ZWZB-500/500 Series Electromagnetic Drum Brakes

the ZWZB-500/500 Series Electromagnetic Drum Brake is a specific type of DC (Direct Current) electromagnetic brake designed for heavy-duty industrial applications.

It is essentially an updated or standardized version of older ZWZ series products, designed to meet GB (Chinese National) standards.

Here is a detailed overview of this specific model based on the available technical data:

🔧 What is the ZWZB-500/500?

The ZWZB-500/500 is a DC Electromagnetic Drum Brake. Unlike the AC MW series you looked at earlier, this series typically operates on a DC 220V power supply.

Model Meaning:

ZWZ: Electromagnetic Drum Brake.

B: Indicates the specific series variant (often signifying compliance with GB standards or an improved design).

500/500: Generally refers to the diameter of the brake wheel (500mm) and the rated thrust or specific frame size.

📋 Key Specifications & Features

Based on the characteristics of the ZWZB series and the specific 500/500 size, here are the core specifications:

表格

Parameter	Specification	Notes
Model Series	ZWZB-500/500	Replaces older ZWZ3/ZWZ3A series.
Power Supply	DC 220V	Note: Some specific configurations may vary; always check the nameplate.
Brake Wheel Diameter	500 mm	Large diameter for high torque applications.
Standard Compliance	GB (National Standard)	Connection dimensions follow GB standards.
Primary Use	Heavy Industry	Metallurgy, ports, large cranes.

✨ Distinctive Features

Compared to older models, the ZWZB series (including the 500/500) incorporates several design improvements:

Self-Lubricating Hinges: The main moving pivot points use self-lubricating bushings. This reduces maintenance needs and ensures smooth operation even in dusty environments.

Equal Clearance Mechanism: It features a special "interlock-type" device that automatically keeps the gap between the brake shoes and the drum equal on both sides. This prevents one-sided wear and ensures the brake releases fully.

Tool-Free Lining Replacement: The brake linings are designed as a "card-type" integrated structure. When the friction material wears out, you can replace it quickly without disassembling the entire brake mechanism.

Durable Friction Material: It supports various lining materials, including semi-metallic (asbestos-free), hard, and soft composites, allowing you to choose the best material for your specific load and temperature conditions.

🏭 Typical Applications

This is a large, heavy-duty brake. You will typically find it installed on:

Metallurgical Equipment: Rolling mills, continuous casting machines (where high temperatures and heavy loads are present).

Large Port Cranes: For hoisting and luffing mechanisms that require high braking torque.

Heavy Construction Machinery: Large mixers or conveyors.

💡 Usage Environment

To ensure safety and longevity, the ZWZB-500/500 should be used under the following conditions:

Temperature: -25°C to +40°C.

Altitude: Below 2000 meters.

Environment: The area should be free of explosive gases, corrosive chemicals, and excessive conductive dust.

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