Friction Disc Pack: Torque Capacity 10-500 Nm

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

Parameter	Typical range	Notes & selection driver
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

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

Standards

ISO 16030, DIN 15435, JIS B 1452

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

View Product Details

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

Typical Suppliers & Equivalents

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

Procurement Evaluation Criteria

A practical evidence checklist for RFQ preparation and supplier evaluation.

Technical documentation

Request current drawings, revision history, and a signed specification sheet.

Manufacturing capability

Verify equipment lists, process limits, capacity, and representative production evidence.

Inspection readiness

Confirm test methods, calibrated equipment, sampling plans, and traceable reports.

Supplier transparency

Check the legal entity, factory address, ownership, certifications, and direct contacts.

CNFX does not score or rank suppliers. Buyers must verify all claims and documents with the legal manufacturer before ordering.

Manufacturers of Friction Disc Pack

Manufacturer profiles associated with Friction Disc Pack.

Sourcing Friction Disc Pack from China?

Tell us your specification and target quantity — we will match it against manufacturer records and come back with the factories that fit.

Request manufacturers We manufacture this

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

Related Components

Mounting Interface

Precision mounting interface connecting punch tips to pharmaceutical tablet press machines for accurate tablet production.

Chrome Plating

Hard chrome plating is an electroplating process that deposits a layer of chromium onto metal surfaces to enhance wear resistance, corrosion protection, and reduce friction for hydraulic cylinder piston rods.

Upper Tool (Punch)

Upper Tool (Punch) is the active forming component in metal plate bending machines that applies precise downward force to create bends in sheet metal.

Main Frame

The main frame is the primary structural component of a hydraulic press, providing rigidity and stability to withstand high compressive forces during metal forming operations.

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).

Data Basis

Editorial classification, named public sources where available, and source-reviewed manufacturer records. See the editorial policy.

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.

Friction Disc Pack