INDUSTRY COMPONENT

Gear Wheel

A precision mechanical component with teeth that mesh with another toothed part to transmit torque and motion in machinery.

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Component Specifications

Definition
A gear wheel is a rotating machine element with cut teeth, or cogs, which mesh with another toothed component to change the speed, torque, and direction of a power source. It is a fundamental part of gear sets used in various mechanical systems for power transmission, speed reduction or increase, and motion control. Gears are engineered to precise specifications to ensure efficient energy transfer with minimal losses.
Working Principle
Gears operate on the principle of mechanical advantage through tooth engagement. When two gears mesh, the rotational motion and torque from the driving gear (pinion) are transferred to the driven gear. The gear ratio, determined by the number of teeth on each gear, defines the speed and torque conversion. Proper meshing requires precise tooth profiles (like involute curves) to ensure smooth, continuous motion and load distribution.
Materials
Typically made from alloy steels (e.g., AISI 4140, 4340) for strength and durability, often heat-treated (carburized, hardened, tempered). Other materials include cast iron, stainless steel, brass, bronze, or polymers (e.g., nylon) for specific applications like corrosion resistance or noise reduction.
Technical Parameters
  • Module 2-10 mm
  • Hardness 58-62 HRC (for hardened steel)
  • Face Width 10-100 mm
  • Accuracy Grade ISO 1328 Class 5-8
  • Pitch Diameter 50-500 mm
  • Pressure Angle 20 degrees
  • Number of Teeth Varies by design
Standards
ISO 1328, DIN 3960, AGMA 2000, JIS B 1702

Industry Taxonomies & Aliases

Commonly used trade names and technical identifiers for Gear Wheel.

gear wheel mechanical gear power transmission torque gear set industrial components machinery parts gear specifications Gear Wheel in Machinery and Equipment Manufacturing

Parent Products

This component is used in the following industrial products

Gear Set

A collection of two or more gears that work together to transmit motion and torque between rotating shafts within a drive system.

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Engineering Analysis

Risks & Mitigation
  • Tooth breakage under overload
  • Wear and pitting from friction
  • Misalignment causing noise and inefficiency
  • Lubrication failure leading to overheating
FMEA Triads
Trigger: Excessive torque or shock loads
Failure: Tooth fracture or bending
Mitigation: Design with adequate safety factors, use impact-resistant materials, and implement torque limiters.
Trigger: Insufficient or contaminated lubrication
Failure: Scoring, wear, or overheating
Mitigation: Follow lubrication schedules, use proper lubricants, and seal gear housings against contaminants.
Trigger: Misalignment during installation
Failure: Uneven tooth contact and premature wear
Mitigation: Use precision alignment tools, follow installation procedures, and conduct regular inspections.

Industrial Ecosystem

Compatible With

Interchangeable Parts

Compliance & Inspection

Tolerance
Tooth profile tolerance per ISO 1328 (e.g., ±0.02 mm for pitch), backlash controlled to 0.1-0.3 mm depending on application
Test Method
Dimensional checks with gear measuring machines, hardness testing (Rockwell), noise and vibration analysis, and load testing under operational conditions

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 is the purpose of a gear wheel in industrial machinery?

A gear wheel transmits torque and motion between shafts, changes speed or direction, and provides mechanical advantage in systems like conveyors, engines, and robotics.

How do I select the right gear material?

Choose based on load, speed, environment, and cost. Use alloy steel for high strength, stainless for corrosion resistance, or polymers for lightweight, low-noise applications.

What are common failure modes for gear wheels?

Common failures include tooth wear, pitting, bending fatigue, and scoring due to improper lubrication, overload, misalignment, or material defects.

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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Gear Teeth Segment (if applicable) Gearbox Housing