Helical Products Company, Inc.
Rotating Shaft Couplings - Machined Springs

Flexible Shaft Couplings
Our most popular product, using single piece construction, the HELI-CAL Flexure® Concept, and any combination of bore diameters, materials, or end connections...

New Power Transmission Coupling
Features Interchangeable Bushings - The new PF Series power transmission coupling uses the proven HELI-CAL Flexure concept to provide reliable torque transmission between 1/2 - 1 3/4 inch shaft sizes, while allowing for substantial angular and parallel misalignment compensation.

The PF Series (PowerFlex) features the convenience of interchangeable bushings, providing for quick and easy changes in bore sizes, while using the same coupling center section. This enables fast initial delivery, and facilitates easy and quick changing of the coupling's bore sizes without re-machining when the coupling is already in use.

By designing the tapered bushing hubs to hold more torque than the maximum torque capacity of the coupling, sizing and placement of the keying is no longer an issue. Other benefits of the product include: no maintenance, no lubrication, and zero backlash.

Precision Machined Springs
The most demanding compression, torsion, and lateral spring applications can benefit from the HELI-CAL Flexure® Concept because of their inherent flexibility. Overall system designs can be enhanced because the HELI-CAL Flexures® increase precision, require less space, and reduce costs.

And there's more...
We can create a coupling tailored to the specific needs for your application. Here are just a few brief examples of past custom couplings we've developed. Or view our more in-depth Flexure Facts, a collection of custom couplings that were developed for projects ranging from space exploration to office furniture to surgery performing robots . . . and more.