INDUSTRY COMPONENT

Hinge Pin

A precision cylindrical pin that serves as the rotational axis in hinge assemblies, enabling controlled angular movement between connected machine parts.

View Specifications

Component Specifications

Definition
The hinge pin is a critical mechanical component designed as a cylindrical shaft that functions as the pivot point in hinge assemblies. It facilitates rotational motion between two or more connected parts while maintaining alignment and load-bearing capacity. In industrial applications, hinge pins are engineered to withstand shear forces, torsional stresses, and repetitive motion cycles while maintaining dimensional stability and wear resistance.
Working Principle
The hinge pin operates on the principle of rotational kinematics, providing a fixed axis of rotation for connected components. It transfers loads through shear strength while minimizing friction through precise tolerances and surface finishes. The pin's cylindrical geometry distributes stress evenly, while retention mechanisms (such as cotter pins, clips, or threaded ends) prevent axial displacement during operation.
Materials
Typically manufactured from alloy steels (AISI 4140, 4340), stainless steels (304, 316), or case-hardened steels with surface treatments (chrome plating, nitriding, zinc coating). Material selection depends on load requirements, corrosion resistance needs, and environmental conditions.
Technical Parameters
  • Length Range 20-200 mm
  • Straightness 0.05 mm per 100 mm
  • Shear Strength 400-800 MPa
  • Surface Finish Ra 0.4-0.8 μm
  • Surface Hardness 45-55 HRC
  • Diameter Tolerance ±0.01 mm
Standards
ISO 2338, DIN 7, ISO 8734, DIN 6325

Industry Taxonomies & Aliases

Commonly used trade names and technical identifiers for Hinge Pin.

hinge pin industrial hinge pin machine hinge component rotational axis pin hinge assembly part DIN hinge pin ISO 2338 pin shear load pin pivot pin machinery hinge Hinge Pin in Machinery and Equipment Manufacturing

Parent Products

This component is used in the following industrial products

Hinge Assembly

A mechanical assembly that enables rotational movement of the manway door on a pressure vessel.

View Product Details

Closure Mechanism

A mechanical component that securely seals and opens the filter housing.

View Product Details

Hinge Mechanism

A mechanical assembly that enables the rotational movement of an insulated chamber door while maintaining structural integrity and thermal insulation.

View Product Details

Engineering Analysis

Risks & Mitigation
  • Shear failure under excessive load
  • Wear-induced clearance increase
  • Corrosion in harsh environments
  • Fatigue cracking from cyclic stress
  • Improper installation causing misalignment
FMEA Triads
Trigger: Insufficient shear strength for applied loads
Failure: Pin fracture during operation
Mitigation: Calculate maximum shear loads and select materials with appropriate strength margins; implement load monitoring systems
Trigger: Inadequate lubrication or contamination
Failure: Accelerated wear and increased friction
Mitigation: Establish regular lubrication schedules; use sealed hinge assemblies; implement contamination control measures
Trigger: Corrosive environment without protection
Failure: Surface pitting and diameter reduction
Mitigation: Specify corrosion-resistant materials or coatings; implement environmental controls; schedule regular inspections

Industrial Ecosystem

Compatible With

Interchangeable Parts

Compliance & Inspection

Tolerance
ISO 2768-mK for general dimensions, ISO 286 for fit tolerances
Test Method
Shear testing per ASTM F606, hardness testing per ASTM E18, corrosion testing per ASTM B117, dimensional verification with CMM

Buyer Feedback

★★★★☆ 4.7 / 5.0 (26 reviews)

"The technical documentation for this Hinge Pin is very thorough, especially regarding technical reliability."

"Reliable performance in harsh Machinery and Equipment Manufacturing environments. No issues with the Hinge Pin so far."

"Testing the Hinge Pin now; the technical reliability results are within 1% of the laboratory datasheet."

Related Components

Machine Frame
The rigid structural foundation of a CNC wood router that provides stability, vibration damping, and precision alignment for cutting operations.
pH Sensor Assembly
Precision pH sensor assembly for automated monitoring and dosing systems in industrial applications
Load Cell Assembly
Precision load cell assembly for automated powder dispensing systems
Dust Collection Port
A dust collection port is a critical component in automated powder dispensing systems that captures airborne particulates at the source to maintain clean air quality and prevent cross-contamination.

Frequently Asked Questions

What is the primary function of a hinge pin in industrial machinery?

The hinge pin serves as the rotational axis that enables controlled angular movement between connected machine components while maintaining alignment and transferring loads through shear strength.

How do I select the right hinge pin material for corrosive environments?

For corrosive environments, specify stainless steel (304 or 316 grade) or carbon steel with appropriate protective coatings (zinc, chrome, or polymer coatings) based on chemical exposure and temperature conditions.

What are common failure modes for hinge pins?

Common failures include shear fracture from overload, wear-induced diameter reduction, corrosion pitting, and fatigue cracking from cyclic loading. Proper material selection, lubrication, and preventive maintenance mitigate these risks.

Can I contact factories directly?

Yes, each factory profile provides direct contact information.

Get Quote for Hinge Pin

Hinge Leaf (Vessel Side) Hook Body