INDUSTRY COMPONENT

Main Body / Disc

A precision-engineered rotating disc component in bottle positioning starwheels that guides and positions containers during filling, capping, or labeling operations.

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Component Specifications

Definition
The Main Body/Disc is the central rotating element of a bottle positioning starwheel, typically mounted on a drive shaft. It features precisely machined pockets or slots that engage with container necks or bodies to accurately position bottles at specific stations in packaging lines. This component ensures smooth transfer, proper alignment, and consistent spacing between containers during high-speed production processes.
Working Principle
The disc rotates synchronously with the conveyor system, using its contoured pockets to capture bottles from an infeed conveyor. As it rotates, it transports bottles through various processing stations (filling, capping, labeling) while maintaining precise positioning and orientation. The disc's rotation speed and pocket geometry determine the indexing accuracy and throughput capacity of the starwheel system.
Materials
Stainless steel (AISI 304 or 316), aluminum alloys (6061-T6), engineering plastics (acetal, polycarbonate), or food-grade polymers. Surface finishes range from machined to polished, with optional coatings for wear resistance.
Technical Parameters
  • Max RPM 60-120
  • Diameter 200-800 mm
  • Thickness 10-40 mm
  • Load Capacity Up to 2 kg per pocket
  • Pocket Tolerance ±0.1 mm
  • Number of Pockets 6-24
Standards
ISO 9001, DIN 8741, FDA CFR 21, EHEDG

Industry Taxonomies & Aliases

Commonly used trade names and technical identifiers for Main Body / Disc.

bottle positioning starwheel rotating disc packaging machine component bottle handling starwheel disc container positioning filling line component Main Body / Disc Main Body / Disc in Beverage Manufacturing

Parent Products

This component is used in the following industrial products

Bottle Positioning Starwheel

A rotating mechanical component within a capping station that precisely positions bottles for cap application.

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Engineering Analysis

Risks & Mitigation
  • Wear and tear from continuous operation
  • Misalignment causing bottle jams
  • Material fatigue under cyclic loading
  • Contamination in food/pharma applications
FMEA Triads
Trigger: Abrasive wear from container contact
Failure: Increased pocket dimensions leading to positioning errors
Mitigation: Regular dimensional checks, use of wear-resistant materials/coatings, preventive replacement schedules
Trigger: Improper installation or mounting
Failure: Eccentric rotation causing vibration and bottle tipping
Mitigation: Precision alignment during installation, use of dial indicators for runout verification, proper torque application on fasteners

Industrial Ecosystem

Compatible With

Interchangeable Parts

Compliance & Inspection

Tolerance
Positioning accuracy: ±0.5 mm, Runout: ≤0.1 mm TIR, Surface roughness: Ra ≤0.8 μm for food contact
Test Method
Coordinate measuring machine (CMM) verification, runout testing with dial indicator, load testing with calibrated weights, material certification per ASTM/ISO standards

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 maintenance is required for starwheel discs?

Regular inspection for wear, cleaning to prevent contamination, lubrication of bearings, and verification of pocket dimensions to maintain positioning accuracy.

How do I select the right disc material for my application?

Consider container material (glass, plastic, metal), production environment (wet/dry, chemical exposure), required durability, and compliance standards (FDA, EHEDG). Stainless steel offers durability for harsh environments, while engineering plastics reduce container damage.

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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