YWZ4-150/25 (YT1) Electro-hydraulic Drum Brakes

YWZ4-150/25 (YT1) Electro-hydraulic drum brakes

The YWZ4-150/25 is a medium-duty Electro-Hydraulic Drum Brake. It is a spring-set, hydraulically released braking system widely used in industrial machinery. The "(YT1)" designation indicates that this specific unit is equipped with a YT1 Series Electro-Hydraulic Thruster as its actuator, rather than the Ed series often found on standard YWZ4 models.

The model number breakdown is as follows:

YWZ4: The series designation for the brake frame (compliant with standards like JB/T6406-2006).

150: The Brake Wheel Diameter of 150 mm.

25: The Thrust/Stroke designation of the actuator. In this context, it corresponds to the YT1-25Z/4 thruster (250N thrust).

💡 Key Features & Characteristics

Actuator (YT1 Series):

Type: The YT1-25Z/4 is a standard electro-hydraulic push rod. It integrates the motor, centrifugal pump, and oil cylinder.

Operation: When energized, the motor drives the impeller to create hydraulic pressure, pushing the rod up to compress the brake spring and release the brake. When power is cut, the spring force pushes the rod down, applying the brake.

Thrust: Generates approx. 250 N of force.

Stroke: 40 mm (Standard for YT1-25).

Maintenance-Free Linkage:
The YWZ4 series features self-lubricating bearings at all main pivot points. This design eliminates the need for manual greasing, reduces wear, and ensures smooth, consistent operation.

Interlocking Equalizing Mechanism:
The brake includes a mechanical linkage that ensures both brake shoes (pads) retract and apply equally. This prevents the brake shoe from dragging on one side, which reduces uneven wear and heat generation.

Visual Torque Adjustment:
The main compression spring is housed in a square tube with a graduated scale. This allows operators to easily read and adjust the braking torque (spring force) without needing complex tools or calculations.

Easy Pad Replacement:
The brake shoes utilize a card-mounted (snap-in) structure. This allows for quick replacement of worn friction pads without disassembling the brake arm or using special tools.

🏭 Typical Applications

The YWZ4-150/25 is suitable for medium-duty applications requiring reliable deceleration or holding:

Cranes & Hoists: Small to medium overhead cranes and winches.

Conveyors: Belt conveyors for material handling.

Metallurgy & Mining: General machinery braking systems.

Port Machinery: Light-duty装卸 (loading/unloading) equipment.

📋 General Technical Specifications

Note: While the YWZ4 series is often paired with Ed series thrusters (e.g., Ed23/5), the YWZ4-150/25 (YT1) specifically uses the YT1-25Z/4. These two thruster types (Ed vs. YT1) have different mounting dimensions and electrical characteristics. When replacing the thruster, ensure you purchase the YT1-25Z/4 model to match the existing brake frame connections.

Hot Tags: ywz4-150/25 (yt1) electro-hydraulic drum brakes, China, manufacturers, supplier, factory, customized