INDUSTRY COMPONENT

Friction Disc Pack

Friction disc pack is a multi-plate assembly in electromagnetic clutch-brake units that enables torque transmission through controlled friction engagement.

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Component Specifications

Definition
A friction disc pack consists of alternating friction discs and separator plates arranged in a stack within an electromagnetic clutch-brake unit. When the electromagnetic coil is energized, it creates a magnetic field that pulls the armature plate, compressing the disc pack and creating friction between the surfaces. This friction transmits torque from the input to the output shaft (clutch mode) or stops rotation by engaging with a stationary housing (brake mode). The pack is designed for precise engagement, heat dissipation, and wear resistance in industrial applications.
Working Principle
Operates on electromagnetic actuation and friction-based torque transmission. When energized, the electromagnetic coil generates a magnetic field that moves the armature, compressing the friction disc pack. The resulting friction between alternating discs transmits torque or provides braking force. Disengagement occurs when de-energized, with springs separating the discs.
Materials
Friction discs: Sintered bronze, paper-based composites, or ceramic-organic materials with friction modifiers. Separator plates: Steel (AISI 1045/1070) with hardening (HRC 45-55). Coatings: Phosphating or zinc plating for corrosion resistance.
Technical Parameters
  • Air Gap 0.3-0.8 mm
  • Disc Diameter 50-200 mm
  • Disc Thickness 1.5-3.0 mm
  • Operating Speed Up to 3600 RPM
  • Torque Capacity 10-500 Nm
  • Number of Plates 3-15 pairs
  • Operating Temperature -20°C to 150°C
  • Coefficient of Friction 0.10-0.25
Standards
ISO 16030, DIN 15435, JIS B 1452

Industry Taxonomies & Aliases

Commonly used trade names and technical identifiers for Friction Disc Pack.

friction disc pack electromagnetic clutch brake torque transmission industrial clutch brake components sintered bronze discs multi-plate clutch power transmission Friction Disc Pack in Machinery and Equipment Manufacturing

Parent Products

This component is used in the following industrial products

Industrial Electromagnetic Clutch-Brake Unit

Standalone machine for precise torque transmission and stopping in electrical equipment assembly

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Engineering Analysis

Risks & Mitigation
  • Overheating from continuous slippage
  • Contamination reducing friction coefficient
  • Misalignment causing uneven wear
  • Material fatigue under cyclic loading
FMEA Triads
Trigger: Excessive heat due to prolonged slippage
Failure: Disc material degradation, reduced friction, and eventual pack seizure
Mitigation: Install thermal sensors, use high-temperature disc materials, ensure adequate cooling
Trigger: Oil or dust contamination on friction surfaces
Failure: Loss of torque transmission, erratic engagement
Mitigation: Use sealed clutch-brake units, implement regular cleaning schedules
Trigger: Incorrect air gap adjustment
Failure: Incomplete engagement or excessive wear
Mitigation: Follow manufacturer's gap specifications, use feeler gauges for adjustment

Industrial Ecosystem

Compatible With

Interchangeable Parts

Compliance & Inspection

Tolerance
Disc thickness ±0.05 mm, flatness within 0.02 mm, parallelism within 0.01 mm
Test Method
Torque testing per ISO 16030, wear testing using dynamometer cycles, thermal cycling from -20°C to 150°C

Buyer Feedback

★★★★☆ 4.8 / 5.0 (16 reviews)

"The Friction Disc Pack we sourced perfectly fits our Machinery and Equipment Manufacturing production line requirements."

"Found 34+ suppliers for Friction Disc Pack on CNFX, but this spec remains the most cost-effective."

"The technical documentation for this Friction Disc Pack is very thorough, especially regarding technical reliability."

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Frequently Asked Questions

What causes premature wear in friction disc packs?

Premature wear results from excessive slippage, contamination (oil, dust), overheating beyond 150°C, misalignment, or using incorrect disc material for the application.

How do I select the right friction disc material?

Choose based on application: sintered bronze for high torque and heat resistance, paper-based for smooth engagement in precision machinery, or ceramic-organic for high-speed operations with minimal wear.

What maintenance is required for friction disc packs?

Regular inspection for wear (measure disc thickness), check air gap settings, clean surfaces from contamination, and ensure proper lubrication if specified (some designs run dry).

Can I contact factories directly?

Yes, each factory profile provides direct contact information.

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Frame Structure Gantry Beam