Gear (Pinion): Face Width 20-100 mm, Pressure Angle 20°

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

Parameter	Typical range	Notes & selection driver
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

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 1328, DIN 3961, AGMA 2000

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.

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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

Typical Suppliers & Equivalents

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

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 Gear (Pinion)

2 companies list this product among what they make. Company figures are quoted from each company's own website; every card states where the relationship came from.

LUOYANG RELIABLE MACHINERY PARTS CO., LTD

Luoyang, Henan, CN

Also makes: Agricultural Machinery, Hydraulic Cylinder, Automotive Engine Parts and 9 more

Listed on the company's own website · profile compiled by CNFX from public sources

Listed there as: “Gear & Pinions”
View source page ↗ ynrsp-parts.com · checked 2026-09-17

View profile Send enquiry

Shanghai Belon Machinery Co., ltd.

Shanghai, CN

Also makes: Agricultural Machinery, Rack and Pinion, Gearbox/Reducer and 9 more

Listed on the company's own website · profile compiled by CNFX from public sources

Listed there as: “Bevel Gear And Pinion For Gearbox”
View source page ↗ belonmachinery.com · checked 2026-08-28

View profile Send enquiry

Manufacturer listings support early research and capability understanding. They are not certification, ranking, or transaction guarantees.

Compiled and source-reviewed by the CNFX editorial team. Each manufacturer above links to the page on that company's own website where the product is listed, with the date we checked it. How we source and review

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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.

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.

Gear (Pinion)