INDUSTRY COMPONENT

Locking Pin/Mechanism

A precision locking pin or mechanism used in chucks and clamping systems to secure workpieces during machining operations.

Component Specifications

Definition
A mechanical component designed to engage with mating features on a chuck or locking mechanism to prevent rotational or axial movement of workpieces during machining processes. It typically consists of a hardened steel pin with precise geometry that interfaces with corresponding grooves or holes, often incorporating spring-loaded or hydraulic actuation for reliable engagement and disengagement.
Working Principle
The locking pin operates by mechanical interference or positive engagement. When activated (manually, pneumatically, or hydraulically), the pin extends into a precisely machined recess or groove on the rotating component, creating a rigid connection that prevents relative motion. Disengagement retracts the pin, allowing free rotation or removal of the workpiece. Some advanced versions use tapered or ball-lock designs for self-centering and increased holding force.
Materials
Typically made from alloy steels (AISI 4140, 4340) or tool steels (D2, A2) with hardness 45-60 HRC. Corrosion-resistant variants use stainless steels (17-4PH, 316). Surface treatments include nitriding, chrome plating, or TiN coating for wear resistance.
Technical Parameters
  • Tolerance H7/g6
  • Cycle Life >1 million cycles
  • Pin Diameter 6-25 mm
  • Engagement Force 200-2000 N
  • Temperature Range -20°C to 120°C
  • Operating Pressure 4-10 bar (pneumatic)
Standards
ISO 12164, DIN 69893, ISO 15488

Industry Taxonomies & Aliases

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

Parent Products

This component is used in the following industrial products

Engineering Analysis

Risks & Mitigation
  • Pin failure causing workpiece ejection
  • Wear leading to inaccurate positioning
  • Contamination jamming mechanism
  • Overpressure damaging components
FMEA Triads
Trigger: Material fatigue from cyclic loading
Failure: Pin fracture during operation
Mitigation: Use higher-grade alloy steels, implement regular inspection schedules, and monitor cycle counts
Trigger: Contaminant buildup in mechanism
Failure: Incomplete engagement or jamming
Mitigation: Install protective covers, use clean compressed air, and implement preventive cleaning procedures

Industrial Ecosystem

Compatible With

Interchangeable Parts

Compliance & Inspection

Tolerance
±0.01mm on critical dimensions, concentricity within 0.02mm
Test Method
Dimensional verification with CMM, engagement force testing with load cells, cycle testing under simulated operating conditions

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 maintenance is required for locking pins?

Regular inspection for wear, lubrication of moving parts, and verification of engagement force. Replace if wear exceeds 0.1mm or if engagement becomes inconsistent.

Can locking pins be customized for specific applications?

Yes, custom diameters, lengths, materials, and actuation methods (manual, pneumatic, hydraulic) are available to match specific chuck designs and operational requirements.

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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