Rigid Couplings for Medical Applications

Medical applications benefit from the high torque capacity and torsional stiffness of the rigid coupling.

Ruland offers rigid couplings for a wide variety of medical applications including test and measurement, imaging, patient positioning, and liquid handling such as chromatography and drug discovery.


Proprietary machining processes ensure a fine finish and superior performance
Why Ruland Rigid Couplings?

  • Precision honed bores on straight bore rigid couplings for superior shaft alignment, fit and holding power
  • Proprietary Nypatch® coating on hardware resists vibration and maintains holding power
  • Balanced design on two-piece rigid couplings for higher RPM capabilities
  • Carefully made in our Marlborough, MA factory with large stocks for immediate delivery

Ruland rigid couplings are zero-backlash, torsionally stiff, and offer a high torque capacity. Straight bore couplings are precision honed for proper fit and alignment, which is important for applications that require strict control of tolerances. Precision honed bores assure a larger percentage of shaft contact for greater torque transmission. Nypatch® anti-vibration hardware prevents the screws from loosening during operation for increased performance and reliability.

Ruland rigid couplings are available in high grade aluminum for low inertia, lead-free carbon steel for increased holding power, and 303 stainless steel for sanitized environments. A large number of standard sizes are available in straight and step bore combinations ranging from 1/8˝ to 2˝ (3 to 50 mm). 316 stainless steel rigid couplings are also available by special order and utilize 316 stainless steel hardware for extra corrosion resistance. Special designs, keyways, and combination inch to metric bores are also offered.

All Ruland products are RoHS and REACH compliant. Rigid couplings are part of Ruland’s complete product line which includes shaft collars and five types of flexible couplings with zero-backlash: beam couplings, bellows couplings, oldham couplings, disc couplings, and curved jaw couplings.

© 2019 Ruland Manufacturing Co., Inc. All rights reserved