YW-L400/E80 Electro-Hydraulic Drum Brake

YW-L400/E80 Electro-Hydraulic Drum Brake

The YW-L400/E80 is a compact, high-performance Electro-Hydraulic Drum Brake from the YW-L series. It is specifically designed for applications where installation space is limited, serving as a modern alternative to bulkier brake series like the YWZ4, YWZ8, or YWZ9.

The model number breakdown is as follows:

YW-L: The series designation. The "L" typically denotes a Compact or Lightweight design optimized for high frequency and space-saving.

400: The Brake Wheel Diameter of 400 mm.

E80: The specific Thruster Model (equivalent to Ed80/6). This indicates a thrust force of 800 N (approx. 80 kgf).

💡 Key Features & Characteristics

Space-Saving Design:
The primary advantage of the YW-L series is its compact footprint. It is engineered to fit into tight spaces where larger, traditional drum brakes (like the YWZ series) cannot be easily mounted.

Maintenance-Free Operation:

Self-Lubricating Bearings: All main pivot points (hinges) are equipped with self-lubricating bearings. This eliminates the need for manual greasing, reduces maintenance costs, and prevents wear at the pivot points.

Sealed Thruster: The E80 (Ed80/6) thruster is a sealed unit, protecting the internal hydraulic mechanism from dust and moisture.

Automatic Compensation & Equalization:

Interlocking Equalizing Device: The brake features a mechanical linkage that ensures both brake shoes retract and apply equally. This prevents one shoe from dragging against the drum (floating贴), which reduces heat and uneven wear.

Automatic Wear Compensation: Many YW-L units are equipped with an automatic compensation device that adjusts the brake shoe clearance as the friction pads wear down, maintaining consistent braking performance without manual intervention.

Visual Torque Adjustment:
The main compression spring is housed in a tube with a graduated scale, allowing operators to easily read and adjust the braking torque to match the application requirements.

Snap-In Brake Pads:
The friction pads (shoes) use a card-mounted (snap-in) structure. This allows for quick and easy replacement of worn pads without the need for special tools or disassembling the brake arm.

🏭 Typical Applications

The YW-L400/E80 is widely used in industries requiring reliable braking in compact spaces:

Port & Terminal Machinery: Ship-to-shore cranes, rubber-tired gantry cranes (RTGs).

Metallurgy: Steel mills and rolling mills where space is constrained.

Mining: Conveyors and hoists.

Construction: Tower cranes and building material lifts.

General Machinery: Any mechanical drive device requiring deceleration or parking braking.

📋 General Technical Specifications

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Note: The YW-L series is often used as a direct replacement for older YWZ series brakes when space is an issue. However, mounting dimensions can vary slightly between series. When replacing a brake, always verify the mounting bolt pattern and shaft height to ensure it fits your existing base. The E80 thruster is a standard industrial component, making replacements easy to source.

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