Can I contact factories directly on CNFX?

CNFX is an open directory. Each factory profile provides direct contact information.

Metal Sleeve Component – Computer, Electronic and Optical Product Manufacturing

Q: What is the primary function of a metal sleeve in fiber optic connectors?

The metal sleeve provides precise alignment of optical fibers within ferrules to minimize insertion loss and back reflection, while offering mechanical protection and thermal stability.

Q: Why are specific materials like stainless steel used for these sleeves?

Stainless steel offers excellent corrosion resistance, dimensional stability across temperature variations, and sufficient hardness to maintain precision during repeated mating cycles.

Q: How does sleeve concentricity affect optical performance?

Concentricity errors directly contribute to insertion loss. Sub-micron concentricity (typically <1μm) is critical for maintaining low loss (<0.2dB) in single-mode applications.

Component Specifications

Definition

A cylindrical metal component designed to house and precisely align optical fibers within a fiber optic ferrule assembly. It provides mechanical stability, thermal management, and protection against environmental factors while maintaining sub-micron alignment accuracy required for low insertion loss in optical connections.

Working Principle

The metal sleeve operates on mechanical alignment principles, using its precisely machined inner diameter to concentrically position optical fibers. It maintains dimensional stability through thermal expansion matching and provides electromagnetic shielding while facilitating consistent mating between connector components.

Materials

Stainless steel (typically 303, 304, or 316 grades), beryllium copper, or nickel-plated brass with surface finishes of 0.4μm Ra or better. Materials selected for corrosion resistance, thermal stability, and non-magnetic properties.

Technical Parameters

Length 5-15mm typical
Hardness ≥ HRC 40
Concentricity < 1.0μm
Inner Diameter 125μm ± 0.5μm (for single-mode fibers)
Outer Diameter 2.5mm or 1.25mm standard
Surface Finish ≤ 0.4μm Ra
Temperature Range -40°C to +85°C

Standards

ISO/IEC 61754, IEC 61754-7, TIA/EIA-604

Industry Taxonomies & Aliases

Commonly used trade names and technical identifiers for Metal Sleeve.

Parent Products

This component is used in the following industrial products

Precision Fiber Optic Ferrule

Ceramic alignment component for fiber optic connectors

View Product Details

Engineering Analysis

Risks & Mitigation

Concentricity deviation causing insertion loss
Material fatigue from repeated mating cycles
Corrosion in harsh environments
Thermal expansion mismatch

FMEA Triads

Trigger: Manufacturing tolerance stack-up
Failure: Increased insertion loss exceeding 0.5dB
Mitigation: Implement statistical process control with Cpk ≥ 1.67, 100% optical inspection of critical dimensions

Trigger: Material wear from repeated connector mating
Failure: Degraded alignment leading to intermittent connections
Mitigation: Use hardened materials (HRC ≥ 40), apply wear-resistant coatings, design for ≥500 mating cycles

Trigger: Thermal expansion mismatch with ceramic ferrules
Failure: Seasonal performance variation in outdoor installations
Mitigation: Select materials with matched CTE, use compensating designs, specify operating temperature range

Industrial Ecosystem

Compatible With

Interchangeable Parts

Compliance & Inspection

Tolerance

Geometric tolerances per ISO 1101, dimensional tolerances per ISO 2768-m

Test Method

Insertion loss testing per IEC 61300-3-4, dimensional verification with coordinate measuring machines, environmental testing per Telcordia GR-326

Procurement Evaluation Criteria

Not customer reviews or live demand data. These dimensions support RFQ preparation and supplier evaluation.

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.

Related Components

Main Processor

Central processing unit for industrial IoT gateways enabling real-time data processing and communication in manufacturing environments.

Memory Module

Memory module for Industrial IoT Gateway data storage and processing

Storage Module

Industrial-grade storage module for data logging and firmware in IoT gateways

Ethernet Controller

Industrial Ethernet controller for real-time data transmission in Industrial IoT Gateways.

Frequently Asked Questions

What is the primary function of a metal sleeve in fiber optic connectors?

The metal sleeve provides precise alignment of optical fibers within ferrules to minimize insertion loss and back reflection, while offering mechanical protection and thermal stability.

Why are specific materials like stainless steel used for these sleeves?

Stainless steel offers excellent corrosion resistance, dimensional stability across temperature variations, and sufficient hardness to maintain precision during repeated mating cycles.

How does sleeve concentricity affect optical performance?

Concentricity errors directly contribute to insertion loss. Sub-micron concentricity (typically <1μm) is critical for maintaining low loss (<0.2dB) in single-mode applications.

Can I contact factories directly?

Yes, each factory profile provides direct contact information.

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.

Metal Sleeve