Link (Side Plate): Pin Hole Diameter 30-60 mm, Width 80-200 mm

Component Specifications

Definition

The Link (Side Plate) is a precision-engineered metal plate that forms the outer structural element of track chain links in crawler-type machinery. It connects to inner links via hardened pins and bushings, creating articulated joints that allow track articulation while maintaining tensile strength. These components are subjected to extreme dynamic loads, abrasion, and impact forces during operation, requiring specific metallurgical properties and dimensional accuracy to ensure chain integrity and prevent premature failure.

Working Principle

The side plate functions as a structural connector that maintains precise spacing between chain pins while transmitting tensile forces throughout the track chain. During operation, it rotates around hardened bushings while resisting bending moments and shear forces. The articulated design allows individual links to pivot relative to each other, enabling the track to conform to terrain contours while maintaining continuous power transmission from the drive sprocket to the ground.

Materials

Typically manufactured from medium-carbon alloy steels (e.g., SAE 4140, 4340) or boron steels, heat-treated to achieve surface hardness of 40-50 HRC with a tough core. Some applications use through-hardened steels or specialized wear-resistant alloys. Material specifications include minimum yield strength of 900 MPa, tensile strength of 1100-1400 MPa, and Charpy V-notch impact resistance at -40°C.

Technical Parameters

Parameter	Typical range	Notes & selection driver
Width	80-200 mm
Thickness	12-25 mm
Hardness Depth	3-8 mm case depth
Surface Finish	Ra 3.2 μm maximum
Center Distance	150-300 mm
Weight Per Link	5-25 kg
Pin Hole Diameter	30-60 mm
Bushing Bore Diameter	35-65 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 606, DIN 8187, ISO 4348, DIN 8188

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

Fatigue fracture under cyclic loading
Abrasive wear from contaminated environments
Corrosion in wet/chemical exposures
Improper heat treatment leading to brittle failure
Dimensional inaccuracy causing chain misalignment

FMEA Triads

Trigger: Material fatigue from cyclic stress concentrations
Failure: Crack propagation leading to complete fracture
Mitigation: Implement shot peening for compressive residual stresses, redesign fillet radii, use higher toughness materials

Trigger: Abrasive wear from sand/rock particles
Failure: Dimensional loss leading to chain elongation and derailment
Mitigation: Apply hard-facing coatings, improve sealing systems, implement more frequent cleaning protocols

Trigger: Improper heat treatment
Failure: Brittle fracture or excessive deformation
Mitigation: Implement statistical process control for heat treatment, add non-destructive testing (magnetic particle inspection)

Industrial Ecosystem

Compatible With

Typical Suppliers & Equivalents

Compliance & Inspection

Tolerance

±0.1 mm on critical dimensions (pin/bushing bores), ±0.3 mm on non-critical dimensions, angular tolerance ±0.5°

Test Method

Dimensional verification via CMM, hardness testing per ISO 6508, magnetic particle inspection per ASTM E1444, fatigue testing per ISO 12107

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 Link (Side Plate)

Manufacturer profiles associated with Link (Side Plate).

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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 causes premature wear in track chain side plates?

Premature wear typically results from improper tensioning, contamination ingress, inadequate lubrication, or operating beyond design load capacities. Material fatigue and abrasive wear from soil/rock particles are common failure modes.

How often should track chain side plates be inspected?

Visual inspections should occur every 250 operating hours, with detailed dimensional checks every 1000 hours. Ultrasonic testing for cracks is recommended during major overhauls (every 5000 hours).

Can side plates from different manufacturers be mixed in a single track chain?

No. Mixing components from different manufacturers can create dimensional mismatches, uneven load distribution, and accelerated wear. Always use matched sets from the same production batch when possible.

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.

Link (Side Plate)