Locking Pin/Mechanism: Temperature Range -20°C to 120°C

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

Parameter	Typical range	Notes & selection driver
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)

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 12164, DIN 69893, ISO 15488

Parent Products

This component is used in the following industrial products

Chuck or Locking Mechanism

A mechanical device that securely holds and releases materials on an unwind spindle or mandrel during processing operations.

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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

Typical Suppliers & Equivalents

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

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 Pin/Mechanism

Manufacturer profiles associated with Locking Pin/Mechanism.

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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 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.

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 Pin/Mechanism