Product Description:

The 09.09.670-4000 is an electromagnetic clutch-brake unit produced by KEB for the Combibox Clutch Brakes series. Designed for inline mounting between a driving shaft and a driven load, the module couples or decouples torque on command and provides controlled stopping for industrial actuators, conveyors, and positioning tables. By combining a clutch and brake in one housing, it reduces the need for separate components in machine drive trains. Because both functions are integrated into one assembly, axial installation space can be reduced compared with separate devices mounted in series. This layout is useful where motion must start, stop, or hold with repeatable timing during automated cycles.

The unit transmits up to 65 Nm when the clutch is engaged, and it can rotate at 3000 rpm without exceeding centrifugal limits. Coil excitation requires 35 W, which helps limit heat buildup in compact installations. Under nominal voltage, the armature closes the 0.35 mm air gap in about 200 ms, and disengagement takes about 40 ms. The clutch delay is 50 ms, so the response remains predictable in timed motion sequences. Mechanical connection uses a Bore-In hub on the input side and a shaft output on the driven end, allowing installation on standard keyed shafts. Periodic readjustment is permitted up to 0.7 mm to compensate for wear, and the friction linings are sized for 7.5 × 10³ J of cumulative work per cycle group.

Thermal loading is limited to 228 J/s of frictional power, so continuous-duty operation has to stay within that value to avoid excessive lining temperature. Dynamic behavior is also affected by the rotating masses, with the armature contributing 12.61 × 10⁻⁴ kg·m² and the rotor adding 23.29 × 10⁻⁴ kg·m². These inertias influence how quickly the assembly can accelerate, decelerate, and settle after engagement or braking. The Bore-In input and shaft output arrangement help maintain alignment during repeated cycling, while the wear adjustment range allows the unit to keep consistent actuation over time. In applications with frequent cycling, the response times and thermal limit should be considered together when setting braking intervals and dwell periods.