TJ2-200/100 Electromagnetic Drum Brakes For Mechanical Braking Of Lifting

 

 

💡 Key Features & Characteristics

Fail-Safe "Normally Closed" Operation:

Power-to-Release, Spring-to-Brake: When the equipment is running, the electromagnet is energized, pulling the armature to compress the main spring and release the brake shoes (open the brake). When the power is cut (during a stop or a power outage), the electromagnet de-energizes, and the strong spring force instantly pushes the brake shoes against the drum to stop and hold the load.

Safety First: This fail-safe design is critical for lifting machinery, as it automatically prevents the load from dropping or "coasting" in the event of an unexpected power failure.

High-Performance Specifications (TJ2-200/100):

Braking Torque: Delivers a rated braking torque of 40 N·m (at a 25% or 40% duty cycle), which can be precisely adjusted by changing the compression length of the main spring.

Brake Shoe Clearance: The standard clearance (退距) between the brake shoes and the drum is 0.4 to 0.6 mm, ensuring a fast and responsive braking action.

Power Supply: Operates on a standard AC 380V / 50Hz three-phase power supply.

Robust & Maintenance-Friendly Design:

Simple Structure: Built with a sturdy steel lever system, brake shoes, and a replaceable asbestos or non-asbestos friction lining (brake band) riveted to the shoes, making it highly durable and easy to repair.

Easy Adjustment: The braking torque and shoe clearance can be manually adjusted using nuts on the main spring and push rods, allowing for precise calibration based on the machinery's load requirements.

High-Speed Installation: Typically installed on the high-speed shaft (such as the motor shaft) of the transmission system. This allows for the use of a smaller, more compact brake since the torque on the high-speed shaft is minimal.

Environmental Adaptability:

Designed to operate reliably in ambient temperatures ranging from -20°C to +50°C, at altitudes up to 2500m, and in environments with relative humidity up to 90%.

🏭 Typical Applications

The TJ2-200/100 is a staple in various heavy industrial sectors:

Lifting Machinery: Cranes, hoists, winches, and卷扬机 (capstans) for controlling descent speed and parking.

Transport Equipment: Conveyors and mining carts requiring frequent and reliable stops.

General Industrial Drives: Any machinery that requires rapid starts, frequent operations, and secure mechanical holding.

📋 General Technical Specifications

表格

Parameter	Description
Type	AC Electromagnetic Drum (Block) Brake
Model Series	TJ2 Series
Model Variant	TJ2-200/100
Brake Wheel Diameter	200 mm
Matched Electromagnet	MZD1-100 (AC Single-phase)
Braking Torque	40 N·m (at 25%/40% duty cycle)
Brake Shoe Clearance	0.4 - 0.6 mm
Braking Principle	Electromagnet-released, Spring-applied (Normally Closed)
Ambient Temperature	-20°C to +50°C
Key Features	Simple structure, fail-safe design, adjustable torque

Note: The TJ2-200/100 is a highly reliable and standardized braking component. Because it is a "normally closed" brake, regular inspection of the brake shoe clearance (maintaining the 0.4-0.6 mm gap) and the thickness of the friction lining is essential. Worn linings or incorrect clearance can significantly reduce braking efficiency and safety. Always ensure the matched MZD1-100 electromagnet is powered by the correct voltage to guarantee smooth and instant release during operation.

 

 

 

 

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