Infeed Starwheel for Container Handling Systems

Product Specifications

Technical details and manufacturing context for Infeed Starwheel

Definition

The infeed starwheel is a mechanical component used in container handling systems to transfer containers from an infeed conveyor or supply line into the main processing or packaging machinery. Its star-shaped design features precisely spaced pockets or guides that capture each container, ensuring proper alignment, spacing, and orientation before subsequent stages. This prevents jams and maintains consistent throughput. The starwheel rotates at a controlled speed synchronized with the infeed conveyor, and its protruding arms or pockets gently guide containers along a precise path. The rotational motion transfers containers smoothly while preserving spacing and alignment. Materials commonly used include stainless steel, engineering plastic, and aluminum alloy, with specific grades depending on application requirements. Key parameters include the number of pockets (6–24), pitch circle diameter (100–800 mm), container diameter range (20–150 mm), maximum rotational speed (50–300 rpm), throughput capacity (100–1200 containers/min), pocket depth (10–80 mm), pocket radius tolerance (±0.05 mm), surface roughness (0.8–1.6 µm Ra), material hardness (55–62 HRC for steel), operating temperature range (-20 to +80 °C), balance quality grade (G6.3 per ISO 21940-11), mounting bore tolerance (H7 per ISO 286-2), and weight (0.5–20 kg). These values are reference ranges and must be verified for the specific model and application. The starwheel is a critical component for smooth container transfer, and its design must be matched to container dimensions and line speed. Verification questions include checking compatibility with container size, material suitability for the environment, and adherence to relevant standards. Maintenance signals include wear on pockets, increased vibration, or misalignment. Failure boundaries include excessive wear, cracking, or loss of dimensional accuracy, which can lead to jams or product damage. Always confirm model-specific values and standards with the legal manufacturer or supplier.

Working Principle

The starwheel rotates at a controlled speed synchronized with the infeed conveyor. As containers approach, the starwheel's protruding arms or pockets gently capture each container, guiding it along a precise path. The rotational motion transfers the container from the infeed area into the next stage of the handling system while maintaining proper spacing and alignment. The pockets are designed to match the container diameter, and the starwheel's speed is adjusted to match the line throughput. This ensures smooth, continuous transfer without jams or misalignment.

Common Materials

Stainless Steel, Engineering Plastic, Aluminum Alloy

Technical Parameters

Parameter	Typical range	Notes & selection driver
Number of starwheel pockets	6–24 pockets	Depends on container diameter and pitch.
Pitch circle diameter (PCD)	100–800 mm	Determines starwheel size and machine integration.
Container diameter range	20–150 mm	Range of container sizes the starwheel can handle.
Maximum rotational speed	50–300 rpm	Depends on container stability and material.
Throughput capacity	100–1200 containers/min	Typical range for beverage and food lines.
Pocket depth	10–80 mm	Must be sufficient to guide container without tipping.
Pocket radius tolerance	±0.05 mm	Critical for smooth container transfer.
Surface roughness (Ra)	0.8–1.6 µm	To minimize friction and wear.
Material hardness	55–62 HRC	For wear resistance if steel; polymers have different specs.
Operating temperature range	-20 to +80 °C	Typical for food-grade plastics and stainless steel.
Material	Stainless steel 304/316 or UHMW-PE	Stainless for washdown, UHMW-PE for low friction.ASTM A240 / ISO 15527
Balance quality grade	G6.3 grade	For high-speed operation to reduce vibration.ISO 21940-11
Mounting bore tolerance	H7 ISO tolerance	Ensures proper fit on drive shaft.ISO 286-2
Weight	0.5–20 kg	Depends on size and material.

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

Starwheel Body
Main structural component with star-shaped design that guides containers

Material: Stainless Steel
Pocket Inserts Part
Replaceable guides or liners that contact and position containers

Material: Engineering Plastic
Hub Assembly
Central mounting component that connects to the drive shaft

Material: Steel
Drive Shaft Interface Part
Connection point for power transmission from the drive system

Material: Steel

Applied To / Applications

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

Container Handling System

View system integration details

Manufacturers of Infeed Starwheel

Manufacturer profiles associated with Infeed Starwheel.

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Frequently Asked Questions

What is the primary function of an infeed starwheel?

The infeed starwheel guides and positions containers as they enter a handling system, ensuring proper alignment and spacing to prevent jams and maintain consistent throughput.

What materials are commonly used for infeed starwheels?

Common materials include stainless steel, engineering plastic, and aluminum alloy. The choice depends on factors like wear resistance, friction, and environmental conditions.

How do I select the right starwheel for my application?

Selection involves matching the starwheel's pocket count, pitch circle diameter, and pocket depth to your container size and line speed. Verify parameters like container diameter range and throughput capacity with the manufacturer.

What maintenance is required for an infeed starwheel?

Regular inspection for wear on pockets, surface roughness, and alignment is recommended. Replace the starwheel if you notice excessive wear, cracking, or dimensional changes that could affect performance.

Data Basis

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

Preliminary Technical Classification

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pressure:	Atmospheric to 2 bar
other spec:	Max container throughput: 500 units/min, Max container weight: 5 kg
temperature:	-20°C to 120°C

Infeed Starwheel

Product Specifications

Applied To / Applications

Industrial Ecosystem & Supply Chain Structure

Application Fit & Sizing Matrix

Reliability & Engineering Risk Analysis

Compliance & Manufacturing Standards