Star Wheel for Bottle Positioning Systems

Product Specifications

Technical details and manufacturing context for Star Wheel

Definition

The Star Wheel is a critical component within Bottle Positioning Systems, designed to accurately guide, orient, and transfer bottles between different stages of a production line. Its star-shaped design features precisely spaced pockets or notches that cradle individual bottles, ensuring proper alignment and preventing tipping or jamming during high-speed operations. The wheel is typically manufactured from stainless steel, engineering plastic, or acetal (POM), with material grades such as POM-C, UHMWPE, or 304 stainless steel, depending on application requirements. Key parameters include the number of stations (6–24), pitch circle diameter (100–600 mm), pocket diameter (20–120 mm), surface roughness (Ra 0.4–0.8 μm), radial runout (≤0.05 mm), maximum operating speed (60–300 rpm), operating temperature (-20 to 80°C), and weight (1.5–15 kg). These values are reference ranges and must be verified for the specific model and application. The wheel operates synchronously with the conveyor system, using its pockets to guide bottles through a controlled path, often changing orientation or transferring them to another conveyor or processing station with precise timing. For procurement, verify that the selected star wheel meets the required dimensional and material specifications, and confirm compliance with relevant standards such as ASTM D6778 for material grade, ISO 4287 for surface roughness, and ISO 1101 for radial runout. Always consult the legal manufacturer or supplier to confirm model-specific values and standards before purchase.

Working Principle

The Star Wheel rotates synchronously with the conveyor system. As bottles enter the system, they are fed into the pockets between the star's protrusions. The wheel's rotation gently guides each bottle through a controlled path, often changing its orientation or transferring it to another conveyor or processing station with precise timing and positioning. The number of stations determines throughput, while the pitch circle diameter must match container spacing on the conveyor. The pocket diameter is sized to the bottle or container body diameter. Smooth surface finish prevents scratching, and low radial runout ensures precise positioning at high speeds. Dynamic balancing may be required for higher operating speeds.

Common Materials

Stainless Steel, Engineering Plastic, Acetal (POM)

Technical Parameters

Parameter	Typical range	Notes & selection driver
Number of Stations	6–24 stations	Determines throughput; more stations increase speed but require larger diameter.
Pitch Circle Diameter	100–600 mm	Must match container spacing on the conveyor.
Pocket Diameter	20–120 mm	Sized to the bottle or container body diameter.
Material Grade	POM-C / UHMWPE / 304	Food-grade options required for beverage lines.ASTM D6778
Surface Roughness	Ra 0.4–0.8 μm	Smooth finish prevents scratching containers.ISO 4287
Radial Runout	≤0.05 mm	Critical for precise positioning at high speeds.ISO 1101
Maximum Operating Speed	60–300 rpm	Higher speeds require dynamic balancing.
Operating Temperature	-20–80 °C	Exceeding range may cause material deformation.
Weight	1.5–15 kg	Affects inertia and drive sizing.

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

Hub
Central mounting component that connects to the drive shaft

Material: Stainless Steel
Star Points/Arms Part
Protrusions that form the bottle pockets and guide bottles

Material: Stainless Steel or Engineering Plastic
Pocket Inserts Part
Removable/replaceable inserts that cradle specific bottle shapes

Material: Polyurethane or Soft Plastic

Applied To / Applications

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

Bottle Positioning System

View system integration details

Manufacturers of Star Wheel

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

Wuxi Ruiniu Conveyor Equipment Co., Ltd.

Heilongjiang, CN

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

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Frequently Asked Questions

What materials are commonly used for star wheels?

Common materials include stainless steel, engineering plastic, and acetal (POM). Material grades such as POM-C, UHMWPE, or 304 stainless steel are available, but the specific grade must be confirmed with the supplier based on application requirements.

How do I determine the correct number of stations for my application?

The number of stations (6–24) affects throughput and wheel diameter. More stations increase speed but require a larger diameter. The choice depends on the desired production rate and available space. Verify the optimal number with the manufacturer.

What standards apply to star wheel specifications?

Relevant standards include ASTM D6778 for material grade, ISO 4287 for surface roughness, and ISO 1101 for radial runout. These are reference standards for verification; confirm compliance with the supplier.

Can star wheels be used in food-grade applications?

Yes, food-grade options are available, such as POM-C or UHMWPE. For beverage lines, ensure the material grade meets food safety requirements. Always verify with the manufacturer.

Data Basis

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

Preliminary Technical Classification

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pressure:	Atmospheric only (non-pressurized)
other spec:	Max rotational speed: 60 RPM, Load capacity: 50 kg per star point
temperature:	-20°C to 120°C

Star Wheel

Product Specifications

Applied To / Applications

Industrial Ecosystem & Supply Chain Structure

Application Fit & Sizing Matrix

Reliability & Engineering Risk Analysis

Compliance & Manufacturing Standards