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
ParameterTypical rangeNotes & selection driver
Pin Diameter8-20 mm
Load Capacity50-500 kg
Mounting TypeWelded, bolted, or riveted
Rotation Angle0-180 degrees
Corrosion ResistanceSalt spray test >500 hours
Operating Temperature-40°C to 200°C

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 9001, DIN 250, ASME B16.5

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

Typical Suppliers & Equivalents

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

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 Hinge or Hinges

Manufacturer profiles associated with Hinge or Hinges.

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Related Components

Upper Tool (Punch)
Upper Tool (Punch) is the active forming component in metal plate bending machines that applies precise downward force to create bends in sheet metal.
Main Frame
The main frame is the primary structural component of a hydraulic press, providing rigidity and stability to withstand high compressive forces during metal forming operations.
Shaft Bearing
Precision component supporting rotating shafts in vibration motors to reduce friction and maintain alignment.
Seal Groove
Precision-machined groove in aluminum bearing housings designed to accommodate sealing elements for fluid containment and contamination prevention.

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.

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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