The FLEXXOR is a diaphragm flexible shaft coupling that has been widely used since the1960’s. It operates by carrying torque through thin spokes between an inner and outer rim, much like a bicycle wheel. Paired with Anderson Keyless Clamp Hubs, they can be installed on straight or tapered shafts in only a few minutes, yet carry tremendous amounts of torque. The FLEXXOR is an excellent solution for high-speed applications and situations with significant axial and/or angular misalignment.
For applications with short shaft-to-shaft spacing or where reduced moments are needed, see our page on Close Coupled and Reduced Moment Couplings.
Extreme Flexibility in High-Speed, High-Torque Applications
FLEXXOR flexible shaft coupling offers complete application flexibility
Factory assembled elements simplify installation of FLEXXOR shaft couplings. There are no loose parts so that FLEXXOR shaft couplings maintain balance. Bolts are delivered in sets and are weight balanced on high speed or API applications.
Unmatched Benefits of the FLEXXOR Flexible Shaft Coupling
Value to User
|Multiple paths of torque transmission share the load||Scratch or other damage to a diaphragm will not destroy coupling.|
|No lubrication or maintenance required||Reduces maintenance cost|
|Very low spring rates||Low forces on shafts, bearings, and seals for longer system life.|
|Dynamically balanced||No coupling related vibrations|
|Internal spin-off protection||Plant safety in case of a machine malfunction.|
|Easy hub adjustment for flange to flange spacing||Faster installation and no hot work permits required. No shim
|Spacer or reduced moment designs||Outstanding application flexibility|
The two most common high-performance FLEXXOR shaft couplings are the C and CC models. Torque is transmitted from the inner row of permanent fasteners through the spoke-like membranes to the outer ring of fasteners. The outer fasteners connect the diaphragms to the hub ring. Fasteners can be stainless steel rivets or shear bolts.
The FLEXXOR C model shaft couplings consist of a single set of diaphragms at each end of either a tubular or solid spacer.
CC FLEXXOR model shaft couplings use two sets of diaphragms at each end of the spacer. Therefore, CC models have twice the axial travel and 1⁄2 the spring rate of C model couplings.
Anderson Clamp Hubs – 4000 series or equivalent alloy steel heat treated to 130,000 PSI UTS minimum. Hub rings, sleeves – 1018 or 1026 carbon steel or 4000 series alloy.Diaphragms – 17-7PH, 301 full hard.Bolts – AISI 4140, 4340, 6150, 8740 alloy steel heat treated to grade 8 minimum.Locknuts – grade C minimum Special materials available such as INCO 718, Beryllium copper, Titanium, Monel.