Product Description:

KEB supplies the 05.P1.320-0457, a safety brake module within the P1 Encoders and Brakes series. This electromagnetic unit attaches to motor shafts in automated machinery to hold the load securely whenever drive power is absent and to free the axis when the controller energizes the release coil. Its role is to prevent uncontrolled motion during maintenance, emergency stops, or on gravity-assisted axes.

The brake is rated for a 100% duty time, allowing the coil to remain powered continuously without overheating during frequent cycling. It is permanent-magnet engaged, so holding torque is produced by magnetic attraction until an electromagnetic release pulse lifts the armature. Protection is provided by an IP20 housing that blocks finger contact but requires installation in a ventilated panel. The friction faces operate in air, and this dry operation removes the need for oil or grease film management in clean production areas. A back-mounted configuration fixes the brake to the rear of the motor, minimizing additional stack length. To suit compact assemblies, the body is supplied without a flange, and torque is transmitted through an internal hub keyed directly to the shaft.

Correct installation centers on air-gap and alignment tolerances. The factory setting establishes a 0.2 mm gap between magnet and armature; this distance yields rapid response while avoiding drag. Through wear, the clearance may grow, but the gap must never exceed 0.5 mm or magnetic force will drop. Radial displacement is also controlled: the magnet face may shift no more than 0.1 mm relative to the armature, and shaft eccentricity toward the magnet is limited to 0.05 mm. Observing these limits keeps flux distribution uniform, prevents edge loading, and maintains repeatable release times throughout the product's service life.