Shaft Hub: Torque Capacity 50-5000 Nm, Hub Diameter 20-400 mm

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

Parameter	Typical range	Notes & selection driver
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

Ranges are indicative industry figures for RFQ preparation, not a supplier commitment. Confirm every value and standard with the legal manufacturer before ordering.

Standards

ISO 286, DIN 6885, ANSI B17.1

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

Typical Suppliers & Equivalents

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

A practical evidence checklist for RFQ preparation and supplier evaluation.

Technical documentation

Request current drawings, revision history, and a signed specification sheet.

Manufacturing capability

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Inspection readiness

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Manufacturers of Shaft Hub

Manufacturer profiles associated with Shaft Hub.

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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.

Data Basis

Editorial classification, named public sources where available, and source-reviewed manufacturer records. See the editorial policy.

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.

Shaft Hub