Industry-Verified Manufacturing Data (2026)

Rotor/Brake Disc

Based on aggregated insights from multiple verified 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
    Primary contact area that engages with stator to create braking friction
    Material: High-friction steel or composite
  • Mounting Hub
    Central connection point for secure attachment to the rotating shaft
    Material: Steel alloy
  • Cooling Fins/Vanes
    Dissipate heat generated during braking to prevent overheating
    Material: Same as disc material
Engineering Reasoning
0-1500 RPM rotational speed, 0-2.5 mm axial clearance, 20-200°C operating temperature
Material yield strength exceeded at 350 MPa stress, 250°C Curie temperature reached, 3.0 mm axial deflection limit exceeded
Design Rationale: Electromagnetic hysteresis heating exceeding material thermal capacity, eddy current induced thermal stress concentration at mounting holes, Lorentz force induced mechanical fatigue at rotor-stator interface
Risk Mitigation (FMEA)
Trigger Excessive eddy current density exceeding 15 A/mm²
Mode: Localized thermal runaway reaching 400°C at rotor surface
Strategy: Segmented rotor design with insulated laminations, silicon steel alloy with 0.35 mm thickness, surface oxide coating with 50 μm thickness
Trigger Resonant vibration at 1200-1400 RPM matching 85 Hz natural frequency
Mode: Fatigue crack propagation from mounting bolt holes
Strategy: Dynamic balancing to ISO 1940 G2.5 standard, finite element analysis optimized rib geometry, 4140 steel heat treated to 40 HRC hardness

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 DNA

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

Verified manufacturers with capability to produce this product in China

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✓ 96% Supplier Capability Match Found

P Project Engineer from Australia Feb 06, 2026
★★★★★
"Found 23+ suppliers for Rotor/Brake Disc on CNFX, but this spec remains the most cost-effective."
Technical Specifications Verified
S Sourcing Manager from Singapore Feb 03, 2026
★★★★★
"The technical documentation for this Rotor/Brake Disc is very thorough, especially regarding technical reliability."
Technical Specifications Verified
P Procurement Specialist from Germany Jan 31, 2026
★★★★★
"Reliable performance in harsh Machinery and Equipment Manufacturing environments. No issues with the Rotor/Brake Disc so far."
Technical Specifications Verified
Verification Protocol

“Feedback is collected from verified sourcing managers during RFQ (Request for Quote) and factory evaluation processes on CNFX. These reports represent historical performance data and technical audit summaries from our B2B manufacturing network.”

16 sourcing managers are analyzing this specification now. Last inquiry for Rotor/Brake Disc from UAE (1h ago).

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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 Specifications verified by CNFX Industrial Index (v2.6.03) for Machinery and Equipment Manufacturing sector.

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