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CLUTCHES, BRAKES & COUPLINGS
FEATURE
Ruland one-piece inch-to-metric rigid coupling on shaft
INCH-TO-METRIC RIGID COUPLINGS NOW AVAILABLE AS A STANDARD PRODUCT FROM RULAND
Ruland now offers inch-to-metric rigid couplings off-the-shelf, enabling designers to select the coupling that best meets their application demands
R
igid couplings with inch-to-metric bores are now available from Ruland as a standard product, resulting in an even
wider range of off-the-shelf couplings. This expansion is the latest addition to the
company’s inch-to-metric standard coupling product line that includes seven types of motion- control couplings and universal joints. Instead of re-machining or ordering custom-made couplings, using off-the-shelf, inch-to-metric rigid couplings saves time and money.
FLEXIBILITY FOR DESIGNERS Ruland rigid couplings are often used to connect motors or gearboxes to ball screw or lead screw linear actuators. Many designers prefer them because they have higher accuracy and can transmit significantly more torque than equivalently sized flexible couplings. One-piece style couplings allow for a
simpler installation, while the two-piece style has a balanced design for smoother operation at speeds up to 4000rpm. Ruland supplies clamp-style couplings with premium hardware that tests beyond ISO strength class 12.9 standards. The company’s proprietary Nypatch anti-vibration coating is used to maintain holding power and torque capabilities in most industrial operating environments. “Ruland is well known in the flexible coupling
world for having the widest range of standard bore sizes, including inch-metric options,” commented Bill Hewitson, president of Ruland Manufacturing. “Expanding our rigid coupling line to incorporate these inch-metric combinations gives engineers designing with Ruland products more flexibility to use the coupling that best fits their application, be it a rigid or flexible type.”
DESIGN Ruland’s couplings are manufactured from meticulously selected bar stock in 2024 aluminium
Choice of Ruland rigid couplings in different styles, sizes and materials
for lightweight and low inertia, 1215 lead-free steel for the highest torque capacity, and 303
stainless steel for corrosion resistance. The company’s rigid couplings are manufactured in its ISO 9001:2015 certified manufacturing facility under strict quality controls using proprietary processes. The couplings are RoHS3, REACH, and Conflict Minerals compliant.
Ruland Manufacturing Co.
www.ruland.com
Acorn Industrial Services T: 0800 8766 441
www.acorn-ind.co.uk/ruland
INCH-TO-METRIC COUPLINGS: THE FACTS
• Ruland’s new standard inch-to-metric rigid couplings give users a wider range of off-the-shelf couplings • The standard product line includes seven types of inch-to-metric motion-control couplings and universal joints • With inch-to-metric couplings, designers have more flexibility in using the coupling that best fits their application
• Customers can save time and money by using off-the-shelf couplings • Ruland’s rigid couplings do not introduce misalignment or vibration into the system, making them suitable for high precision servo applications and shaft-to-shaft connections
• Ruland is the only manufacturer with precision-honed bores on straight bore rigid couplings for superior fit, torque transmission, and alignment
JUNE 2025 DESIGN SOLUTIONS 51
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