Advantages and Usage of TJ2-200/100 Electromagnetic Drum Brake

The TJ2-200/100 is a medium-duty electromagnetic drum brake from the TJ2 series, featuring a 200 mm drum diameter and 100 mm drum width. It adopts an electromagnetic drive + normally closed safety design, integrating reliable braking performance, compact structure, and easy operation. Below is a detailed introduction to its core advantages, application scenarios, and usage notes:

1. Core Advantages

1.1 Responsive & Stable Braking Performance

Adopts an electromagnetic attraction drive mode-when energized, the electromagnet quickly generates magnetic force to attract the armature, releasing the brake; when de-energized, the high-tension brake spring rebounds instantly to clamp the drum. The braking response time is ≤0.3 seconds, enabling rapid stop in emergencies to avoid equipment runaway. Equipped with an asbestos-free resin-based friction lining (friction coefficient μ ≥ 0.42), it maintains stable torque output (-20°C to 60°C) and is insensitive to mild moisture or dust, ensuring consistent braking in general industrial environments.

1.2 Simple Structure & Easy Installation

Integrates the electromagnet, brake body, and lever mechanism into a compact modular design (net weight ≈35 kg), with a small footprint that saves installation space. The standardized mounting interface complies with industry standards, allowing direct connection to equipment shafts without complex adjustments. No independent air source or hydraulic system is required-only a matching AC/DC power supply is needed, reducing configuration costs and on-site integration difficulty.

1.3 Low Maintenance & Long Service Life

The brake lining adopts a clamped integral structure, which can be quickly replaced without disassembling the entire brake when worn. Main swing hinge points are equipped with self-lubricating bearings, requiring no additional lubrication during the service cycle. The electromagnet uses F-class insulation and a sealed housing (protection class IP54), effectively preventing dust and moisture intrusion, and has a service life of ≥12,000 working hours.

1.4 High Safety & Fail-Safe Design

Normally closed design ensures automatic braking when the power is cut off or the electromagnet malfunctions, providing fail-safe protection for equipment and loads. Optional limit switches (release/closing status) can be equipped to send interlock signals to the host PLC, enabling real-time monitoring of the brake's working state and avoiding misoperation hazards.

2. Application Scenarios & Usage Notes

2.1 Typical Application Scenarios

Light-to-Medium Load Hoisting Equipment: Suitable for small overhead cranes, electric hoists, and winches in workshops, warehouses, and logistics centers, ensuring stable positioning during workpiece lifting and transfer.

Conveyor & Material Handling Machinery: Brakes for light belt conveyors, chain conveyors, and small rail transfer carts, preventing material backflow or slipping when the equipment stops.

General Industrial Machinery: Braking systems for small fans, pumps, rotating platforms, and assembly line auxiliary equipment, enabling quick stop and locking to avoid idle rotation.

Automation & Light Industrial Equipment: Applied to the braking of automatic guided vehicles (AGVs), packaging machinery, and small processing equipment, adapting to high-frequency start-stop cycles.

2.2 Key Usage Notes

Power Supply Requirements: The standard rated voltage of the electromagnet is AC 380V/220V or DC 24V/110V (confirm the model's rated voltage before use). Ensure stable power supply-voltage fluctuations should not exceed ±10% to avoid affecting braking performance.

Environmental Limitations: Suitable for working environments with ambient temperature -20°C to 60°C and relative humidity ≤90%. Avoid use in flammable, explosive, or highly corrosive environments; select anti-corrosion modified products for outdoor use.

Daily Inspections: Regularly check the wear of the brake lining (replace when the remaining thickness ≤4 mm) and the tightness of mounting bolts. Verify that the electromagnet armature moves flexibly without jamming, and clean dust on the electromagnet surface to avoid overheating.

Long-Term Shutdown Handling: Before restarting after long-term shutdown, manually check the flexibility of the lever mechanism and the elasticity of the brake spring, and energize for pre-testing to ensure no jamming or delayed braking.

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