Pin: Load Capacity 50-500 kN, Diameter 20-100 mm

Component Specifications

Definition

A precision-engineered cylindrical component that serves as a pivotal connection point between adjacent links in track chains, enabling articulation while transmitting torque and load in tracked vehicles and industrial machinery. It functions as both a fastener and a bearing surface, maintaining chain integrity under extreme mechanical stress.

Working Principle

The pin rotates within bushings or sleeves in track chain links, allowing articulation while distributing loads evenly. It transfers motion from the drive sprocket through the chain, converting rotational force into linear track movement with minimal friction and wear.

Materials

Typically alloy steel (e.g., AISI 4140, 4340) or case-hardened steel; often chrome-plated or treated with wear-resistant coatings; material hardness ranges from 55-65 HRC for surface durability.

Technical Parameters

Parameter	Typical range	Notes & selection driver
Length	100-500 mm
Diameter	20-100 mm
Hardness	55-65 HRC
Load Capacity	50-500 kN
Surface Finish	0.8-1.6 μm Ra
Tensile Strength	800-1200 MPa

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 286-2, DIN 6325, ISO 1234

Parent Products

This component is used in the following industrial products

Track Chain

A continuous chain assembly that forms the structural backbone of a tracked vehicle's undercarriage, transferring power from the drive sprocket to the ground.

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Engineering Analysis

Risks & Mitigation

Shear failure under overload
Premature wear from contamination
Corrosion in harsh environments
Improper installation causing misalignment

FMEA Triads

Trigger: Inadequate lubrication
Failure: Accelerated wear and seizing
Mitigation: Implement automated lubrication systems and regular maintenance schedules

Trigger: Material defects or improper heat treatment
Failure: Fracture under cyclic loading
Mitigation: Enforce strict material certification and non-destructive testing (NDT) protocols

Trigger: Misalignment during installation
Failure: Uneven load distribution and premature failure
Mitigation: Use precision alignment tools and torque-controlled installation procedures

Industrial Ecosystem

Compatible With

Typical Suppliers & Equivalents

Compliance & Inspection

Tolerance

Diameter: h6/h7 per ISO 286-2; Straightness: 0.05 mm per 100 mm length

Test Method

Hardness testing (Rockwell C), dimensional verification (CMM), magnetic particle inspection for defects

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

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Manufacturers of Pin

Manufacturer profiles associated with Pin.

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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 is the primary function of a track chain pin?

It connects track chain links while enabling articulation and transmitting motion/loads in tracked machinery like excavators and bulldozers.

How often should track chain pins be inspected?

Inspect every 250-500 operating hours; replace when wear exceeds 3-5% of original diameter or shows visible scoring/grooving.

Can track chain pins be reconditioned?

Yes, through machining and re-hardening if within tolerance limits; otherwise replacement is recommended for safety.

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.

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