Track Pins: Length 150-400 mm, Surface Finish Ra 0.8-1.6 μm

Component Specifications

Definition

Track pins are precision-engineered cylindrical components that serve as pivotal connection points between adjacent track links in crawler track systems. They facilitate articulation during track movement while transmitting operational loads from the track shoes to the undercarriage structure. These components are subjected to extreme shear forces, bending moments, and abrasive wear during operation.

Working Principle

Track pins function as rotating joints that allow adjacent track links to articulate relative to each other during track movement. They maintain proper track alignment while distributing operational loads across the track system. The pins rotate within bushing surfaces during track articulation, with lubrication systems reducing friction and wear.

Materials

Alloy steel (typically AISI 4140, 4340, or equivalent grades) with surface hardening treatments. Common specifications include: Through-hardened to 40-45 HRC core with induction-hardened surface to 55-60 HRC; Chrome plating (0.05-0.10 mm) for corrosion resistance; Alternative materials include boron steel for enhanced wear resistance.

Technical Parameters

Parameter	Typical range	Notes & selection driver
Length	150-400 mm
Weight	1-15 kg (depending on size)
Diameter	30-100 mm (varies by machine size)
Hardness	Core: 40-45 HRC, Surface: 55-60 HRC
Surface Finish	Ra 0.8-1.6 μm
Straightness Tolerance	0.1 mm per 100 mm

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 7154, ISO 2768-m, SAE J429

Parent Products

This component is used in the following industrial products

Crawler Tracks / Axles

Track and axle components that provide mobility and load-bearing support for carrier vehicles.

View Product Details

Engineering Analysis

Risks & Mitigation

Shear failure under overload
Excessive wear leading to track elongation
Corrosion in wet/chemical environments
Improper installation causing premature failure
Material fatigue from cyclic loading

FMEA Triads

Trigger: Inadequate lubrication
Failure: Accelerated wear and seizure
Mitigation: Implement regular lubrication schedules and use high-temperature grease

Trigger: Impact loading from uneven terrain
Failure: Bending or shear fracture
Mitigation: Operate within specified load limits and avoid sudden directional changes

Trigger: Corrosive environments
Failure: Reduced cross-sectional area and strength
Mitigation: Use corrosion-resistant coatings and implement regular cleaning

Industrial Ecosystem

Compatible With

Typical Suppliers & Equivalents

Compliance & Inspection

Tolerance

Diameter: h9/h10, Length: ±0.5 mm, Straightness: 0.1 mm/100 mm

Test Method

Dimensional verification per ISO 286-2, hardness testing per ISO 6508, surface roughness measurement per ISO 4287, non-destructive testing (magnetic particle or ultrasonic) 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

Check the legal entity, factory address, ownership, certifications, and direct contacts.

CNFX does not score or rank suppliers. Buyers must verify all claims and documents with the legal manufacturer before ordering.

Manufacturers of Track Pins

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.

Precimach

Jiangsu, CN

Also makes: Hydraulic Cylinder, Power Transmission, Hydraulic Manifold and 9 more

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

Listed there as: “Track Pins”
View source page ↗ precimach.com · checked 2026-09-14

View profile Send enquiry

Manufacturer listings support early research and capability understanding. They are not certification, ranking, or transaction guarantees.

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 causes track pin failure?

Common failure modes include excessive wear from abrasive conditions, bending from impact loads, shear failure from overload, and corrosion in harsh environments. Proper lubrication and regular inspection can prevent premature failure.

How often should track pins be replaced?

Replacement intervals depend on operating conditions, typically 2,000-5,000 hours for standard applications. Monitor for increased track pitch, visible wear, or abnormal track articulation as indicators for replacement.

Are track pins interchangeable between different machine brands?

Track pins are generally not interchangeable between different manufacturers or machine models due to variations in diameter, length, hardness specifications, and retention systems. Always use OEM-specified parts.

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.

Track Pins