SBD80-B Safety Brake

SBD80‑B is a normally‑closed, safety disc brake (also called fail‑safe brake), mainly used for high‑speed shaft braking, emergency stopping and load holding in hoists, elevators, cranes, conveyors and other mechanical transmission systems. It is a compact, high‑torque safety brake with reliable performance.

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Basic Identification

Model: SBD80‑B Series

Type: Safety disc brake / fail‑safe brake

Actuation: Spring applied, electromagnetically or hydraulically released

Structure: Normally closed, safety design

Function: Emergency braking, safety stopping, load holding

Key Parameters

Rated braking torque: 800 Nm

Suitable for high‑speed shaft applications

Compact structure, stable and durable

Working Principle

Brake state (power/control off):Built‑in compression springs automatically press the friction disc to produce braking force, ensuring safety when power is lost.

Release state (power/control on):Electromagnetic or hydraulic force overcomes spring pressure to release the brake, allowing the shaft to rotate.

Safety feature: Acts immediately in case of power failure or emergency stop.

Main Features

True fail‑safe safety design

High braking torque in compact size

Stable, reliable, low noise

Fast response, suitable for frequent operation

Asbestos‑free friction pads

Easy installation and adjustment

Long service life, low maintenance

Typical Applications

Hoists, winches, cranes

Elevators and lifting machinery

Conveyors and transmission systems

Construction and mining machinery

Any equipment requiring safety braking and emergency stopping

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Short version 

SBD80‑B series safety brakes are normally‑closed, fail‑safe disc brakes with 800 Nm rated torque, used for emergency stopping and safety holding in hoisting, elevator and transmission machinery.

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