Description
Product Overview
The Universal Joint Coupling from Generic is engineered as a precision brass connector that bridges two rigid shafts whose axes are not perfectly aligned. Measuring 3mm by 3mm at the pin diameter and extending 7mm in overall length, the component offers a compact footprint while delivering reliable torque transmission. The brass material provides a balance of strength, corrosion resistance, and smooth surface finish, which reduces friction and wear during continuous operation.
Each unit is manufactured to tight tolerances, ensuring that the joint rotates freely without excessive play. The design incorporates a miniature pin and bearing arrangement that distributes load evenly across the contact surfaces. This engineering approach extends the service life of the joint, making it suitable for high‑frequency applications such as hobby‑grade robotics, model ship propulsion, and small‑scale CNC spindle drives.
In addition to its mechanical attributes, the coupling features a simple installation process. The 3mm pin fits standard miniature shafts, and the open‑ended design allows for quick insertion and removal without the need for specialized tools. This ease of assembly accelerates prototyping cycles and reduces downtime during maintenance or part replacement.
The product is supplied as a single piece, identified by the model number ELLLBPPHA, and conforms to industry standards for miniature universal joints. Its lightweight construction—approximately 1.76 ounces per unit—makes it an excellent choice for applications where weight savings are critical, such as aerial drones or lightweight robotic arms.
Overall, the Universal Joint Coupling combines durability, precision, and versatility, positioning it as a go‑to component for engineers and hobbyists seeking reliable motion transfer in constrained spaces.
![[Product front view showing all components]](https://www.peloro.store/wp-content/uploads/2026/07/66b7bd2659394369971a4a845326e96b.jpg)
Usage
This coupling excels in environments where rotary motion must be conveyed across misaligned shafts. Model car enthusiasts often employ it to connect drive shafts to wheel hubs, allowing for slight angular deviations that occur during high‑speed maneuvers. Similarly, model ship builders use the joint to link motor shafts to propeller shafts, accommodating the natural flex of miniature hull structures.
In the realm of robotics, the joint serves as a pivotal link between servo motors and articulated limbs. Its compact size enables integration into tight joint spaces, while the brass construction tolerates the repetitive loading cycles typical of walking or gripping robots. DIY makers constructing 3D printer extruders or CNC machine axes also benefit from the joint’s ability to smooth out minor misalignments, reducing vibration and improving print or cut quality.
Beyond hobbyist applications, the coupling is suitable for educational labs where students experiment with gear trains and motion systems. Its transparent performance characteristics make it an ideal teaching aid for illustrating concepts such as angular velocity, torque transmission, and mechanical advantage.
When installed in lifting platforms or small conveyor systems, the joint’s durability ensures consistent operation under moderate loads. The brass material resists corrosion, allowing the component to function reliably in humid or mildly corrosive environments, such as workshop benches or outdoor prototype stations.
For any project that demands a reliable, low‑profile universal joint, this product provides a straightforward solution. Users should verify that the connected shafts conform to the 3mm pin diameter and that the operating torque does not exceed the recommended limits for miniature brass components.
Why Choose Us
Choosing Generic’s Universal Joint Coupling means selecting a component backed by rigorous quality control and a commitment to customer satisfaction. Each joint undergoes dimensional inspection to guarantee that the pin and bearing surfaces meet exacting standards, minimizing the risk of premature wear or binding.
Our brass alloy is sourced from reputable suppliers, ensuring consistent material properties across production batches. This uniformity translates to predictable performance, whether the joint is used in a hobbyist robot arm or a precision CNC spindle. The alloy’s natural resistance to oxidation also means the part retains its functional integrity even after extended exposure to moisture.
We understand that after‑sales support is crucial for technical products. Our dedicated service team is available to answer questions, provide installation guidance, and address any concerns that arise during the product’s lifecycle. Should a defect be identified, we offer a straightforward replacement process to keep your projects moving forward.
In addition to the physical product, we provide comprehensive documentation, including dimensional drawings, torque recommendations, and best‑practice installation tips. This information empowers users to integrate the coupling confidently, reducing trial‑and‑error time and enhancing overall project efficiency.
Finally, our competitive pricing reflects a balance between high‑quality manufacturing and affordability, making the Universal Joint Coupling an accessible option for both seasoned engineers and newcomers to mechanical design.
Key Features
- Compact 3mm x 3mm pin size fits standard miniature shafts for easy integration.
- Durable brass construction offers corrosion resistance and long service life.
- Smooth rotary motion reduces wear and maintains consistent torque transfer.
- Simple installation without special tools speeds up prototyping and repairs.
- Responsive customer support and clear documentation ensure confidence in every purchase.
FAQ
What is the maximum torque this universal joint can handle?
The joint is designed for low to moderate torque applications typical of hobby‑grade robotics and model mechanisms. While exact limits depend on the specific setup, we recommend staying below 0.5 Nm to ensure long‑term reliability.
Can this coupling be used with shafts larger than 3mm?
No. The pin diameter is precisely 3mm, and using larger shafts would result in a loose fit and potential slippage. For larger shafts, consider a universal joint sized to match the shaft diameter.
Is the brass material suitable for high‑temperature environments?
Brass performs well up to moderate temperatures (approximately 150°C). For applications that exceed this range, a metal alloy with higher temperature tolerance should be selected.
How do I install the coupling without damaging the pin?
Align the shafts carefully, insert the 3mm pin into the first shaft, then gently push the coupling onto the second shaft while maintaining alignment. Avoid forcing the part; if resistance is felt, re‑check alignment and ensure the shafts are clean.
What warranty does Generic provide for this product?
We offer a one‑year limited warranty covering manufacturing defects. If you encounter any issues within this period, contact our support team for a replacement or refund, subject to verification of the defect.
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