Editorial Technical Reference

Starwheel Body

This page explains how Starwheel Body is classified within Machinery and Equipment Manufacturing. Technical values and manufacturer relationships are research references; confirm the current specification and supplier evidence for each order.

Technical Definition & Core Assembly

The main structural component of a container infeed starwheel that provides mounting points for starwheel arms and guides containers during transfer.

Representative product image. Confirm appearance and specifications with the manufacturer.

Product Specifications

Technical details and manufacturing context for Starwheel Body

Definition
The starwheel body is the central structural element of a container infeed starwheel assembly in packaging and bottling lines. It serves as the foundation that supports and positions the starwheel arms or paddles, ensuring precise alignment and smooth transfer of containers from the infeed conveyor to downstream processing equipment. The body's design determines the starwheel's indexing accuracy and overall system reliability. Manufactured from materials such as stainless steel, carbon steel, or aluminum alloy, the body is machined to meet specified dimensional and surface finish requirements. Key parameters include outer diameter (300–1200 mm), bore diameter (50–200 mm), thickness (20–80 mm), number of stations (6–24), radial runout (≤0.05 mm per ISO 1101), surface roughness (Ra 0.8–1.6 μm per ISO 1302), material hardness (40–50 HRC per ISO 18265), maximum operating speed (300–600 rpm), operating temperature (-10 to 60 °C), and weight (15–150 kg). For aluminum alloy versions, material grades 6061-T6 or 7075-T6 per ASTM B221 are referenced. These values are directory reference ranges and must be confirmed for the specific model and application. The starwheel body rotates on a central shaft, carrying multiple arms or paddles that engage containers. As it turns, the body's precise geometry ensures containers are picked up from the infeed conveyor, held securely during transfer, and released at the correct position to downstream equipment. The body's mounting holes and alignment features maintain consistent positioning of all starwheel components. Proper selection requires consideration of container dimensions, pitch, infeed speed, and drive shaft size. Verification of radial runout and surface roughness is essential to ensure smooth operation. Maintenance signals include increased vibration, noise, or visible wear on mounting surfaces. Failure boundaries include excessive runout, material fatigue, or dimensional distortion beyond tolerances. Always verify model-specific values and standards with the legal manufacturer or supplier.
Working Principle
The starwheel body rotates on a central shaft, carrying multiple arms or paddles that engage containers. As it turns, the body's precise geometry ensures containers are picked up from the infeed conveyor, held securely during transfer, and released at the correct position to downstream equipment. The body's mounting holes and alignment features maintain consistent positioning of all starwheel components, ensuring indexing accuracy and smooth transfer. The number of stations and the body's outer diameter determine the container pitch and throughput. Radial runout and surface roughness are critical for minimizing friction and wear. The body's material and hardness affect rigidity and durability. Operating speed is limited by dynamic balance and bearing capacity. Proper installation and alignment with the drive shaft are essential for reliable operation.
Common Materials
Stainless Steel, Carbon Steel, Aluminum Alloy
Technical Parameters
ParameterTypical rangeNotes & selection driver
Outer Diameter300–1200 mmDetermines starwheel size and container pitch
Bore Diameter50–200 mmMatches drive shaft size
Thickness20–80 mmAffects rigidity and weight
Number of Stations6–24Matches container pitch and infeed speed
Radial Runout≤0.05 mmEnsures smooth container transferISO 1101
Surface RoughnessRa 0.8–1.6 μmReduces friction and wearISO 1302
Material Hardness40–50 HRCBalances wear resistance and machinabilityISO 18265
Max Operating Speed300–600 rpmLimited by dynamic balance and bearing capacity
Operating Temperature-10–60 °COutside range may affect material properties
Weight15–150 kgAffects handling and inertia
Material Grade6061-T6 / 7075-T6Aluminum alloy for strength and light weightASTM B221

Ranges are indicative industry figures for RFQ preparation, not a supplier commitment. Confirm every value and standard with the legal manufacturer before ordering.

