INDUSTRY COMPONENT

Pinion

A pinion is a small gear that meshes with a larger gear or rack to transmit rotational motion and torque in mechanical systems.

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Component Specifications

Definition
A pinion is a precision-engineered gear component designed to engage with a mating gear (typically larger) or a linear rack in rack-and-pinion systems. It converts rotational motion into linear motion or transmits torque between parallel or intersecting shafts. Pinions are characterized by their smaller diameter compared to mating gears, higher rotational speed, and specific tooth geometry optimized for load distribution and minimal backlash.
Working Principle
The pinion operates on the principle of gear meshing, where its teeth engage with the teeth of a mating gear or rack. As the pinion rotates, it drives the mating component, transferring motion and force. In rack-and-pinion systems, the rotational motion of the pinion is converted into linear motion of the rack, commonly used in steering mechanisms and linear actuators.
Materials
Common materials include alloy steels (e.g., AISI 4140, 4340), stainless steels (e.g., 304, 316), case-hardened steels, brass, and engineered plastics (e.g., nylon, acetal). Material selection depends on load, speed, corrosion resistance, and environmental conditions.
Technical Parameters
  • Module 1-10 mm
  • Backlash 0.05-0.2 mm
  • Hardness HRC 45-60 (for steel)
  • Face Width 10-100 mm
  • Pitch Diameter 20-500 mm
  • Pressure Angle 20° or 14.5°
  • Number of Teeth 10-50
Standards
ISO 1328, DIN 3960, AGMA 2000

Industry Taxonomies & Aliases

Commonly used trade names and technical identifiers for Pinion.

pinion gear rack and pinion small gear power transmission mechanical component gear specifications industrial gears Pinion Pinion in Machinery and Equipment Manufacturing

Parent Products

This component is used in the following industrial products

Rack and Pinion

A mechanical linear actuator that converts rotational motion into linear motion.

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Engineering Analysis

Risks & Mitigation
  • Tooth wear or breakage due to overload
  • Misalignment causing uneven wear
  • Insufficient lubrication leading to overheating
  • Backlash increase affecting precision
FMEA Triads
Trigger: Excessive load or shock loading
Failure: Tooth fracture or bending
Mitigation: Design with adequate safety factor, use impact-resistant materials, implement load monitoring
Trigger: Poor lubrication or contamination
Failure: Abrasive wear or pitting
Mitigation: Use proper lubricants, install seals, regular maintenance schedules
Trigger: Misalignment during installation
Failure: Uneven tooth contact and premature wear
Mitigation: Precision alignment tools, training for installers, use of flexible couplings

Industrial Ecosystem

Compatible With

Interchangeable Parts

Compliance & Inspection

Tolerance
ISO 1328 Class 5-7 for precision applications
Test Method
Gear measurement via coordinate measuring machines (CMM), backlash testing, hardness testing per ASTM E18

Buyer Feedback

★★★★☆ 4.6 / 5.0 (39 reviews)

"The Pinion we sourced perfectly fits our Machinery and Equipment Manufacturing production line requirements."

"Found 23+ suppliers for Pinion on CNFX, but this spec remains the most cost-effective."

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

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Frequently Asked Questions

What is the difference between a pinion and a gear?

A pinion is a type of gear, specifically the smaller gear in a pair. The term 'pinion' emphasizes its role as the driving or smaller component, often in rack-and-pinion systems or gear trains.

How do I select the right pinion for my application?

Consider factors like load capacity, speed, material compatibility, environmental conditions, and mating component specifications. Consult ISO or AGMA standards for gear design guidelines.

What maintenance does a pinion require?

Regular lubrication, inspection for wear or damage, alignment checks, and monitoring of backlash to ensure optimal performance and longevity.

Can I contact factories directly?

Yes, each factory profile provides direct contact information.

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