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Gear (Pinion) Component – Machinery and Equipment Manufacturing

Component Specifications

Definition

A pinion gear is a precision-engineered cylindrical gear with teeth cut along its circumference, designed to engage with a larger gear (gear pair) or a linear rack (rack and pinion system) to convert rotational motion into linear motion or transmit torque between shafts. In luffing gear/rack systems, it specifically drives the rack to adjust the angle or position of equipment like cranes or booms.

Working Principle

The pinion operates on the principle of gear meshing, where its teeth engage with those of a mating gear or rack. As the pinion rotates, it drives the mating component, transferring motion and force. In a rack and pinion setup, the pinion's rotation converts to linear movement of the rack, enabling precise positional control in industrial applications.

Materials

Typically made from alloy steels (e.g., AISI 4140, 4340) for strength and durability, often heat-treated (carburized or induction hardened) to achieve surface hardness of 58-62 HRC. Alternative materials include stainless steel for corrosion resistance or bronze for reduced wear in specific environments.

Technical Parameters

Module 2-10 mm
Hardness 58-62 HRC
Face Width 20-100 mm
Accuracy Grade ISO 1328 Class 6-8
Pressure Angle 20°
Number of Teeth 10-30

Standards

ISO 1328, DIN 3961, AGMA 2000

Industry Taxonomies & Aliases

Commonly used trade names and technical identifiers for Gear (Pinion).

Parent Products

This component is used in the following industrial products

Luffing Gear/Rack

A gear and rack assembly that converts rotational motion into linear motion to control the luffing (raising/lowering) of crane booms or similar equipment.

View Product Details

Engineering Analysis

Risks & Mitigation

Tooth wear or pitting due to improper lubrication
Misalignment causing noise and premature failure
Overloading leading to tooth breakage
Corrosion in harsh environments

FMEA Triads

Trigger: Inadequate lubrication
Failure: Increased friction and wear on gear teeth
Mitigation: Implement regular lubrication schedules and use high-quality lubricants suited to operating conditions.

Trigger: Misalignment during installation
Failure: Uneven load distribution and accelerated wear
Mitigation: Ensure precise alignment using laser tools and follow manufacturer installation guidelines.

Trigger: Excessive operational loads
Failure: Tooth fracture or deformation
Mitigation: Design with safety factors, conduct load analysis, and install overload protection devices.

Industrial Ecosystem

Compatible With

Interchangeable Parts

Compliance & Inspection

Tolerance

Gear tooth profile tolerance per ISO 1328 Class 6-8, backlash controlled at 0.05-0.15 mm

Test Method

Dimensional inspection with CMM, hardness testing via Rockwell scale, and performance testing under simulated load 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 difference between a pinion and a gear?

A pinion is a type of gear, specifically referring to the smaller gear in a gear pair or the driving gear in a rack and pinion system. All pinions are gears, but not all gears are pinions.

How do I select a pinion for a luffing system?

Consider factors like load capacity, speed, material compatibility with the rack, environmental conditions (e.g., corrosion), and adherence to standards like ISO 1328 for precision and durability.

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.

Gear (Pinion)