09.10.830-444U KEB
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The KEB 09.10.830-444U is part of the Combibox Clutch Brakes series and provides a rated clutch and brake torque of 65 Nm. This unit has a maximum speed of 3000 rpm and features a brake power of 28 W and a clutch power of 35 W. The armature inertia is 23.08×10^-4 kg·m², and the rated air gap is 0.35 mm.
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Product Description:
The 09.10.830-444U is an electromagnetic clutch-brake produced by KEB in the Combibox Clutch Brakes series. It couples a motor shaft to a driven load and can stop or disengage motion by switching between its clutch and brake sections. In automated machinery, this dual-function module combines torque transmission and controlled deceleration in one housing, serving indexers, packaging stations, and material-handling axes that require rapid start-stop cycles.
The mechanical torque rating is 65 Nm, and it applies to both clutch and brake operation. During continuous rotation, the assembly may be driven at up to 3000 rpm, so the unit can operate with standard four-pole induction motors without exceeding its speed limit. A preset air gap of 0.35 mm separates the rotor and armature; magnetic attraction closes this gap when the coil is energized, allowing torque transmission. Armature inertia is 23.08 × 10⁻⁴ kg·m², while rotor inertia is 23.29 × 10⁻⁴ kg·m², indicating the momentary acceleration load presented to the motor. Heat generated during engagement is limited by a clutch friction power of 228 J/s, helping keep the friction surfaces within their permitted operating temperature during rapid cycling.
On the brake side, the permitted friction loss is 164 J/s, and the coil draws 28 W to maintain braking force. Individual engagement events may absorb up to 7.5 × 10³ J of friction work before cooling is required, while the cumulative service life of both clutch and brake linings is rated at 40.9 × 10⁶ J of wear work. When the running clearance increases to 0.7 mm, the housing slots permit adjustment to restore the proper magnetic pull and torque transfer. The dedicated clutch coil consumes 35 W during operation, allowing its electrical load to be considered when sizing the machine power supply.
