Safety Coupling provides torque-overload protection.

Press Release Summary:



Series SK2 Coupling, with ball-detent system, is backlash free and will disengage within 1 to 3 msec when overload is detected. Single-position, multi-position, load-holding, and free-wheeling versions are available. Stainless steel bellow compensates for axial, angular, and lateral misalignment simultaneously. Torque range is 1.8 to 4,425 lb-in. Both shaft hubs are custom bored for shaft sizes of 0.16 to 2.36 in.



Original Press Release:


Precision Safety Coupling Series SK 2 with Clamping Hub


Taking up the challenge for greater technical demands in modern machine design and construction, R+W has developed the unique patented Model SK2 Safety coupling.

Torque overload protection is often overlooked in machine design until something jams resulting in expensive damage and down time. The R+W Series SK2 safety coupling was developed specifically for this purpose. It uses a patented ball detent
system that is absolutely backlash free and will disengage within 1 to 3 milliseconds when an overload is detected, making it ideal for CNC applications where over-travel and large cuts can seriously damage drive systems.

Four versions are available including a single position, multi-position, load holding, and free wheeling. These couplings are preset in the factory to a customer specified disengagement torque and can be adjusted in the field after installation.

These unique couplings are manufactured with a stainless steel bellow exhibiting very high torsional rigidity with zero backlash. An important feature of this design is the fact that the bellow can compensate for axial, angular, and lateral misalignment simultaneously.

The moment of inertia is also very low due to its low mass and low weight.

The SK2 couplings are available for a torque range of 0.2 to 500 Nm (1.8 to 4,425 in.lbs.). Both shaft hubs are custom bored for shaft sizes of 4 to 60 mm (0.16 to 2.36 in.).

Contact R+W America at 630.521.9911 for more information or visit us on the web at www.rw-america.com

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