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Locking Pin/Catch Component – Machinery and Equipment Manufacturing

Component Specifications

Definition

A mechanical component used in locking/retention mechanisms to securely hold moving parts in position, prevent unintended movement, and allow controlled release through manual or automated actuation. It typically consists of a pin, plunger, or latch that engages with a corresponding receptacle or notch, providing positive locking with audible or tactile feedback.

Working Principle

Operates through mechanical interference or spring-loaded engagement. When engaged, the pin/catch physically blocks movement by interfacing with a mating surface. Disengagement is achieved through axial force (pull/push), rotational action, or electromagnetic release, overcoming spring resistance or friction. Common designs include ball plungers, detent pins, and rotary latches.

Materials

High-strength alloy steel (e.g., AISI 4140, 4340), stainless steel (304/316), or hardened tool steel; corrosion-resistant coatings (zinc plating, black oxide, nickel); optional polymer tips for noise reduction.

Technical Parameters

Length 10mm to 150mm
Diameter 3mm to 25mm
Cycle Life >100,000 cycles
Spring Force 5N to 200N
Load Capacity 50N to 5000N
Operating Temperature -40°C to 120°C

Standards

ISO 8734, DIN 1481, ISO 2768-m

Industry Taxonomies & Aliases

Commonly used trade names and technical identifiers for Locking Pin/Catch.

Parent Products

This component is used in the following industrial products

Locking/Retention Mechanism

A mechanical or electromechanical component within signal connectors that secures mating connectors together and prevents accidental disconnection.

View Product Details

Engineering Analysis

Risks & Mitigation

Shear failure under overload
Corrosion in humid environments
Fatigue from cyclic loading
Inadvertent disengagement due to vibration

FMEA Triads

Trigger: Material fatigue from repeated cycling
Failure: Pin fracture or permanent deformation
Mitigation: Use fatigue-resistant alloys, implement regular inspection schedules, and design with safety factors >2

Trigger: Contamination (dirt, debris) in mechanism
Failure: Incomplete engagement or jamming
Mitigation: Add protective covers, specify IP-rated enclosures, and implement preventive maintenance cleaning

Industrial Ecosystem

Compatible With

Interchangeable Parts

Compliance & Inspection

Tolerance

±0.01mm on critical diameters, H7/g6 fit for precision applications

Test Method

Cyclic endurance testing per ISO 898-1, salt spray testing per ASTM B117, load testing with calibrated force gauges

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 difference between a locking pin and a catch?

A locking pin typically refers to a cylindrical component that inserts into a hole, while a catch often involves a hook or latch mechanism. Both serve retention purposes but differ in engagement geometry.

How do I select the right spring force for a locking pin?

Consider the vibration environment, required retention force, and operator ergonomics. Higher spring forces improve security but increase actuation effort.

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.

Locking Pin/Catch