Locking Ring: Diameter Range 10-100mm

Component Specifications

Definition

A locking ring is a threaded or clamp-style precision component designed to secure optical lenses or elements within a lens mount assembly. It applies controlled axial pressure to maintain precise optical alignment, prevent movement during operation, and ensure consistent optical performance. In industrial applications, it must maintain micron-level tolerances while withstanding vibration, thermal expansion, and mechanical stress.

Working Principle

The locking ring operates on the principle of controlled mechanical interference. When tightened, it creates precise axial pressure against the optical element, generating friction that prevents rotation or axial movement. Threaded designs use helical threads to convert rotational torque into linear clamping force, while clamp-style designs use radial compression. Proper torque application ensures optimal pressure distribution without damaging optical surfaces.

Materials

Typically manufactured from: 1. Stainless Steel (AISI 304/316, 17-4PH) for corrosion resistance and strength, 2. Aluminum Alloys (6061-T6, 7075) for lightweight applications, 3. Titanium Alloys for high strength-to-weight ratio, 4. Engineering Plastics (PEEK, Delrin) for non-marring applications. Surface treatments include black oxide coating, passivation, or Teflon impregnation for reduced friction.

Technical Parameters

Parameter	Typical range	Notes & selection driver
Tolerance	±0.01mm diameter, ±0.005mm concentricity
Thread Type	Metric fine thread (M25x0.5, M30x0.75) or custom pitch
Diameter Range	10-100mm
Surface Finish	Ra 0.8μm or better
Temperature Range	-40°C to +120°C
Torque Specification	0.5-5.0 Nm depending on application
Vibration Resistance	Up to 10g RMS

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 4759-1, DIN 13, ISO 965-1, ISO 286-2

Parent Products

This component is used in the following industrial products

Lens Mount

Mechanical interface that connects a lens to an industrial camera body, ensuring precise alignment and secure attachment.

View Product Details

Cable Gland

A mechanical device used to securely attach and seal the end of an electrical cable to equipment, providing strain relief and environmental protection.

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Engineering Analysis

Risks & Mitigation

Overtightening causing optical distortion
Thread galling in aluminum components
Thermal expansion mismatch
Vibration-induced loosening
Corrosion in harsh environments

FMEA Triads

Trigger: Incorrect torque application
Failure: Lens misalignment or damage
Mitigation: Use calibrated torque tools and follow manufacturer specifications

Trigger: Material fatigue from cyclic loading
Failure: Crack propagation and catastrophic failure
Mitigation: Regular inspection and replacement per maintenance schedule

Trigger: Thermal expansion differential
Failure: Loss of clamping force at temperature extremes
Mitigation: Select materials with compatible thermal expansion coefficients

Industrial Ecosystem

Compatible With

Typical Suppliers & Equivalents

Compliance & Inspection

Tolerance

ISO 286-2 medium tolerance class for diameters, ISO 965-1 tolerance class 6H/6g for threads

Test Method

Coordinate measuring machine (CMM) verification, torque testing per ISO 16047, vibration testing per IEC 60068-2-64

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.

Compare the published product scope and source details, then include your specifications and quantity in an enquiry.

Manufacturers of Locking Ring

1 company lists this product among what they make. Company figures are quoted from each company's own website; every card states where the relationship came from.

Qingdao Rongda Machinery Technology Co., Ltd.

Qingdao, Shandong, CN

Also makes: Dump Truck

Listed on the company's own website · profile compiled by CNFX from public sources

Listed there as: “Serrated Locking Ring”
View source page ↗ rongdametal.com · recorded 2026-09-09

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Explore company information and manufacturing capabilities, then discuss the scope of your project with a relevant supplier.

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 a locking ring in lens mounts?

The primary function is to securely fasten optical elements while maintaining precise axial alignment and preventing movement during operation, vibration, or thermal cycling.

How do you determine the correct torque for a locking ring?

Correct torque is determined by material properties, thread pitch, required clamping force, and optical element sensitivity. Manufacturers provide specific torque values based on finite element analysis and testing.

Can locking rings be reused?

Yes, if within tolerance specifications and without thread damage. However, critical applications may require replacement after disassembly due to potential torque loss from thread deformation.

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.

Locking Ring