The R+W SK1 150 D safety coupling is a precision overload protection device, often also referred to as a torque limiter or overload clutch. Developed by R+W Antriebselemente GmbH, a global leader in couplings and safety components, it is designed to protect rotating equipment from damage in the event of sudden overload.

Manufactured from hardened steel and steel, the SK1 150 D offers a robust construction with a 45–150 Nm adjustable torque range and a maximum torque of 150 Nm. Its compact length of 58 mm and outer diameter of Ø92 mm allow for easy integration into space-constrained drive systems. The Ø35 mm H7 bore (D1) ensures precise shaft fit and secure torque transfer. As part of the SK1 series (size 150), it is fully compatible with other R+W drive components, providing reliable safety and consistent release characteristics.