Industry-Verified Manufacturing Data (2026)

Hub Assembly

Based on aggregated insights from multiple verified 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.

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
    Main structural element providing mounting surfaces and rotational mass
    Material: steel
  • Mounting Flange
    Interface for attaching starwheel arms with precision alignment
    Material: steel
  • Bearing Surface
    Precision-machined surface for smooth rotation and load distribution
    Material: hardened steel
  • Keyway/Spline
    Mechanical feature for positive drive connection to shaft
    Material: steel
Engineering Reasoning
0-1200 rpm at 20-80°C ambient temperature
Exceeds 1500 rpm rotational speed or operates below -10°C causing lubricant solidification
Design Rationale: Brinelling fatigue from Hertzian contact stress exceeding 2.1 GPa at ball-raceway interfaces during over-speed conditions
Risk Mitigation (FMEA)
Trigger Radial misalignment exceeding 0.05 mm between hub bore and drive shaft
Mode: Eccentric wobble inducing 15-25 Hz vibration harmonics
Strategy: Interference fit with H7/p6 tolerance pairing and dual-keyway positive drive coupling
Trigger Insufficient NLGI Grade 2 lithium-complex grease replenishment beyond 2000 operating hours
Mode: Dry-running bearing seizure at 80-100°C operating temperature
Strategy: Automatic lubrication system with 0.5 cc/hour metered injection and thermal sensors at 70°C cutoff

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:

Industrial Ecosystem & Supply Chain DNA

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

Verified manufacturers with capability to produce this product in China

✓ 98% Supplier Capability Match Found

S Sourcing Manager from Singapore Feb 01, 2026
★★★★★
"The technical documentation for this Hub Assembly is very thorough, especially regarding technical reliability."
Technical Specifications Verified
P Procurement Specialist from Germany Jan 29, 2026
★★★★☆
"Reliable performance in harsh Machinery and Equipment Manufacturing environments. No issues with the Hub Assembly so far. (Delivery took slightly longer than expected, but technical support was excellent.)"
Technical Specifications Verified
T Technical Director from Brazil Jan 26, 2026
★★★★★
"Testing the Hub Assembly now; the technical reliability results are within 1% of the laboratory datasheet."
Technical Specifications Verified
Verification Protocol

“Feedback is collected from verified sourcing managers during RFQ (Request for Quote) and factory evaluation processes on CNFX. These reports represent historical performance data and technical audit summaries from our B2B manufacturing network.”

7 sourcing managers are analyzing this specification now. Last inquiry for Hub Assembly from Mexico (1h ago).

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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.

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