JZ-500 Electromagnetic Drum Brakes

JZ-500 electromagnetic drum brakes

The JZ-500 is a large-scale AC Electromagnetic Drum Brake (also known as a block brake). It is a "normally closed" braking system widely used in heavy industrial machinery for deceleration and parking (holding) braking. The "500" designation refers to the diameter of the brake wheel it is designed to clamp.

The model number breakdown is as follows:

JZ: The series designation for Energy-Saving Electromagnetic Block Brakes.

500: The Brake Wheel Diameter of 500 mm.

💡 Key Features & Characteristics

Electromagnetic Actuation (Normally Closed):Operation: The brake uses a spring-set, electric-release mechanism.

Braking (Power Off): When the power is cut, the main compression spring forces the brake shoes against the 500mm drum to stop or hold the load.

Releasing (Power On): When AC 380V power is applied, the electromagnetic thruster generates force to compress the spring and retract the shoes, allowing the machine to rotate.

Energy-Saving & Eco-Friendly:

Efficiency: The JZ series is designed for high action frequency and energy efficiency.

Friction Material: It typically comes equipped with environmentally friendly, asbestos-free brake linings (often semi-metallic or non-asbestos organic), ensuring compliance with modern safety and environmental standards.

Maintenance-Free Linkage:
The main pivot points (hinges) are equipped with self-lubricating bearings. This design eliminates the need for manual greasing, reduces wear on the linkage, and ensures smooth operation over long periods.

Quiet Operation:
The JZ series is engineered to provide smooth braking with low noise, reducing the acoustic impact in the workplace compared to older, noisier brake designs.

Easy Maintenance:

Snap-in Pads: The brake linings often use a card-mounted (snap-in) structure, allowing for quick replacement without disassembling the entire brake arm.

Lifting Hook: The unit typically features a built-in lifting hook, facilitating easy installation and maintenance using a crane or hoist.

🏭 Typical Applications

The JZ-500 is suitable for heavy-duty industrial applications requiring reliable braking on large drive shafts:

Port Machinery: Gantry cranes, ship-to-shore cranes, and port loaders.

Metallurgy: Steel rolling mills and heavy overhead cranes.

Mining: Large conveyors, ball mills, and hoists.

Construction: Tower cranes and heavy lifting equipment.

General Industry: Chemical and transportation machinery drive units.

📋 General Technical Specifications

表格

Note: The JZ-500 is a heavy unit (often weighing around 200 kg or more depending on the specific thruster matched to it). When installing, ensure the mounting base is rigid enough to handle the braking torque. The "Energy Saving" label usually implies it uses a more efficient solenoid design compared to older TJ2 series brakes. Always verify the specific thrust force required for your application, as the JZ-500 frame can be matched with different thrusters (e.g., Ed50, Ed80, Ed121) to achieve different torque levels.

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