Product Description:

The 03.P1.120-0667 is a flange-mounted brake produced by KEB for the P1 Encoders and Brakes series. It is used in industrial automation to hold or stop rotating shafts when power is removed, helping maintain position in motion systems that rely on controlled deceleration and secure standstill. In packaging, indexing, and other automated machinery, this type of brake helps prevent unwanted shaft movement after drive power is switched off. It can also support repeatable stopping behavior when an axis must remain fixed between cycles.

This model works with a nominal air gap of 0.15 mm, which gives the magnetic circuit enough clearance to generate clamping force without contact during normal wear. A direct-current coil rated for DC power disengages the brake without the vibration associated with alternating fields. Because it is built for continuous operation, the friction faces support a duty cycle of 100% without thermal derating. The release circuit uses an Electromagnetic design, while engagement is produced through a Permanent Magnet path. This magnetic arrangement removes the need for spring engagement parts and keeps the actuation method simple. The unit mounts to a round flange, uses an internal hub keyed to the shaft, operates dry, and maintains a shaft-to-magnet offset of 0.05 mm during assembly to limit axial load on adjacent bearings.

The brake has an IP20 enclosure, so it should be installed where dust and liquids are controlled by the surrounding machine or cabinet. It is better suited to protected indoor installations than to exposed mounting locations. Maximum allowable wear increases the working gap to 0.4 mm; beyond that point, residual torque drops and the brake requires adjustment. Magnetic alignment remains stable because the magnet-to-armature offset is kept to 0.1 mm, which helps reduce radial runout near encoder feedback components. With a mass of 0.3 kg, the assembly adds little inertial load to small servo axes while still providing holding capability.