Structured Manufacturing Data (2026)

Rotor/Brake Disc

Based on aggregated insights from structured factory profiles within the CNFX directory, the standard Rotor/Brake Disc used in the Machinery and Equipment Manufacturing sector typically supports operational capacities ranging from standard industrial configurations to heavy-duty production requirements.

Technical Definition & Core Assembly

A canonical Rotor/Brake Disc is characterized by the integration of Friction Surface and Mounting Hub. In industrial production environments, manufacturers listed on CNFX commonly emphasize High-carbon steel construction to support stable, high-cycle operation across diverse manufacturing scenarios.

The rotating component of an electromagnetic brake assembly that interacts with the stator to generate braking torque through electromagnetic forces.

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Product Specifications

Technical details and manufacturing context for Rotor/Brake Disc

Definition
In an electromagnetic brake assembly, the rotor/brake disc is the key rotating element that mounts to the shaft being braked. When the brake is engaged, electromagnetic forces create friction between the rotor and stationary stator components, converting kinetic energy into heat to slow or stop rotation. This component is essential for controlled deceleration in various industrial machinery and equipment.
Working Principle
The rotor rotates with the shaft during normal operation. When braking is required, an electromagnetic coil is energized, creating a magnetic field that attracts the rotor toward the stator, generating frictional contact. This contact creates braking torque that opposes rotation, slowing or stopping the shaft. When de-energized, springs or other mechanisms separate the components, allowing free rotation.
Common Materials
High-carbon steel, Cast iron, Sintered metal alloys
Technical Parameters
  • Outer diameter of the rotor disc (mm) Per Request
Components / BOM
  • Friction Surface Part
    Primary contact area that engages with stator to create braking friction
    Material: High-friction steel or composite
  • Mounting Hub Part
    Central connection point for secure attachment to the rotating shaft
    Material: Steel alloy
  • Cooling Fins/Vanes Part
    Dissipate heat generated during braking to prevent overheating
    Material: Same as disc material

Industry Taxonomies & Aliases

Commonly used trade names and technical identifiers for Rotor/Brake Disc.

electromagnetic brake rotor disc industrial brake disc replacement high-carbon steel brake rotor machinery brake disc assembly sintered metal brake disc

Applied To / Applications

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

Electromagnetic Brake Assembly
View system integration details

Industrial Ecosystem & Supply Chain Structure

Complementary Systems
Downstream Applications
Specialized Tooling

Application Fit & Sizing Matrix

Operational Limits
pressure: Atmospheric to 10 bar
other spec: Max rotational speed: 5000 RPM, Torque range: 5-500 Nm
temperature: -40°C to +200°C continuous, +250°C peak
Media Compatibility
✓ Dry air environments ✓ Clean hydraulic fluids (ISO 32-68) ✓ Non-corrosive gases
Unsuitable: Abrasive slurry or particulate-laden media
Sizing Data Required
  • Required braking torque (Nm)
  • System rotational speed (RPM)
  • Available electrical power/voltage for electromagnetic actuation

Reliability & Engineering Risk Analysis

Failure Mode & Root Cause
Thermal cracking
Cause: Excessive heat generation from friction during braking, leading to thermal stress and material fatigue.
Wear and thickness reduction
Cause: Continuous abrasive contact with brake pads, accelerated by contamination or improper material pairing.
Maintenance Indicators
  • Visible deep cracks or scoring on the disc surface
  • High-pitched squealing or grinding noises during braking
Engineering Tips
  • Implement regular thermal monitoring and controlled cooling to prevent overheating during operation.
  • Use compatible, high-quality brake pads and ensure proper alignment to minimize uneven wear.

Compliance & Manufacturing Standards

Reference Standards
ISO 26262:2018 - Road vehicles - Functional safety ASTM A536-84(2019) - Standard Specification for Ductile Iron Castings ECE R90 - Uniform provisions concerning the approval of replacement brake discs
Manufacturing Precision
  • Thickness variation: +/-0.01mm across the friction surface
  • Parallelism: 0.05mm maximum deviation between friction surfaces
Quality Inspection
  • Ultrasonic Testing for internal defects and material integrity
  • Hardness Testing (Rockwell or Brinell) to verify material specifications

Factories Producing Rotor/Brake Disc

Manufacturer profiles with relevant production capability in China

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Manufacturer listings support early research and capability understanding. They are not certification, ranking, or transaction guarantees.

Technical documentation
4/5
Manufacturing capability
4/5
Inspection readiness
5/5
Supplier transparency
3/5

These scores are example evaluation dimensions, not real customer ratings, country-specific buyer feedback, or live inquiry activity.

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Frequently Asked Questions

What materials are best for electromagnetic brake rotors in heavy machinery?

High-carbon steel and sintered metal alloys are preferred for their durability, heat resistance, and ability to maintain consistent friction under high torque conditions in industrial applications.

How does the cooling fin design affect brake rotor performance?

Cooling fins or vanes dissipate heat generated during braking, preventing overheating and thermal fade, which ensures consistent torque and extends the rotor's service life in continuous operation.

What maintenance is required for electromagnetic brake rotors?

Regular inspection for wear on the friction surface, checking mounting hub alignment, and ensuring clean, debris-free operation to maintain optimal electromagnetic force and braking efficiency.

Can I contact factories directly on CNFX?

CNFX is an open directory, not a transaction platform. Each factory profile provides direct contact information and production details to help you initiate direct inquiries with Chinese suppliers.

Data basis: CNFX manufacturer profiles, technical classification, publicly available product information, and ongoing plausibility checks for Machinery and Equipment Manufacturing.

Data Basis

CNFX manufacturer profiles, technical classification, publicly available product information, and ongoing plausibility checks.

Preliminary Technical Classification
This page supports structured research, RFQ preparation, and supplier evaluation. It does not replace buyer-led supplier qualification, standards review, or technical approval.

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