INDUSTRY COMPONENT

Shaft Hub

A shaft hub is a mechanical component that connects a rotating shaft to other machine elements like gears, pulleys, or couplings, ensuring torque transmission and alignment.

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Component Specifications

Definition
A shaft hub is a precision-engineered component designed to mount rotating elements onto a shaft. It serves as the interface between the shaft and attached components, providing secure fastening through methods such as keyways, splines, set screws, or interference fits. In rotor assemblies, the shaft hub specifically connects the rotor core to the drive shaft, maintaining concentricity and transmitting rotational forces while accommodating thermal expansion and mechanical stresses.
Working Principle
The shaft hub operates by creating a rigid mechanical connection between the shaft and mounted components. It transfers torque through shear forces in keyways or friction in interference fits, while maintaining radial and axial alignment. In rotor applications, it ensures the rotor rotates concentrically with the shaft, minimizing vibration and wear.
Materials
Typically manufactured from medium-carbon steel (e.g., AISI 1045, 4140) or alloy steels, often heat-treated to HRC 28-35 for strength. Corrosion-resistant applications may use stainless steel (304, 316) or aluminum alloys. Surface treatments include black oxide coating, zinc plating, or phosphating for wear and corrosion resistance.
Technical Parameters
  • Length 15-150 mm
  • Max RPM 300-6000
  • Hub Diameter 20-400 mm
  • Bore Diameter 10-200 mm
  • Tolerance Class IT6-IT8
  • Torque Capacity 50-5000 Nm
  • Keyway Standards ANSI B17.1, DIN 6885
Standards
ISO 286, DIN 6885, ANSI B17.1

Industry Taxonomies & Aliases

Commonly used trade names and technical identifiers for Shaft Hub.

shaft hub rotor component torque transmission mechanical coupling keyway industrial engineering power transmission Shaft Hub in Machinery and Equipment Manufacturing

Parent Products

This component is used in the following industrial products

Rotor

The rotating component of a position encoder/resolver that generates or modulates the signal used to determine angular position.

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Engineering Analysis

Risks & Mitigation
  • Misalignment causing vibration
  • Keyway wear leading to slippage
  • Fatigue failure under cyclic loads
  • Corrosion in harsh environments
FMEA Triads
Trigger: Improper installation or misalignment
Failure: Excessive vibration and premature bearing wear
Mitigation: Use precision alignment tools and follow torque specifications during assembly
Trigger: Insufficient lubrication or contamination
Failure: Increased friction and overheating
Mitigation: Implement regular maintenance schedules and use appropriate lubricants

Industrial Ecosystem

Compatible With

Interchangeable Parts

Compliance & Inspection

Tolerance
Bore diameter tolerance: H7/h6 fit per ISO 286, runout tolerance: 0.02-0.05 mm
Test Method
Dimensional inspection with CMM, torque testing per ISO 6789, dynamic balance testing per ISO 1940

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 is the primary function of a shaft hub in a rotor?

The shaft hub securely connects the rotor to the drive shaft, ensuring efficient torque transmission and maintaining precise alignment to prevent vibration and mechanical failure.

How do you select the right shaft hub material?

Material selection depends on load requirements, operating environment, and cost. Carbon steel is common for general use, alloy steel for high stress, stainless for corrosion resistance, and aluminum for lightweight applications.

Can I contact factories directly?

Yes, each factory profile provides direct contact information.

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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