Iris Blades: Aperture Range 5-100 mm diameter

Component Specifications

Definition

Iris blades are thin, precisely shaped metallic components arranged radially in coupling iris mechanisms. They feature curved edges and pivot points that allow synchronized overlapping movement to create variable circular apertures. These blades operate within a housing ring with guide slots, converting rotational input into linear blade movement for precise aperture control in industrial coupling applications.

Working Principle

Iris blades operate on a radial overlapping principle where multiple blades rotate simultaneously around fixed pivot points. As an actuator rotates the control ring, cam followers on each blade move along curved slots, causing all blades to translate radially inward or outward in unison. This synchronized movement creates a continuously variable circular aperture by adjusting the overlap between adjacent blades, allowing precise control of opening size without changing the mechanism's center position.

Materials

Typically manufactured from hardened stainless steel (AISI 420, 440C) or tool steel (D2, M2) with hardness 50-60 HRC. Alternative materials include aluminum alloys (6061-T6) for lightweight applications or engineered polymers (PEEK, Delrin) for corrosion resistance. Surface treatments may include titanium nitride coating or black oxide finish for wear resistance.

Technical Parameters

Parameter	Typical range	Notes & selection driver
Aperture Range	5-100 mm diameter
Surface Finish	Ra 0.4-1.6 μm
Blade Thickness	0.5-3.0 mm
Flatness Tolerance	±0.02 mm
Operating Temperature	-40°C to 200°C
Position Repeatability	±0.01 mm

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 10110, DIN 3140

Parent Products

This component is used in the following industrial products

Coupling Iris

Aperture component within an optical output coupler that controls beam coupling efficiency and mode matching

View Product Details

Aperture

In optical assemblies, an aperture is a critical component that regulates the diameter of the light beam entering or passing through the system.

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Engineering Analysis

Risks & Mitigation

Wear on pivot points causing blade misalignment
Debris accumulation between blades jamming mechanism
Corrosion in harsh environments
Fatigue failure from cyclic loading
Thermal expansion mismatch in multi-material assemblies

FMEA Triads

Trigger: Insufficient lubrication at pivot points
Failure: Increased friction leading to uneven blade movement and aperture distortion
Mitigation: Implement automated lubrication systems and use dry-film lubricants compatible with operating temperatures

Trigger: Foreign particle ingress between blades
Failure: Jamming mechanism and potential blade deformation
Mitigation: Install protective seals and implement regular cleaning protocols with compressed air purges

Trigger: Material fatigue from high-cycle operation
Failure: Crack propagation at stress concentration points near pivot holes
Mitigation: Design with radiused corners, implement shot peening surface treatment, and establish replacement intervals based on cycle counts

Industrial Ecosystem

Compatible With

Typical Suppliers & Equivalents

Compliance & Inspection

Tolerance

±0.01 mm for blade positioning, ±0.005 mm for pivot hole diameter, angular alignment within 0.1°

Test Method

Coordinate measuring machine (CMM) verification of blade geometry, functional testing with aperture measurement at multiple positions, cycle testing to 1 million operations, environmental testing per ISO 9022

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.

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Manufacturers of Iris Blades

Manufacturer profiles associated with Iris Blades.

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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

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Frequently Asked Questions

What is the primary function of iris blades in coupling mechanisms?

Iris blades precisely control aperture size in coupling iris mechanisms by overlapping in synchronized radial movement, enabling variable opening diameters for flow regulation, light control, or mechanical connection.

How do iris blades differ from shutter blades?

Iris blades overlap to create variable circular apertures with smooth diameter changes, while shutter blades typically open/close completely without maintaining circular form. Iris blades maintain center alignment throughout operation.

What maintenance do iris blades require?

Regular cleaning to prevent debris accumulation, lubrication of pivot points with dry-film lubricants, inspection for wear on contact edges, and verification of synchronization between blades during preventive maintenance cycles.

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.

Iris Blades