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Clutches & Brakes

Clutches & Brakes

Electromagnetic, mechanical, one-way and torque limiters.

Also searched as: one way clutchtorque limiterelectromagnetic brakeslip clutchoverrunning

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About clutches & brakes

Clutches and brakes are essential power transmission components used for controlling torque, speed, and motion in machinery. This category encompasses a variety of types, including electromagnetic, mechanical, one-way, and torque limiting devices. Electromagnetic clutches and brakes engage or disengage through an electric current, offering precise control and rapid response. Key selection criteria include static torque, dynamic torque, voltage (VDC), current (A), and power consumption (W). Mechanical clutches and brakes, often actuated manually or pneumatically, rely on friction to transmit or absorb torque. One-way clutches, also known as overrunning clutches, allow power transmission in one direction and free-wheeling in the opposite, commonly specified by bore diameter, outer diameter, and torque capacity (Nm). Torque limiters, or slip clutches, protect machinery from overload by disengaging or slipping when a preset torque value is exceeded. Critical specifications for torque limiters include release torque (Nm), bore diameter, and operating speed (rpm). Common materials for friction surfaces include organic compounds, sintered metals, and ceramics, chosen for their wear resistance and friction coefficients. Housings are typically made from steel or aluminum, with finishes like black oxide or anodization for corrosion protection.

How to choose

When selecting clutches and brakes, first determine the required torque capacity (Nm) based on the application's load and safety factors. Next, consider the actuation method: electromagnetic for precise, remote control; mechanical for robust, direct engagement; or one-way for directional power flow. Evaluate the operating environment, including temperature and potential contaminants, to choose appropriate materials and sealing. For torque limiters, define the maximum allowable overload torque to protect the system. Finally, verify mounting dimensions, shaft diameters, and operating speed (rpm) compatibility to ensure proper integration into the machine design.