for reducing friction and ensuring smooth operation, which ultimately extends the lifespan of the joint.
6. Pin
- Structural Integrity: The pin plays a vital role in holding the outer and inner yokes together, ensuring that the components remain securely connected during operation. It contributes to the structural integrity of the universal joint.
- Load Distribution: The pin also aids in evenly distributing loads across the joint, enhancing its durability and performance. A well-designed pin is crucial for preventing premature wear and extending the life of the joint.
In summary, the structure of a universal joint is composed of several key components: the outer yoke, inner yoke, cross, bearing cups, seal, and pin. Each of these parts works in harmony to enable the joint's movement and operation, allowing for the effective transmission of torque and rotational motion between misaligned shafts. Understanding the structure and function of these components is essential for anyone involved in the design, maintenance, or operation of machinery that relies on universal joints, as they directly impact the efficiency and reliability of the systems in which they are utilized.
About FMP Group
FMP Group is a prominent leader in the PTO shaft market in China, specializing in the development, manufacturing, and marketing of Power Take-Off (PTO) shafts, industrial universal joints, and automotive drive shafts. Our products have gained a strong reputation in regions such as Europe, the United States, Asia, Australia, and North America.
We take pride in offering custom manufacturing options, including laser logo printing, to meet the specific needs of our clients. As one of the top three professional OEM suppliers for numerous agricultural machinery manufacturers, we hold prestigious certifications such as CE, TS/16949, and ISO 9001, which attest to our commitment to quality and industry standards.
Our systematic production setup, combined with a dedicated team, ensures high-quality outputs and timely delivery. In addition to our core offerings, we provide a wide range of related products, including agricultural gearboxes, chains, sprockets, pulleys, couplings, and other transmission components, as well as accessories for agricultural machinery.
We invite customers to collaborate with us by providing drawings or samples for custom orders, ensuring that we can deliver solutions tailored to their unique requirements.
Author: CX





