YW-L500/E201 Series Electro-Hydraulic Drum Brake

The YW-L500/E201 is a specific model within the YW-L Series of Electric Hydraulic Drum Brakes. This brake is designed for heavy-duty industrial applications, combining a robust frame size with a powerful drive mechanism.

Here is a detailed breakdown of the YW-L500/E201 based on the available technical specifications and industry standards:

1. Product Overview

The YW-L series is known for its compact design and high performance, often used as an alternative to YWZ4, YWZ8, or YWZ9 series brakes where installation space is limited.2

Model Decoding:

YW-L: Series designation (Electric Hydraulic Drum Brake).

500: Frame size, indicating the approximate diameter of the brake wheel it fits (500 mm).

E201: Drive mechanism code, specifying the use of an Ed201 series electric hydraulic thruster.

2. Key Technical Specifications

 

Parameter	Specification	Notes
Brake Wheel Diameter	500 mm	Standard drum size for the "500" frame.
Drive Unit	Ed201	Electro-hydraulic thruster (Typically Ed201/6).
Rated Thrust	2000 N	Force generated by the Ed201 pusher.
Stroke	60 mm	Standard stroke for the "/6" variant.
Power Supply	380V, 50Hz	Standard 3-phase AC power (others available).
Standard	JB/T6406-2006	Conforms to Chinese mechanical industry standards.

3. Key Features

Compact Design: The YW-L series is engineered for situations where the YWZ4, YWZ8, or YWZ9 forms cannot be installed due to space constraints.

Ed201 Thruster Drive: Utilizes the Ed201 pusher, which provides a strong, reliable linear force to release the brake springs. This thruster features an asynchronous motor design, eliminating the need for starting capacitors and gear maintenance.

Automatic Equal Clearance (Interlocking): Features a linkage-type equal retreat device. This ensures that the gap between the brake shoes and the drum remains equal on both sides automatically, preventing uneven wear and "dragging".

Plug-in Brake Lining: The friction linings use a clip-in (insertion) design. This allows for very fast replacement without removing the brake from the shaft.

Self-Lubricating Hinges: All major pivot points are fitted with self-lubricating bearings, reducing maintenance requirements and ensuring smooth operation in dusty environments.

Wear Compensation: Can be equipped with a brake lining wear automatic compensation device. This maintains a constant brake torque and air gap as the linings wear down over time.

4. Typical Applications

The YW-L500/E201 is used in heavy industry where high reliability and frequent braking are required:

Cranes & Hoists: Bridge cranes, gantry cranes (for hoisting and traveling mechanisms).

Mining & Minerals: Braking for large belt conveyors, crushers, and hoists.

Metallurgy: Rolling mills, ladle rotators, and blast furnace equipment.

Port Machinery: Ship unloaders and container handlers.

5. Operation & Maintenance Tips

Hydraulic Oil: The Ed201 thruster requires DB-25 hydraulic oil. In cold climates (below -20°C), switch to YH-10 aviation hydraulic oil.

Heater: For outdoor use in freezing conditions, ensure the Ed201 thruster is equipped with a built-in heater.

Manual Release: The brake can be equipped with a manual release lever for maintenance or manual operation. Always ensure the system is depressurized before manual operation.

Limit Switches: Can be fitted with open/close limit switches to provide feedback to the control system, confirming the brake status (released or applied).

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