BFK458-20-R Intorq BFK458 Size 20 Brake Rotor (396280)

The Intorq BFK458 Brake Rotor is a component of the BFK458 spring-applied, electrically released brake system, designed for dry-running industrial braking and holding applications. It transmits braking torque from the stator assembly to the shaft via an axially toothed hub as part of the complete brake module.​

Product overview

• The rotor is a rotary brake disc fitted with friction linings on both sides, operating between the armature plate and counter-friction surface of the BFK458 brake.​
• In the de-energised (fail-safe) state of the brake, the rotor is clamped by compression springs to provide the specified braking torque.​

Design and construction

• The rotor is manufactured as an aluminium body with a toothed intermediate ring, providing low-wear friction lining and low-wear gear teeth in the long-life versions.​
• It is designed for low-backlash torque transmission in combination with the corresponding hub, supporting accurate positioning in drive systems.​

Operating characteristics

• The rotor is intended for dry-running operation within the BFK458 system and contributes to achieving the rated brake torque after a short run‑in period.​
• The friction linings are asbestos-free and dimensioned to allow multiple readjustments of the brake air gap over the service life.​

Typical applications

• Used as part of BFK458 brake assemblies on electric motors and drives in conveyors, hoists, machine tools, and general automation equipment requiring reliable holding and emergency braking.​
• Suitable for service braking with frequent switching cycles when used within the specified thermal and wear limits of the complete brake system.​