Product Description:

The 08.10.670.4009 is an electromagnetic clutch-brake assembly produced by KEB within the Combibox Clutch Brakes series. It combines a dry-running clutch with a spring-applied brake, allowing one compact unit to couple rotating machinery and bring it to rest whenever power is removed. In automated conveyors, indexing drives, and light-duty presses, it lets control systems engage motion quickly and then secure the load without relying on external hydraulics or pneumatics.

During operation, the brake section delivers a holding and stopping moment of 30 Nm while drawing only 21 W at 20 °C, which helps keep temperature rise moderate for cabinet installations. The clutch side engages with 28 W coil power and shares the same 30 Nm torque rating, which simplifies load calculations. The highest permissible shaft speed is 3000 rpm before lining wear accelerates. The factory-set air gap is 0.35 mm, and maintaining this clearance supports repeatable magnetic pull-in as friction material wears. Input and output flanges follow the IEC B5 patterns (2) and (1) respectively, so the unit can be face-mounted to standard motors and gearboxes. Because the housing has no mounting feet, it is typically bolted directly to the adjacent frame.

Energy and inertia values describe the unit’s dynamic behavior during repeated starts and stops. The armature contributes only 8.59e-4 kg·m², and the rotor adds 7.78e-4 kg·m², so the assembly can support fast cyclic acceleration with modest drive power. Each individual engagement may absorb up to 4.8 kJ, and over its service life the clutch section tolerates 25.3 MJ of friction work before reaching a 0.1 mm wear depth. When the initial gap grows toward the 0.70 mm readjustment limit, correct clearance can be restored by shifting the magnet body. Low inertia helps maintain predictable acceleration during repetitive indexing tasks.