Machine Design

Stainless-Steel Beam Couplings

Flexbeam couplings now use Type-303 stainless steel.

Mechanical performance is comparable to other widely used stainless steels, such as 17-4 ph, but nonmagnetic properties are useful for magnetic-sensitive instrumentation such as magnetometers. Stainless-steel beam couplings offer superior torque and wind-up performance, though with higher inertia than their aluminum counterparts. A one-piece design and spiral cut pattern accommodate angular and parallel misalignment and axial motion, and ensure zero backlash and minimal wind-up. Flexbeam-2 couplings have excellent torque capabilities for precision components such as encoders and tachometers. Flexbeam-3 couplings are ideal for light-duty power transmission applications such as coupling servomotors to lead screws. Twenty different body sizes range from 10 to 38-mm OD and 2 to 19-mm bore.

Ruland Mfg.
6 Hayes Memorial Dr.
Marlborough, MA 01752
(508) 485-1000

Hide comments


  • Allowed HTML tags: <em> <strong> <blockquote> <br> <p>

Plain text

  • No HTML tags allowed.
  • Web page addresses and e-mail addresses turn into links automatically.
  • Lines and paragraphs break automatically.