Product Description:

The 03.P1.100-0877 is an electromagnetic safety brake produced by KEB within the P1 Encoders and Brakes series. It is intended for mounting on servo or induction motors where it provides controlled stopping and static holding in automated machinery. By applying spring force and releasing when energized, the brake prevents unwanted shaft rotation during power-off conditions and supports accurate positioning tasks in assembly lines, packaging equipment, and handling systems. This operating principle also suits axes that must remain stationary after a stop command or during an unexpected loss of drive power.

The brake develops a nominal torque of 2.7 Nm. At 120 °C, its static holding capability is rated at 1.8 Nm. A round flange simplifies alignment, and the hub can be machined up to 12 mm in bore to match common motor shafts. The friction faces must be set with a minimum air gap of 0.15 mm, and wear is allowable until the clearance reaches 0.4 mm at 20 °C. With a continuous duty cycle of 100%, the coil absorbs only 11 W, which helps limit heat buildup during repeated actuation. The brake also tolerates shaft speeds up to 10000 rpm while disengaged, so it can be used on motors that run at high speed between stopping events.

During dynamic stops, braking action is limited to 6000 rpm to help preserve lining life and keep torque output consistent. At an elevated winding temperature of 120 °C, the maximum permissible air gap is reduced to 0.35 mm, so wear must remain within that limit. Electrical release is quick: current build-up produces armature movement in less than 3 ms, and the armature separates fully within 40 ms. This short release behavior supports motion sequences where the shaft must resume rotation with minimal delay after the brake is energized.