Drive Pinion: Face Width 50-200 mm, Pressure Angle 20°

Component Specifications

Definition

A drive pinion is a critical mechanical component in slewing bearing and drive systems, typically featuring helical or spur gear teeth that mesh with the internal or external gear ring of a slewing bearing. It converts input torque from motors or hydraulic systems into controlled rotational movement of large structures, with precise tooth geometry ensuring efficient power transmission and minimal backlash.

Working Principle

The drive pinion operates on the fundamental principle of gear meshing, where its teeth engage with the gear teeth of the slewing bearing ring. As the pinion rotates under input torque, it creates a rolling action that drives the slewing bearing's rotation, enabling controlled movement of heavy loads with mechanical advantage determined by gear ratio and tooth geometry.

Materials

Typically forged alloy steel (AISI 4140, 4340, or 8620) with case hardening (carburizing or induction hardening) to achieve surface hardness of 58-62 HRC and core toughness of 30-40 HRC. High-performance applications may use specialized alloys with chromium, nickel, or molybdenum additives.

Technical Parameters

Parameter	Typical range	Notes & selection driver
Module	4-20 mm
Face Width	50-200 mm
Accuracy Grade	ISO 1328 Class 6-8
Pressure Angle	20°
Surface Finish	Ra 0.8-1.6 μm
Number Of Teeth	10-30
Heat Treatment Depth	1.5-3.0 mm

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 6336, ISO 1328, DIN 3990, AGMA 2001

Parent Products

This component is used in the following industrial products

Slewing Bearing & Drive

A mechanical assembly that enables rotational movement and provides torque for the slewing motion of a ship loader's boom or arm.

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Engineering Analysis

Risks & Mitigation

Tooth fatigue failure
Wear and pitting
Misalignment damage
Inadequate lubrication
Overloading
Corrosion in harsh environments

FMEA Triads

Trigger: Insufficient lubrication or contaminated lubricant
Failure: Accelerated tooth wear and scoring
Mitigation: Implement scheduled lubrication maintenance with quality lubricants, install filtration systems, and monitor lubricant condition regularly

Trigger: Misalignment during installation
Failure: Uneven load distribution leading to premature tooth failure
Mitigation: Use precision alignment tools during installation, verify alignment with laser alignment systems, and conduct periodic alignment checks

Industrial Ecosystem

Compatible With

Typical Suppliers & Equivalents

Compliance & Inspection

Tolerance

Tooth profile tolerance: ±0.02 mm, Pitch error: ≤0.03 mm, Runout: ≤0.05 mm

Test Method

Coordinate measuring machine (CMM) inspection, gear rolling test, hardness testing (Rockwell C), magnetic particle inspection for surface defects

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

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Manufacturers of Drive Pinion

Manufacturer profiles associated with Drive Pinion.

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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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Precision component supporting rotating shafts in vibration motors to reduce friction and maintain alignment.

Seal Groove

Precision-machined groove in aluminum bearing housings designed to accommodate sealing elements for fluid containment and contamination prevention.

Frequently Asked Questions

What is the typical service life of a drive pinion in industrial applications?

Properly maintained drive pinions typically last 10,000-20,000 operating hours, depending on load conditions, lubrication quality, and alignment precision. Regular inspection and preventive maintenance can extend service life significantly.

How do I determine the correct backlash for a drive pinion installation?

Backlash should be 0.1-0.3% of the module for most industrial applications, typically 0.1-0.6 mm. Exact specifications depend on gear size, speed, and load conditions, following manufacturer guidelines and ISO 1328 standards.

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.

Drive Pinion