Description
Product Overview
The Sinoblu Aluminum Alloy Shaft Coupling is engineered to meet the demanding requirements of modern industrial power transmission systems. With a robust plum-shaped spider configuration, this coupling offers a compact footprint while delivering exceptional torque capacity. The overall dimensions measure 45 mm in diameter and 66 mm in length, providing a perfect fit for a wide range of shaft sizes, specifically accommodating bore diameters from 12.7 mm to 18 mm. Constructed from aviation‑grade aluminum, the body undergoes a precision anodizing process that enhances corrosion resistance and surface hardness, extending the service life even in harsh environments. Inside the coupling, a high‑performance polyurethane insert absorbs shock and dampens torsional vibrations, ensuring smooth operation and protecting downstream equipment. The design incorporates a flexible spider that offsets angular, radial, and axial misalignments, allowing for up to 2 degrees of angular displacement and 0.5 mm of radial offset without compromising performance. This combination of high‑strength materials, precise engineering, and flexible geometry makes the coupling ideal for applications ranging from conveyor drives to heavy‑duty gearboxes.
![[Product front view showing all components]](https://www.bakinggoods.store/wp-content/uploads/2026/07/ac315fe01a894ebdb463c013f361986b.jpg)
Usage
Designed for versatility, the Sinoblu coupling excels in a variety of industrial settings. It is particularly well‑suited for machinery that experiences frequent start‑stop cycles, variable loads, and exposure to moisture or chemicals. Typical installations include manufacturing assembly lines, material handling equipment, robotic arms, and agricultural machinery where reliable torque transfer is critical. The coupling’s ability to tolerate misalignment reduces the need for precision shaft alignment during installation, saving time and labor costs. Its lightweight aluminum construction contributes to overall system efficiency by minimizing rotational inertia, which is beneficial in high‑speed applications such as pumps and fans. Additionally, the polyurethane insert provides a quiet operating environment, making the coupling a preferred choice for noise‑sensitive facilities like food processing plants and clean rooms. The product’s compliance with ISO standards for dimensional accuracy and material quality ensures seamless integration with existing power transmission components.
Why Choose Us
Sinoblu stands out as a trusted manufacturer with a commitment to quality, innovation, and customer satisfaction. Every coupling undergoes a rigorous inspection process that includes full‑scale plug gauge verification, hardness testing, and dimensional checks to meet the H10 tolerance class. Our aluminum alloy is sourced from certified aerospace suppliers, guaranteeing uniform grain structure and superior fatigue resistance. The anodized coating not only protects against oxidation but also provides a sleek, low‑maintenance surface that resists scratching and wear. We back our products with a comprehensive warranty and a responsive technical support team that assists with installation guidance, troubleshooting, and spare part availability. By choosing Sinoblu, you benefit from a product that combines engineering excellence with practical features such as easy‑to‑install set screws, clear marking for bore size, and a design that minimizes heat buildup during prolonged operation. Our dedication to continuous improvement means that each batch incorporates feedback from field performance, ensuring that the coupling remains at the forefront of reliability and efficiency.
Key Features
- High torque capacity with a compact plum‑shaped spider design for space‑constrained installations.
- Durable aviation‑grade aluminum body with anodized finish resists corrosion and extends service life.
- Polyurethane insert absorbs shock, reduces vibration, and provides quiet operation.
- Flexible geometry tolerates angular, radial, and axial misalignment, simplifying installation.
- Comprehensive after‑sales support, warranty coverage, and technical assistance from Sinoblu experts.
FAQ
What shaft sizes are compatible with this coupling?
The coupling is designed for bore diameters ranging from 12.7 mm to 18 mm, making it suitable for a wide variety of standard shaft sizes used in industrial equipment.
Can the coupling handle misalignment?
Yes, the flexible spider design allows up to 2 degrees of angular misalignment and up to 0.5 mm of radial offset, reducing the need for precise alignment during installation.
Is the polyurethane insert replaceable?
While the insert is designed for long‑term durability, it can be replaced by a qualified technician if wear or damage occurs, ensuring continued performance.
What are the temperature limits for operation?
The coupling operates reliably within a temperature range of –20 °C to +120 °C, covering most indoor and outdoor industrial environments.
How does the anodized coating benefit the product?
The anodized coating provides excellent corrosion resistance, improves surface hardness, and maintains the aesthetic appearance of the coupling even after prolonged exposure to moisture or chemicals.




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