27 October 2014
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US manufacturer Ruland has developed thin line shaft collars for use in applications with outer diameter, width or weight limitations. The collars function as clamps, positioners, guides, spacers, and are available in a smaller profile than traditional collars.

Designed for applications with space and weight restrictions in industries such as assembly systems, packaging, printing, medical and food, they are particularly suitable for split hub componentry such as encoders. Two-piece styles have a balanced design for higher RPM applications.

The company claims that the collars deliver high holding power in a compact design suitable for a variety of light and medium duty applications. Most bore sizes are available with different outer diameter and width dimensions and screw sizes allowing the user to match space restrictions and holding power with their application requirements.

The collars are available in one- and two-piece clamp styles. Clamp style shaft collars have high holding power, allow for simple positioning adjustments and do not mar the shaft. Two-piece styles are balanced for better performance in high RPM applications. Halves are mated together throughout the manufacturing process for proper fit and alignment.

Thin line shaft collars are available in high strength type 2024 aluminium and 303 stainless steel for added corrosion resistance. Materials are sourced from select North American mills to ensure product consistency. Clamping hardware tests to or beyond DIN 12.9 standards for maximum torque capabilities. They are offered with bore sizes ranging from 5 mm to 40 mm. Custom bore sizes and geometry, mounting holes, and inch hardware are available as special designs.

All products are carefully manufactured in Marlborough, Massachusetts under strict controls using proprietary processes. 3-D Cad files, full product specifications, and additional technical information, are available from the website.

Paul Gay

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