INDUSTRY COMPONENT

Kingpin/Pivot Pin

A precision cylindrical pin that serves as the primary rotational axis in articulation joints, enabling controlled movement between connected machine components.

Component Specifications

Definition
The kingpin/pivot pin is a critical load-bearing component in articulation joints, designed to facilitate rotational motion while maintaining structural integrity under dynamic loads. It functions as the central pivot point that allows connected machine sections to articulate relative to each other, typically found in heavy machinery, construction equipment, and industrial automation systems where controlled movement is essential.
Working Principle
The kingpin/pivot pin operates on the principle of rotational bearing mechanics, where it serves as the fixed axis around which connected components rotate. It transfers loads through shear forces while minimizing friction through precision machining and proper lubrication, enabling smooth articulation while maintaining alignment and structural stability.
Materials
High-strength alloy steel (typically AISI 4140 or 4340), case-hardened to 55-60 HRC with surface treatments including chrome plating or nitriding for wear resistance. Alternative materials include stainless steel (316L) for corrosive environments or bronze alloys for specific bearing applications.
Technical Parameters
ParameterTypical rangeNotes & selection driver
Hardness55-60 HRC
Straightness0.02 mm per 100 mm
Load CapacityDynamic: 50 kN, Static: 150 kN
Surface FinishRa 0.4 μm max
Temperature Range-40°C to +150°C
Diameter Tolerance±0.01 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 6325, ISO 2768-mK

Parent Products

This component is used in the following industrial products

Engineering Analysis

Risks & Mitigation
  • Wear and fatigue failure
  • Corrosion in harsh environments
  • Improper installation leading to misalignment
  • Insufficient lubrication causing seizure
  • Overloading beyond design limits
FMEA Triads
Trigger: Inadequate lubrication
Failure: Increased friction leading to wear and potential seizure
Mitigation: Implement scheduled lubrication maintenance with proper grease types and quantities
Trigger: Excessive side loads
Failure: Bending or fracture of the pin
Mitigation: Install load monitoring systems and ensure proper alignment during assembly
Trigger: Corrosive environment
Failure: Surface pitting and reduced structural integrity
Mitigation: Use corrosion-resistant materials or protective coatings with regular inspection

Industrial Ecosystem

Compatible With

Typical Suppliers & Equivalents

Compliance & Inspection

Tolerance
Geometric tolerances per ISO 1101, dimensional tolerances per ISO 286-2, surface roughness per ISO 1302
Test Method
Hardness testing per ISO 6508, dimensional verification with CMM, load testing per ISO 376, non-destructive testing (magnetic particle or ultrasonic) per ISO 9934

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 Kingpin/Pivot Pin

Manufacturer profiles associated with Kingpin/Pivot Pin.

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Frequently Asked Questions

What is the difference between a kingpin and a pivot pin?

While often used interchangeably, kingpin typically refers to the primary vertical pivot in steering systems, while pivot pin is a broader term for any rotational axis component. In articulation joints, both terms describe the central rotational element.

How often should kingpin/pivot pins be inspected?

Regular inspection every 500 operating hours or according to manufacturer specifications. Check for wear, corrosion, and proper lubrication. Replacement is typically required when wear exceeds 0.1 mm or when surface damage is visible.

What lubrication is recommended for pivot pins?

High-pressure lithium complex grease (NLGI Grade 2) with extreme pressure additives. For high-temperature applications, synthetic polyurea greases are recommended. Lubrication intervals depend on operating conditions but typically range from 50-200 hours.

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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