INDUSTRY COMPONENT

Hinge or Hinges

Hinges are mechanical bearings that connect two solid objects, allowing a limited angle of rotation between them, commonly used on manways for controlled access.

Component Specifications

Definition
A hinge is a mechanical component consisting of two leaves joined by a pin, enabling rotational movement around a fixed axis. In industrial applications, hinges are precision-engineered to provide smooth, reliable operation under specific load conditions, temperature ranges, and environmental exposures. For manways, hinges facilitate controlled opening and closing of access panels while maintaining structural integrity and safety seals.
Working Principle
Hinges operate on the principle of rotational motion around a fixed axis (the pin). The two leaves are attached to separate surfaces (e.g., manway door and frame), with the pin allowing controlled angular displacement. Friction, wear resistance, and load distribution are critical factors in hinge design to ensure longevity and consistent performance.
Materials
Typically made from stainless steel (e.g., AISI 304, 316 for corrosion resistance), carbon steel (e.g., ASTM A36 for strength), or aluminum alloys (e.g., 6061-T6 for lightweight applications). Materials are selected based on environmental conditions (corrosive, high-temperature), load requirements, and industry standards.
Technical Parameters
  • Pin Diameter 8-20 mm
  • Load Capacity 50-500 kg
  • Mounting Type Welded, bolted, or riveted
  • Rotation Angle 0-180 degrees
  • Corrosion Resistance Salt spray test >500 hours
  • Operating Temperature -40°C to 200°C
Standards
ISO 9001, DIN 250, ASME B16.5

Industry Taxonomies & Aliases

Commonly used trade names and technical identifiers for Hinge or Hinges.

Parent Products

This component is used in the following industrial products

Engineering Analysis

Risks & Mitigation
  • Misalignment leading to seal failure
  • Corrosion causing jamming or breakage
  • Overloading beyond rated capacity
  • Improper installation resulting in premature wear
FMEA Triads
Trigger: Inadequate lubrication or contamination
Failure: Increased friction, leading to difficult operation or seizure
Mitigation: Regular maintenance with compatible lubricants; use sealed or self-lubricating hinge designs
Trigger: Material fatigue from cyclic loading
Failure: Crack formation or pin failure, resulting in hinge detachment
Mitigation: Design with safety factors; use materials with high fatigue strength; implement routine inspections

Industrial Ecosystem

Compatible With

Interchangeable Parts

Compliance & Inspection

Tolerance
±0.5 mm for pin alignment; angular deviation <1 degree
Test Method
Load testing per ISO 898-1; corrosion testing per ASTM B117; cycle testing to simulate operational lifespan

Buyer Feedback

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Frequently Asked Questions

What factors should be considered when selecting a hinge for a manway?

Key factors include load capacity, material compatibility with the environment (e.g., corrosion resistance), operating temperature range, required rotation angle, mounting method, and compliance with industry standards (e.g., pressure vessel codes).

How do hinges affect the safety of manways?

Hinges must ensure smooth, controlled operation to prevent sudden movements that could cause injury. They must also maintain alignment to preserve sealing integrity, preventing leaks or pressure loss in systems like tanks or reactors.

Can I contact factories directly?

Yes, each factory profile provides direct contact information.

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