INDUSTRY COMPONENT

Hinge Pins & Brackets

Hinge pins and brackets are critical components in dump body systems that enable controlled articulation and secure attachment between the dump body and chassis frame.

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Component Specifications

Definition
Hinge pins and brackets form the pivotal connection mechanism in dump body assemblies, consisting of precisely machined cylindrical pins that rotate within corresponding bracket housings. These components facilitate the controlled tilting motion of the dump body during material discharge operations while maintaining structural integrity under extreme load conditions. The system typically includes hardened steel pins, reinforced mounting brackets, and retention mechanisms to prevent accidental disengagement.
Working Principle
Hinge pins serve as rotational axes that allow the dump body to pivot relative to the chassis frame. Brackets provide secure mounting points and bearing surfaces for the pins, distributing operational loads across the chassis structure. During dumping operations, hydraulic cylinders apply force to rotate the dump body around the hinge pin axis, while brackets maintain alignment and prevent lateral movement.
Materials
High-strength alloy steel (AISI 4140/4340), heat-treated to HRC 40-45; corrosion-resistant coatings (zinc plating, powder coating, or hot-dip galvanizing); optional stainless steel (316 grade) for corrosive environments; bronze or polymer bushings for wear surfaces.
Technical Parameters
  • Pin Length 150-500 mm
  • Pin Diameter 25-100 mm
  • Load Capacity 5-50 tons
  • Surface Hardness HRC 40-45
  • Bracket Thickness 10-25 mm
  • Operating Temperature -40°C to 120°C
Standards
ISO 286-2, DIN 6325, SAE J429, ASTM A29

Industry Taxonomies & Aliases

Commonly used trade names and technical identifiers for Hinge Pins & Brackets.

dump body hinge pins truck hinge brackets heavy equipment components dump truck parts pivot pins mounting brackets articulated connections Hinge Pins & Brackets Hinge Pins & Brackets in Motor Vehicle Manufacturing

Parent Products

This component is used in the following industrial products

Dump Body

The main cargo-carrying container of a dump truck that tilts to unload materials.

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Engineering Analysis

Risks & Mitigation
  • Shear failure under overload
  • Corrosion-induced weakening
  • Bearing surface wear
  • Fatigue cracking
  • Improper installation leading to misalignment
FMEA Triads
Trigger: Insufficient lubrication
Failure: Accelerated wear and seizing
Mitigation: Implement automated lubrication systems and regular maintenance schedules
Trigger: Material fatigue from cyclic loading
Failure: Crack propagation and catastrophic fracture
Mitigation: Use fatigue-resistant alloys and implement non-destructive testing during inspections
Trigger: Corrosive environment exposure
Failure: Reduced cross-sectional strength and premature failure
Mitigation: Apply corrosion-resistant coatings and use stainless steel components in harsh environments

Industrial Ecosystem

Compatible With

Interchangeable Parts

Compliance & Inspection

Tolerance
Pin diameter: ±0.05 mm, Bracket bore: H7 tolerance, Straightness: 0.1 mm per 100 mm
Test Method
Ultrasonic testing for internal defects, hardness testing (Rockwell C), dimensional verification with micrometers, load testing to 150% of rated capacity

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

How often should hinge pins be inspected?

Hinge pins should be visually inspected weekly for wear, corrosion, and deformation, with detailed measurements taken during scheduled maintenance every 500 operating hours or 3 months.

What causes premature hinge pin failure?

Common causes include inadequate lubrication, misalignment during installation, excessive side loading, corrosion from environmental exposure, and using pins below required hardness specifications.

Can hinge pins be reconditioned?

Yes, pins with minor wear can be reconditioned through precision grinding and re-hardening, but replacement is recommended when wear exceeds 5% of original diameter or surface damage compromises structural integrity.

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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