Components / BOM
  • Mounting Flange Part
    Provides secure attachment points for starwheel arms or paddles
    Material: steel
  • Center Hub Part
    Connects the starwheel body to the drive shaft and supports rotational movement
    Material: steel
  • Alignment Features Part
    Ensures precise positioning of starwheel arms and maintains indexing accuracy
    Material: steel

Applied To / Applications

This component is essential for the following industrial systems and equipment:

Industrial Ecosystem & Supply Chain Structure

Complementary Systems
Downstream Applications
Specialized Tooling

Application Fit & Sizing Matrix

Operational Limits
pressure: Atmospheric only (non-pressure component)
other spec: Max container weight: 5 kg, Max rotational speed: 60 RPM, Material hardness: 50-60 HRC
temperature: -20°C to 80°C
Media Compatibility
✓ PET bottles ✓ Glass containers ✓ Aluminum cans
Unsuitable: Abrasive slurries or corrosive chemical environments
Sizing Data Required
  • Container diameter range (mm)
  • Required throughput rate (containers/minute)
  • Mounting interface specifications (flange type/size)

Reliability & Engineering Risk Analysis

Failure Mode & Root Cause
Abrasive wear on contact surfaces
Cause: Particulate contamination in lubricant or operating environment causing material removal at starwheel-to-component interfaces
Fatigue cracking in spoke sections
Cause: Cyclic loading from repeated engagement/disengagement operations leading to stress concentration at spoke-to-hub junctions
Maintenance Indicators
  • Audible clicking or grinding during rotation indicating surface damage or misalignment
  • Visible wobble or irregular rotation pattern suggesting bearing wear or structural deformation
Engineering Tips
  • Implement precision laser alignment during installation to minimize eccentric loading and reduce fatigue stress concentrations
  • Establish condition-based lubrication with filtered synthetic lubricants containing anti-wear additives to prevent abrasive particle ingress

Indicative industry ranges for design and RFQ preparation. Confirm the exact figures and applicable standard with the manufacturer before specifying.

Compliance & Manufacturing Standards

Applicable Standards
ISO 2768-1: General tolerances for linear and angular dimensions ANSI B4.1: Preferred Limits and Fits for Cylindrical Parts

Quoted from the published standard.

Manufacturing Precision
  • Bore diameter: +/-0.01mm
  • Surface flatness: 0.05mm across entire face
Quality Inspection
  • Coordinate Measuring Machine (CMM) dimensional verification
  • Magnetic Particle Inspection (MPI) for surface crack detection

Manufacturers of Starwheel Body

Manufacturer profiles associated with Starwheel Body.

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Frequently Asked Questions

What materials are available for the starwheel body?

According to the directory, the starwheel body can be made from stainless steel, carbon steel, or aluminum alloy. For aluminum alloy, material grades 6061-T6 or 7075-T6 per ASTM B221 are referenced. The choice of material affects strength, weight, and corrosion resistance. Confirm the specific material grade with the manufacturer for your application.

What are the typical dimensions of a starwheel body?

The directory lists reference ranges: outer diameter 300–1200 mm, bore diameter 50–200 mm, and thickness 20–80 mm. These values are not universal; they depend on the container size and the starwheel design. Always verify the exact dimensions required for your specific infeed system with the supplier.

How is the starwheel body's precision specified?

Precision is specified by radial runout (≤0.05 mm per ISO 1101) and surface roughness (Ra 0.8–1.6 μm per ISO 1302). These parameters ensure smooth container transfer and reduce wear. The listed standards are verification references; the manufacturer must confirm compliance for the actual product.

What operating conditions does the starwheel body support?

The directory indicates a maximum operating speed of 300–600 rpm and an operating temperature range of -10 to 60 °C. These are reference ranges; actual limits depend on the material, design, and application. Always check with the manufacturer for the specific model's capabilities.

Data Basis

Editorial classification, named public sources where available, and source-reviewed manufacturer records.

Preliminary Technical Classification
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