YWZ9-710/E301 Series Electro-hydraulic Drum Brakes

The YWZ9-710/E301 Series Electro-hydraulic drum brakes are heavy-duty industrial brakes designed for reliable stopping and holding of machinery. Here is a description of their characteristics:

Operating Principle:

This series operates on a fail-safe, spring-applied​ principle. It uses an electro-hydraulic thruster (E301 model)​ as the actuator. When electrically powered, the thruster generates hydraulic pressure to retract the brake springs and release the brake. When power is cut off, the stored spring force automatically engages the brake shoes against the drum, ensuring safety in the event of a power loss.

Key Features:

Model Designation:​ "YWZ9" indicates the brake series, "710" typically signifies the rated braking torque (e.g., 710 Nm), and "E301" specifies the model of the integrated electro-hydraulic thruster.

High Torque:​ The 710 Nm rating makes it suitable for applications requiring substantial braking force.

Electro-hydraulic Thrusters (E301):​ Provides smooth, cushioned actuation, reducing mechanical shock and noise during engagement and release. It combines electric control with hydraulic power transmission.

Automatic Wear Adjustment:​ Many versions include an automatic mechanism to compensate for lining wear, maintaining optimal brake gap and consistent performance without manual intervention.

Durable Construction:​ Built with robust materials like cast iron or steel for the brake shoes, lever, and housing to withstand demanding industrial environments.

Reliable Holding:​ The spring-applied design ensures the brake remains securely engaged when the machinery is stationary or during a power outage.

Typical Applications:

These brakes are commonly used on:

Travel and trolley drives of overhead cranes and gantry cranes.

Winches, hoists, and slewing mechanisms.

Conveyor systems, mining equipment, and other heavy machinery requiring controlled deceleration and safe positioning.

In summary, the YWZ9-710/E301 is a robust, fail-safe braking system that delivers reliable performance for industrial drives, leveraging the smooth power of an electro-hydraulic thruster for controlled operation.

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