About lightweight - spring-applied brakes
Due to small electric motors, mobile applications, such as battery-powered tools, collaborative robots or stair lifts, require light but powerful electromagnetic brakes. Kendrion (Aerzen) GmbH has recognized this market demand and has developed an innovative concept. In the patented method, the spring-applied brake is embedded in a plastic housing. The new design not only results in a very light brake with improved performance but also minimizes electromagnetic losses. Compared to existing products, the innovative spring-applied brake is up to 10% smaller and up to 65% lighter. Therefore, it is used wherever smaller and lighter brakes are needed. The plastic brakes are available with braking torque of 0.5 to 2.0 Nm.
The innovative spring-applied brake impresses with its very low weight
The reason for this is the design of the brake: Only the components necessary for the magnetic flux are made of magnetically conductive material. The remaining profile is predominantly made of plastic. This achieves an optimum magnetic design. In order to achieve the necessary magnetic flux, a lower coil power is required due to the smaller iron components. Also no scattering losses have to be compensated. Further, this construction results in short shifting times. The one-piece rotor also contributes to the optimization. It is composed of a compressible friction lining mass without a carrier body and a polygonal inner profile. The motor shaft is connected to the corresponding external profile (polygon) via a sintered hub. The one-part design of the rotor also has a smaller moment of inertia. This ensures a quick start-up behavior and offers advantages at high engine speeds. The brakes are modular in design and are supplied pre-assembled. This installation requires only a few steps and can be automated completely.