Structured Manufacturing Data (2026)

Hub Assembly

Based on aggregated insights from structured factory profiles within the CNFX directory, the standard Hub Assembly used in the Machinery and Equipment Manufacturing sector typically supports operational capacities ranging from standard industrial configurations to heavy-duty production requirements.

Technical Definition & Core Assembly

A canonical Hub Assembly is characterized by the integration of Hub Body and Mounting Flange. In industrial production environments, manufacturers listed on CNFX commonly emphasize Carbon Steel construction to support stable, high-cycle operation across diverse manufacturing scenarios.

The central rotating component of an infeed starwheel that provides mounting points for starwheel arms and facilitates smooth rotation.

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Product Specifications

Technical details and manufacturing context for Hub Assembly

Definition

A hub assembly is the core mechanical component of an infeed starwheel system, serving as the central rotating element that connects to the drive mechanism. It provides precise mounting interfaces for starwheel arms or fingers, ensuring accurate positioning and synchronized movement of containers or products during the infeed process. The hub assembly maintains structural integrity while transmitting rotational force from the drive system to the starwheel assembly.

Working Principle

The hub assembly rotates around a central axis driven by a motor or gear system. As it rotates, the mounted starwheel arms or fingers engage with containers or products, guiding them from the infeed conveyor into the processing or packaging line with precise timing and positioning. The hub's design ensures minimal vibration and consistent rotational speed for reliable product handling.

Common Materials

Carbon Steel, Stainless Steel, Alloy Steel

Technical Parameters

Hub diameter, mounting hole pattern, and overall dimensions critical for compatibility with starwheel arms and drive systems (mm) Standard Spec

Components / BOM

Hub Body Part
Main structural element providing mounting surfaces and rotational mass

Material: steel
Mounting Flange Part
Interface for attaching starwheel arms with precision alignment

Material: steel
Bearing Surface Part
Precision-machined surface for smooth rotation and load distribution

Material: hardened steel
Keyway/Spline Part
Mechanical feature for positive drive connection to shaft

Material: steel

Industry Taxonomies & Aliases

Commonly used trade names and technical identifiers for Hub Assembly.

Applied To / Applications

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

Infeed Starwheel

View system integration details

Industrial Ecosystem & Supply Chain Structure

Complementary Systems

Downstream Applications

Specialized Tooling

Application Fit & Sizing Matrix

Operational Limits

pressure:	0 to 10 bar
other spec:	Max rotational speed: 60 RPM, Max slurry concentration: 40% solids by weight
temperature:	-20°C to 120°C

Media Compatibility

✓ Food-grade liquids ✓ Pharmaceutical suspensions ✓ Aqueous chemical solutions

Unsuitable: Highly abrasive slurries with sharp particulates

Sizing Data Required

Shaft diameter of drive mechanism
Number of starwheel arms required
Maximum torque load from starwheel arms

Reliability & Engineering Risk Analysis

Failure Mode & Root Cause

Bearing fatigue and spalling

Cause: Cyclic loading beyond design limits, improper preload, or contamination ingress leading to surface degradation and material fatigue

Shaft-hub interface fretting corrosion

Cause: Micro-motion between mating surfaces due to insufficient interference fit, vibration, or thermal cycling, causing oxidative wear and loss of torque transmission

Maintenance Indicators

Abnormal audible grinding or rumbling during rotation, indicating bearing degradation or misalignment
Excessive radial play or axial movement when manually checking the hub, suggesting bearing wear or loose fasteners

Engineering Tips

Implement precision alignment during installation using laser alignment tools and verify interference fits per manufacturer specifications to minimize parasitic loads
Establish a proactive lubrication regimen with condition-based monitoring, using the correct grease type and quantity while preventing contamination through sealed systems

Compliance & Manufacturing Standards

Reference Standards

ISO 9001:2015 - Quality Management Systems ANSI/AGMA 2000-A88 - Gear Classification and Inspection Handbook DIN 743-2:2012 - Calculation of load capacity of shafts and axles

Manufacturing Precision

Bore diameter: +/-0.025mm
Runout tolerance: 0.05mm TIR

Quality Inspection

Dimensional verification with CMM (Coordinate Measuring Machine)
Hardness testing (Rockwell C scale)

Factories Producing Hub Assembly

Manufacturer profiles with relevant production capability in China

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Manufacturer listings support early research and capability understanding. They are not certification, ranking, or transaction guarantees.

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 materials are available for the hub assembly?

Our hub assemblies are manufactured in carbon steel, stainless steel, and alloy steel to meet various industrial requirements for strength, corrosion resistance, and durability.

What are the key components of the hub assembly?

The hub assembly consists of four main components: the hub body, mounting flange, bearing surface, and keyway/spline interface, ensuring precise mounting and smooth rotation for starwheel arms.

How does the hub assembly improve starwheel performance?

The hub assembly serves as the central rotating component, providing stable mounting points for starwheel arms and facilitating smooth, consistent rotation to enhance material handling efficiency in machinery applications.

Can I contact factories directly on CNFX?

CNFX is an open directory, not a transaction platform. Each factory profile provides direct contact information and production details to help you initiate direct inquiries with Chinese suppliers.

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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