Structured Manufacturing Data (2026)

Hub

Based on aggregated insights from structured factory profiles within the CNFX directory, the standard Hub 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 is characterized by the integration of Keyway and Blade Mounting Flanges. In industrial production environments, manufacturers listed on CNFX commonly emphasize Stainless Steel (e.g., 304, 316) construction to support stable, high-cycle operation across diverse manufacturing scenarios.

The central mounting component of a mixing impeller that connects the blades to the drive shaft.

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Product Specifications

Technical details and manufacturing context for Hub

Definition
In a mixing impeller, the hub is the central structural component that serves as the mounting point for the blades. It provides the mechanical interface between the rotating blades and the drive shaft, transmitting torque from the shaft to the blades while maintaining proper blade alignment and spacing. The hub's design directly affects the impeller's balance, vibration characteristics, and overall structural integrity during operation.
Working Principle
The hub is fixed to the drive shaft (typically via a keyway, spline, or clamping mechanism). When the shaft rotates, torque is transferred through the hub to the attached blades, causing them to rotate and impart motion to the fluid. The hub must withstand centrifugal forces from the rotating blades, shear stresses from torque transmission, and bending moments from fluid resistance.
Common Materials
Stainless Steel (e.g., 304, 316), Carbon Steel, Cast Iron, Aluminum Alloy
Technical Parameters
  • Bore diameter (shaft diameter compatibility) (mm) Customizable
Components / BOM
  • Keyway Part
    Prevents rotational slippage between hub and shaft by engaging with a key
    Material: Same as hub material
  • Blade Mounting Flanges Part
    Provide attachment surfaces or slots for securing impeller blades
    Material: Same as hub material
  • Set Screw Holes Part
    Allow installation of set screws for additional shaft securing
    Material: Same as hub material

Industry Taxonomies & Aliases

Commonly used trade names and technical identifiers for Hub.

stainless steel mixing impeller hub industrial impeller hub with keyway machinery equipment hub BOM carbon steel impeller mounting component custom mixing hub blade flanges

Applied To / Applications

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

Mixing Impeller
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Paddle Wheel
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Drive Pulley/Sprocket
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Star Wheel
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Drum or Sheave
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Impeller/Fan
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Head Pulley/Sprocket
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Sprockets/Gears
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Shaft Coupling
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Coupling / Drive Mechanism
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Industrial Ecosystem & Supply Chain Structure

Complementary Systems
Downstream Applications
Specialized Tooling

Application Fit & Sizing Matrix

Operational Limits
pressure: Up to 10 bar
flow rate: Dependent on impeller design
temperature: -40°C to 150°C
slurry concentration: Up to 60% solids by weight
Media Compatibility
✓ Water-based solutions ✓ Chemical slurries ✓ Food-grade media
Unsuitable: Highly corrosive acids (e.g., hydrofluoric acid)
Sizing Data Required
  • Shaft diameter
  • Impeller torque requirement
  • Operating RPM

Reliability & Engineering Risk Analysis

Failure Mode & Root Cause
Bearing fatigue failure
Cause: Cyclic loading beyond design limits leading to subsurface crack propagation and eventual spalling
Shaft-hub interface fretting corrosion
Cause: Micro-motion between mating surfaces under load, combined with environmental contaminants, causing material degradation and loss of interference fit
Maintenance Indicators
  • Abnormal high-frequency vibration or audible whining during operation
  • Visible discoloration (blueing) or heat haze around hub body indicating overheating
Engineering Tips
  • Implement precision laser alignment during installation and periodic verification to minimize parasitic loads on hub bearings
  • Establish controlled torque procedures for fasteners and use thread-locking compounds to maintain proper preload and prevent interface loosening

Compliance & Manufacturing Standards

Reference Standards
ISO 9001:2015 (Quality Management Systems) ANSI/ASME B18.2.2 (Square and Hex Nuts and Bolts) DIN 6325 (Parallel Keys and Keyways)
Manufacturing Precision
  • Bore Diameter: +/-0.025 mm
  • Hub Flange Flatness: 0.05 mm
Quality Inspection
  • Dimensional Verification (CMM)
  • Hardness Testing (Rockwell C Scale)

Factories Producing Hub

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.

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 mixing impeller hub?

Our hubs are manufactured in Stainless Steel (304, 316 grades), Carbon Steel, Cast Iron, and Aluminum Alloy to suit various industrial applications and corrosion resistance needs.

How does the hub connect to the drive shaft?

The hub features a keyway for secure shaft connection, blade mounting flanges for attaching impeller blades, and set screw holes for additional fastening stability in mixing equipment.

What industries use this type of impeller hub?

This central mounting component is essential for machinery and equipment manufacturing, particularly in mixing, blending, and agitation systems across chemical, pharmaceutical, food processing, and wastewater treatment industries.

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 for Machinery and Equipment Manufacturing.

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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