INDUSTRY COMPONENT

Movement (Linkage & Gear)

Precision mechanical linkage and gear system that converts bourdon tube displacement into rotary pointer movement in pressure gauges.

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Component Specifications

Definition
A calibrated mechanical transmission assembly consisting of linkages, gears, and pinions that accurately translates the linear displacement of a bourdon tube or diaphragm into proportional angular rotation of the pointer shaft, enabling precise pressure indication on analog pressure gauges.
Working Principle
The bourdon tube or sensing element deforms proportionally to applied pressure. This deformation is transferred through a linkage system to a sector gear, which engages with a pinion gear attached to the pointer shaft. The gear ratio amplifies small movements for readable scale indication while maintaining linearity.
Materials
Stainless steel (AISI 304/316) for corrosion resistance, brass for general applications, hardened alloy steel for high-precision gears, phosphor bronze for wear-resistant bushings.
Technical Parameters
  • Backlash <0.5°
  • Gear Ratio 5:1 to 20:1
  • Lubrication Dry-film or silicone-based lubricant
  • Accuracy Class EN 837-1: Class 0.6 to 2.5
  • Maximum Torque 0.5-2.0 N·cm
  • Operating Temperature -40°C to +120°C
Standards
ISO 5171, EN 837-1, ASME B40.100, DIN 16005

Industry Taxonomies & Aliases

Commonly used trade names and technical identifiers for Movement (Linkage & Gear).

pressure gauge movement linkage mechanism sector gear pinion gear bourdon tube transmission analog pressure indicator mechanical pressure gauge components Movement (Linkage & Gear) Movement (Linkage & Gear) in Machinery and Equipment Manufacturing

Parent Products

This component is used in the following industrial products

Pressure Gauge

A measuring instrument that monitors and displays the pressure within the Continuous Starch Hydrocyclone Separator system.

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Engineering Analysis

Risks & Mitigation
  • Gear tooth wear leading to accuracy drift
  • Linkage corrosion causing binding
  • Lubricant degradation increasing friction
  • Backlash accumulation reducing precision
FMEA Triads
Trigger: Inadequate lubrication
Failure: Increased friction and wear on gear teeth
Mitigation: Use specified high-temperature lubricants and implement regular maintenance schedules
Trigger: Corrosive media exposure
Failure: Linkage corrosion and binding
Mitigation: Select stainless steel materials and implement protective coatings
Trigger: Excessive vibration
Failure: Gear tooth fatigue and premature wear
Mitigation: Install vibration dampeners and use shock-resistant designs

Industrial Ecosystem

Compatible With

Interchangeable Parts

Compliance & Inspection

Tolerance
±0.25% to ±2.5% of full scale depending on accuracy class
Test Method
Deadweight tester calibration per ISO 5171, hysteresis testing, repeatability verification

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 causes pointer oscillation in pressure gauge movements?

Pointer oscillation typically results from excessive backlash in gear engagement, worn linkage joints, or insufficient damping in the movement assembly.

How often should pressure gauge movements be calibrated?

Industrial pressure gauges should undergo movement calibration every 6-12 months depending on service conditions, with more frequent checks in high-vibration or corrosive environments.

Can damaged gear teeth be repaired in pressure gauge movements?

No, damaged gear teeth require complete replacement of the gear component as repairs compromise accuracy. Precision gears are manufactured to exact tolerances.

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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