INDUSTRY COMPONENT

Main Barrel Body

Main structural housing for precision optical lens systems providing alignment, stability, and environmental protection.

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Component Specifications

Definition
The Main Barrel Body is the primary cylindrical structural component in a Precision Optical Lens Barrel Assembly, designed to precisely house and align optical elements (lenses, mirrors) while maintaining critical dimensional stability under varying thermal and mechanical conditions. It serves as the foundational reference surface for optical axis alignment and provides environmental sealing against contaminants.
Working Principle
Functions as a rigid reference structure that maintains precise concentricity and axial alignment of optical elements through precision machining and thermal stability. It minimizes deformation under load to preserve optical performance by distributing mechanical stresses evenly and maintaining consistent internal dimensions.
Materials
Aluminum alloy 6061-T6 (common), Stainless steel 316L (corrosive environments), Invar 36 (ultra-low thermal expansion), Titanium Grade 5 (high strength-to-weight ratio). Surface treatments: Hard anodizing (aluminum), Passivation (stainless steel), Nickel plating.
Technical Parameters
  • Weight Varies by material and dimensions
  • Straightness < 0.002 mm/100 mm
  • Concentricity < 0.003 mm TIR
  • Surface Finish Ra 0.4 μm (optical contact surfaces)
  • Wall Thickness 3-10 mm (depending on diameter)
  • Diameter Tolerance ±0.005 mm
  • Thermal Expansion Coefficient Match optical elements (typically < 10 ppm/°C)
Standards
ISO 10110, ISO 1101, DIN 876, DIN 3140

Industry Taxonomies & Aliases

Commonly used trade names and technical identifiers for Main Barrel Body.

optical barrel body lens housing precision cylinder optical mechanical component alignment structure thermal stability housing lens barrel assembly Main Barrel Body Main Barrel Body in Computer, Electronic and Optical Product Manufacturing

Parent Products

This component is used in the following industrial products

Precision Optical Lens Barrel Assembly

Structural housing for precise optical element alignment and protection

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Engineering Analysis

Risks & Mitigation
  • Thermal deformation affecting optical alignment
  • Machining errors causing dimensional inaccuracies
  • Material fatigue under cyclic loading
  • Corrosion in harsh environments
  • Resonant vibration affecting stability
FMEA Triads
Trigger: Thermal expansion mismatch between barrel and optical elements
Failure: Focus shift and image degradation with temperature changes
Mitigation: Select materials with matched thermal expansion coefficients; incorporate thermal compensation designs
Trigger: Machining inaccuracies in critical dimensions
Failure: Poor optical alignment and reduced system performance
Mitigation: Implement precision machining with CMM verification; use statistical process control
Trigger: Material fatigue from vibration or cyclic loading
Failure: Cracking or permanent deformation over time
Mitigation: Design with adequate safety factors; conduct fatigue testing; use materials with high endurance limits

Industrial Ecosystem

Compatible With

Interchangeable Parts

Compliance & Inspection

Tolerance
Geometric tolerancing per ISO 1101; dimensional tolerances per ISO 2768-mK
Test Method
Coordinate Measuring Machine (CMM) verification; laser interferometry for straightness; thermal cycling tests per MIL-STD-810

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.

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Frequently Asked Questions

What is the most critical tolerance for the Main Barrel Body?

Concentricity and diameter tolerance are most critical as they directly affect optical alignment and performance. Typical requirements are <0.003 mm TIR for concentricity and ±0.005 mm for diameter.

How does material selection affect optical performance?

Material thermal expansion coefficient must match optical elements to prevent focus shift with temperature changes. Invar is used for ultra-stable systems, while aluminum offers good machinability and weight advantages.

What surface treatments are recommended?

Hard anodizing for aluminum provides wear resistance and thermal stability. Passivation for stainless steel prevents corrosion. Nickel plating can provide both corrosion protection and specific surface properties.

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.

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