YWZ4-800/D320 series are normally‑closed, electro‑hydraulically released industrial drum brakes, widely used for braking, stopping and load holding in cranes, hoists, metallurgical, mining and port machinery.
Basic Identification
Model: YWZ4-800/D320 series
Type: Electro‑hydraulic drum brake
Brake drum diameter: 800 mm
Matching actuator: D320 series electro‑hydraulic thruster
Structure: Normally closed, spring applied, hydraulic released
Working Principle
Power off → braking:Powerful built‑in springs press the brake shoes against the drum, providing stable braking torque.
Power on → release:The electro‑hydraulic thruster lifts the brake arms to release the brake.
Fail‑safe: Automatically brakes upon power failure or emergency.
Key Features
Stable braking torque, reliable performance
Compact structure, long service life
Asbestos‑free friction linings
Adjustable brake shoe clearance
Suitable for frequent starting and heavy‑duty operation
Easy installation and maintenance
Typical Applications
Bridge cranes, gantry cranes, hoists and winches
Metallurgical rolling mills and conveying equipment
Mining machinery and port handling systems
Various mechanical transmission systems requiring braking
