Showing Slide 1 of 6

WL11039 Power-Off Brake System

A power-off brake is a spring-applied, electrically released braking device used in industrial and automation equipment to ensure safety during power failure. When power is applied, the electromagnetic coil generates magnetic force that releases the brake, allowing normal motor operation. When power is interrupted, the internal springs automatically engage the friction plates to stop or hold the rotating shaft. This fail-safe principle prevents uncontrolled movement and protects both operators and equipment. Power-off brakes are compact, easy to integrate with motors or gear reducers, and provide stable torque output.

Power-off brakes feature a fail-safe spring-applied design that automatically engages during power loss. They provide stable and consistent braking torque with rapid response times. Compact modular construction allows direct integration with motor shaft ends or gear reducers. Durable, asbestos-free friction plates ensure long service life and environmental compliance. IP-rated housings protect against dust and moisture. Low power consumption and simple electrical control make installation straightforward. Optional manual release mechanisms support maintenance operations. High reliability under frequent start-stop cycles ensures suitability for automation systems, CNC machinery, packaging lines, hoists, and conveyors requiring precision stopping and load-holding performance.

Get A Free Quote

PDF Download

Industrial Fail-Safe Brake System

Product Overview

Strong Adaptability

This brake features modular design, which allows the brake to be directly installed on the end of the motor or reducer shaft. This facilitates rapid installation, maintenance, and flexible integration in different applications.

Excellent Performance

This brake features rapid power-off braking response time of ≤ 0.2 seconds, ensuring the stability of the braking torque during operation. This facilitates efficient production and high product yields.

Durable and Safe

This brake is designed with asbestos-free wear-resistant friction plates, ensuring the longevity of the brake and environmentally friendly use. The IP54 protection level of the brake allows it to function in dusty and humid conditions. The over-temperature protection function further adds to the safety of the brake during operation.

Industrial Safety Brake for Motors

High Performance Power-Off Brake

Durable Motor Power-Off Brake

Automation Power-Off Brake Solution

Power-off brakes are widely used across industrial sectors where safety and controlled stopping are critical. In automated production lines, they ensure precise positioning and emergency stopping of motors driving conveyors, packaging machines, and robotic systems. In hoisting equipment and cranes, power-off brakes securely hold suspended loads during power interruptions, preventing dangerous drops. Elevator and lift systems rely on fail-safe brakes to guarantee passenger safety during electrical failures. CNC machines use power-off brakes to maintain axis positioning accuracy and prevent tool damage.

In the renewable energy sector, wind turbines use power-off brakes to stop rotor movement during maintenance or emergency shutdown. In warehousing and logistics, automated guided vehicles (AGVs) and stacker cranes integrate compact power-off brakes for reliable motion control. Textile, printing, and food processing machinery also use these brakes to maintain operational safety and precision.

Precision Stopping Power-Off Brake

Advantages

Power-off brakes provide fail-safe protection by automatically engaging when power is lost. This greatly enhances operational safety. They offer stable torque output and fast response times, ensuring precise stopping. The compact design allows easy integration with motors and gear reducers. Low maintenance requirements and durable friction materials reduce long-term operational costs. Their simple control system makes them easy to install and operate. High reliability under frequent start-stop cycles supports automation applications.

Disadvantages

Power-off brakes generate heat during frequent braking cycles, requiring proper thermal design. Friction components wear over time and must be periodically inspected and replaced. Initial torque calculation errors may cause insufficient braking performance. Noise may occur during engagement in some models. Compared to permanent magnet brakes, power-off brakes require continuous power to remain released, leading to minor energy consumption during operation.

Industrial Safety Brake for Motors

Q1: Is a power-off brake fail-safe?

Yes, it automatically engages when power is removed.

Q2: Can it hold vertical loads?

Yes, if torque is properly calculated.

Q3: What voltage options are available?

Common options include 24VDC, 48VDC, 110VAC, 220VAC.

Q4: How long does it last?

Depends on duty cycle and maintenance.

Only periodic inspection of friction plates.

How to Select a Power-Off Brake.

Selecting the correct power-off brake requires systematic evaluation of mechanical, electrical, and environmental parameters. First, determine the required braking torque. Calculate the maximum load torque based on motor power, speed, and transmission ratio. Apply a safety factor of at least 1.5 to 2 times to ensure reliable holding capacity, especially in vertical load applications such as hoists or elevators.

Second, verify shaft diameter and mounting configuration. The brake hub must match the motor shaft size and keyway standard. Ensure available installation space is sufficient for brake thickness and ventilation. For compact equipment, consider slim-type designs.

Third, confirm electrical specifications. Select the appropriate voltage (24VDC, 48VDC, 110VAC, 220VAC) according to the control system. Check coil power consumption and compatibility with PLC or driver outputs. For energy-sensitive systems, low-power coil versions are recommended.

Fourth, evaluate duty cycle and thermal performance. Applications with frequent braking cycles require higher heat dissipation capacity and durable friction materials. Request torque curves and temperature rise data from the manufacturer.

Fifth, consider environmental conditions. For dusty or humid areas, choose IP54 or higher protection ratings. In corrosive environments, select coated or stainless steel housing options.

Sixth, review safety standards and certifications if required by industry regulations. Ensure the brake meets local compliance standards.

Finally, assess supplier reliability, production capability, and technical support. A qualified manufacturer should provide engineering assistance, customization options, and after-sales service. Careful selection ensures long service life, operational safety, and optimized equipment performance.

✅ Our Company Advantages
1️⃣ Who Are We?
We are a professional manufacturer of electromagnetic solutions, located in Dongguan, China, and established in 2007. With over 20 years of experience, we are serving customers all over the world, including:
• Domestic Market (30%)
• Eastern Europe (13%)
• Western Europe (10%)
• Oceania (10%)
• North America (10%)
• Southern Europe (10%)
• Eastern Asia (8%)
• South America (5%)
• Southeast Asia (4%)
We have 201~300 professionals working in our company.
________________________________________
2️⃣ How Can Weilong Guarantee Quality?
Weilong guarantees quality through our rigorous quality control processes, which ensure every product meets international quality standards:
✔ Product specifications
✔ Pre-production samples before mass production
✔ Full inspection before shipment
✔ Advanced testing laboratory facilities
✔ Professional testing equipment
✔ Safety and reliability
Weilong strives to provide high-quality products with consistent performance, which can be depended upon.
________________________________________
3️⃣ What Can You Buy From Us?
We specialize in electromagnetic and mechanical transmission components. Our products include:
• DC Solenoids
• Solenoid Linear Actuators
• Solenoid Valves
• Inductor Coils
• Electromagnetic Brake & Clutch
• Shaft Couplings
• Shaft Locking Devices
• Gears
• Timing Belt Pulleys
We offer OEM and customization solutions that fit your application requirements.
________________________________________
4️⃣ Why Choose Us Instead of Other Suppliers?
✔ 20+ Years of Professional Experience
We have rich technical expertise in electromagnetic and motion control components.
✔ Strong R&D and Testing Capability
We have a mature technical team and advanced testing equipment to continuously improve product innovation and quality.
✔ Reliable Testing Equipment
Our products are tested to ensure durability, safety, and high efficiency.
✔ Complete Production System
Our integrated production workshop ensures faster delivery and stable supply capacity.
✔ In-House Tooling Workshop
We have our own metal and plastic tooling workshops to improve customization speed and cost control.
✔ Professional Laboratory Testing
We have a professional laboratory to conduct full testing for customers according to their requirements.