INDUSTRY COMPONENT

Pivot Pin/Bushing

A precision pivot pin and bushing assembly enabling smooth rotational movement in release mechanisms with minimal friction and wear.

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Component Specifications

Definition
The pivot pin/bushing is a critical mechanical component in release handle mechanisms, consisting of a hardened steel pin rotating within a low-friction bushing. This assembly provides a precise pivot point that allows controlled rotational movement while maintaining alignment, reducing wear through proper lubrication channels, and ensuring consistent operation over thousands of cycles. It serves as the fulcrum for mechanical advantage in release systems.
Working Principle
The pivot pin rotates within the bushing to create a low-friction bearing surface, converting linear force from the release handle into rotational motion. The bushing distributes load evenly across the pin surface while maintaining precise clearance tolerances to prevent binding or excessive play.
Materials
Pin: Case-hardened steel (AISI 8620 or equivalent, HRC 58-62); Bushing: Bronze alloy (SAE 660 or C93200) with graphite impregnation or PTFE-lined steel for self-lubricating properties.
Technical Parameters
  • Length 20-40 mm
  • Pin Diameter 8-12 mm
  • Bushing ID/OD ID matches pin diameter +0.02-0.05 mm clearance, OD 12-18 mm
  • Load Capacity 500-2000 N radial load
  • Surface Finish Pin: Ra 0.4 μm max, Bushing: Ra 0.8 μm max
  • Operating Temperature -20°C to +120°C
Standards
ISO 286-2, DIN 1494, ISO 4378-1

Industry Taxonomies & Aliases

Commonly used trade names and technical identifiers for Pivot Pin/Bushing.

pivot pin bushing release mechanism rotational bearing low friction bushing mechanical pivot industrial components wear resistance Pivot Pin/Bushing Pivot Pin/Bushing in Machinery and Equipment Manufacturing

Parent Products

This component is used in the following industrial products

Release Handle/Mechanism

A manual or mechanical control device used to disengage the locking mechanism of a fifth wheel coupling.

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Engineering Analysis

Risks & Mitigation
  • Wear-induced clearance leading to mechanism slop
  • Corrosion in humid environments
  • Lubrication failure causing seizure
  • Improper installation causing misalignment
FMEA Triads
Trigger: Insufficient lubrication
Failure: Increased friction leading to binding and eventual seizure
Mitigation: Implement automatic lubrication systems or use self-lubricating bushings; establish regular maintenance schedules
Trigger: Contamination ingress
Failure: Abrasive wear and scoring of surfaces
Mitigation: Install protective seals or shields; use closed housing designs; implement clean environment protocols
Trigger: Misalignment during installation
Failure: Uneven wear and premature failure
Mitigation: Use alignment fixtures during assembly; implement torque-controlled installation procedures; add alignment marks

Industrial Ecosystem

Compatible With

Interchangeable Parts

Compliance & Inspection

Tolerance
Pin diameter: h6 tolerance, Bushing bore: H7 tolerance per ISO 286-2
Test Method
Radial play measured with dial indicator under 100N load; wear testing per ISO 4378-1 with 100,000 cycles at rated load

Procurement Evaluation Criteria

Not customer reviews or live demand data. These dimensions support RFQ preparation and supplier evaluation.

Technical documentation
4/5
Manufacturing capability
4/5
Inspection readiness
5/5
Supplier transparency
3/5

These scores are example evaluation dimensions, not real customer ratings, country-specific buyer feedback, or live inquiry activity.

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Frequently Asked Questions

What lubrication is recommended for pivot pin/bushing assemblies?

Use lithium-based grease or synthetic lubricants compatible with both steel and bronze. For maintenance-free applications, self-lubricating bushings with graphite or PTFE impregnation are recommended.

How often should pivot pins and bushings be inspected?

Visual inspection every 500 operating hours, with dimensional checks every 2000 hours or during scheduled maintenance. Replace if wear exceeds 0.1 mm radial clearance or visible scoring is present.

Can pivot pins be used without bushings?

Not recommended. Direct metal-to-metal contact accelerates wear, increases friction, and can lead to galling. Bushings provide necessary wear surfaces and simplify replacement.

Can I contact factories directly?

Yes, each factory profile provides direct contact information.

Data Basis

CNFX manufacturer profiles, technical classification, publicly available product information, and ongoing plausibility checks.

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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Pivot Pin/Bearing Pivot Pins