Electromagnetic Brake Assembly

Product Specifications

Technical details and manufacturing context for Electromagnetic Brake Assembly

Definition

An electromagnetic brake assembly is a component used in machinery to provide controlled deceleration, stopping, or holding of a rotating shaft or load. It operates by generating an electromagnetic field to engage a friction surface, converting kinetic energy into heat, and releases when the field is removed, allowing for rapid, precise, and wear-free operation without mechanical linkages. This assembly is typically part of a brake/drive unit and is selected based on application requirements such as torque, speed, and environmental conditions. Key parameters include braking torque (5–200 N·m), supply voltage (24 V DC ±10%), power consumption (15–60 W), response time (0.05–0.3 s), maximum speed (3000–6000 rpm), air gap (0.2–0.5 mm), coil insulation class (F–H per IEC 60085), operating temperature (-20 to 80 °C), protection rating (IP54–IP65 per IEC 60529), friction material (sintered or resin), and weight (2–15 kg). These values are reference ranges and must be verified for the specific model and application. The assembly is constructed from electrical steel for the coil core, copper wire for the coil, friction material (e.g., sintered metal or organic), and steel for the housing, armature, and rotor. Proper selection requires consideration of load, required deceleration, duty cycle, and environmental factors. Verification with the manufacturer or supplier is essential to confirm that the chosen unit meets the required specifications and standards. Maintenance signals include increased response time, reduced holding torque, or unusual noise, indicating wear or air gap misalignment. Failure boundaries include exceeding maximum speed or temperature, which can cause premature wear or coil damage. Always consult the legal manufacturer or supplier for model-specific data and compliance.

Working Principle

When electrical current is applied to the coil, it generates a magnetic field that attracts an armature plate against a stationary friction surface (rotor or brake disc). This engagement creates friction, generating torque to stop or hold the connected shaft. De-energizing the coil releases the magnetic force, allowing a spring (or other mechanism) to retract the armature and disengage the brake. The air gap between the armature and friction surface is critical for consistent torque and release; it should be adjusted within the specified range (0.2–0.5 mm) as wear occurs. The response time depends on the electrical and mechanical characteristics of the assembly. The brake converts kinetic energy into heat during engagement, so operating temperature must be monitored to avoid exceeding the rated range (-20 to 80 °C), which could reduce torque and coil life. The protection rating (IP54–IP65) indicates suitability for dusty or wet environments. The friction material (sintered or resin) affects torque capacity and noise levels. Proper installation and periodic inspection are necessary to maintain performance and safety.

Common Materials

Electrical Steel (for coil core), Copper Wire (for coil), Friction Material (e.g., sintered metal, organic), Steel (for housing, armature, rotor)

Technical Parameters

Parameter	Typical range	Notes & selection driver
Braking Torque	5–200 N·m	Select based on load and required deceleration.
Supply Voltage	24 ±10% V DC	Other voltages available on request.
Power Consumption	15–60 W	At rated voltage and torque.
Response Time	0.05–0.3 s	Engagement and release time.
Maximum Speed	3000–6000 rpm	Limited by centrifugal force and wear.
Air Gap	0.2–0.5 mm	Adjust for consistent torque and release.
Coil Insulation Class	F–H	Determines maximum operating temperature.IEC 60085
Operating Temperature	-20–80 °C	Above 80°C reduces torque and coil life.
Protection Rating	IP54–IP65	IP65 for dusty or wet environments.IEC 60529
Friction Material	Sintered–Resin	Sintered for high torque, resin for low noise.
Weight	2–15 kg	Depends on torque rating and size.

Ranges are indicative industry figures for RFQ preparation, not a supplier commitment. Confirm every value and standard with the legal manufacturer before ordering.

Components / BOM

Coil Assembly
Generates the electromagnetic field when energized, creating the force to engage the brake.

Material: Copper wire, electrical steel laminations, insulation
Armature Plate Part
The moving part attracted by the magnetic field; presses against the rotor to create friction.

Material: Steel
Rotor/Brake Disc
The rotating friction surface attached to the shaft; interfaces with the armature to generate braking torque.

Material: Steel, often with friction lining
Housing Part
Encloses and supports internal components, provides mounting points, and often acts as the stationary magnetic path.

Material: Steel or aluminum
Spring(s) Part
Provides force to retract the armature and disengage the brake when the coil is de-energized.

Material: Spring steel

Applied To / Applications

This component is essential for the following industrial systems and equipment:

Brake/Drive Unit

View system integration details

Manufacturers of Electromagnetic Brake Assembly

Manufacturer profiles associated with Electromagnetic Brake Assembly.

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Compiled and source-reviewed by the CNFX editorial team. Each manufacturer above links to the page on that company's own website where the product is listed, with the date we checked it. How we source and review · Page last updated 6 September 2026

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Frequently Asked Questions

What is the typical braking torque range for this electromagnetic brake assembly?

The reference range is 5 to 200 N·m, but the actual torque required depends on the load and deceleration needs. Always verify the specific model's torque rating with the manufacturer or supplier.

What supply voltage is required?

The standard supply voltage is 24 V DC with a tolerance of ±10%. Other voltages may be available on request, but you must confirm with the supplier for your application.

How do I select the right friction material?

Sintered friction material is typically used for high torque applications, while resin-based material is chosen for lower noise. The choice depends on your specific requirements for torque, noise, and wear. Consult the manufacturer for guidance.

What maintenance is required?

Periodically check the air gap (0.2–0.5 mm) and adjust as needed to maintain consistent torque and release. Monitor operating temperature and response time. If you notice increased response time or reduced holding torque, inspect for wear or misalignment. Always follow the manufacturer's maintenance instructions.

Data Basis

Editorial classification, named public sources where available, and source-reviewed manufacturer records.

Preliminary Technical Classification

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pressure:	Ambient to 10 bar
other spec:	Max torque: 500 Nm, Response time: <50 ms
temperature:	-20°C to +120°C

Product Specifications

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