Product Description:

The 08.10.670-4EGU is a combined electromagnetic clutch and brake manufactured by KEB for the Combibox Clutch Brakes series. Built in a bore-in/shaft-out design, the unit is mounted between a driven pulley and an output shaft so that machinery can accelerate, hold, or index with one compact assembly. During operation, the clutch side transfers torque to bring a load up to speed, while the brake section stops motion within the same housing, simplifying installation in automated presses, feeders, and packaging drives where rapid start-stop cycles are required.

The clutch portion develops a rated torque of 30 Nm at the nominal air gap and draws only 28 W from the control supply. Thermal limits are set by a maximum clutch friction power of 161 J/s and a friction work capacity of 25.3 × 10⁶ J over 0.1 mm of wear, allowing high-energy engagement without premature lining degradation. Its steel rotor carries 7.78 × 10⁻⁴ kg·m² of inertia, while the armature contributes 8.59 × 10⁻⁴ kg·m², and these low values help minimize response time when the clutch is energized. Engagement clearance is preset to a rated air gap of 0.35 mm, and the mechanism can be readjusted up to 0.7 mm to offset wear before replacement is needed.

On the braking side, the module draws 21 W while supplying holding torque. Heat dissipation is limited to 114 J/s, and allowable single-event energy is capped at 4.8 × 10³ J, matching the clutch so shared friction surfaces remain within their intended load range. The brake friction work rating matches the clutch rating, which helps keep service life balanced between both functions. System speed must not exceed 3000 rpm; within this ceiling, the common rotor handles the combined stresses of acceleration, deceleration, and dwell without exceeding mechanical or thermal limits.