What are Curved Jaw Couplings?

Release Date: August 25, 2011

Curved jaw couplings are well suited to servo applications where accuracy of torque transmission is required. The curved jaws profile helps to reduce deformation of the spider and limit the effects of centrifugal forces during high speed operation.

Transcript

The curved jaw coupling is a motion-controlled coupling consisting of two aluminum hubs and an elastomeric element call " the spider". The jaw coupling spider is available with different levels of stiffness to allow the user to tailor the coupling's performance to their application. A hard spider provides the greatest torsional stiffness and strength, while a soft spider provides the greatest dampening capability. Curved jaw couplings are well suited to several applications where accuracy of torque transmission is required. The curved jaw hubs are press fitted into the spider to allow the coupling to operate with zero backlash. The curved jaw profile helps to reduce deformation of the spider and limit the effect of centrifugal forces during high-speed operations. Jaw couplings are not well suited for parallel misalignment or axial motion because of the compressed fit of the spider. To ensure full angular misalignment capabilities, raised contact points were added to the spider limbs to maintain proper spacing between the coupling hubs and the spider. Jaw couplings are highly customizable due to their three-piece design. Inch and metric hubs either set screw, clamp style, keyed or keyless are interchangeable and can be combined into a single coupling as long as they have the same outside diameter.

Helpful Resources for Curved Jaw Couplings

5 Reasons to Consider Using Jaw Couplings - This product spotlight gives the top 5 reasons of why you should be using a Jaw Coupling

Choose a Jaw Coupling - This page will shows you all the variety of Jaw Couplings that Ruland offers.

Coupling Comparison Guide -This is a chart that shows the comparison of Ruland servo coupling on critical performance characteristic.

Zero Backlash Jaw Couplings for Machine Vision Systems - Ruland offers zero backlash jaw couplings for the demanding requirements of start and stop machine vision systems used in industries such as semiconductor, medical, solar, and packaging. The dampening characteristics of Ruland’s jaw couplings reduce settling time and shock loads, making them ideal for these environments.

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