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Mounting Hub/Bore Component – Machinery and Equipment Manufacturing

Component Specifications

Definition

A mounting hub/bore is a cylindrical mechanical interface component designed to connect rotating cam elements to shafts or other driven components in cam mechanisms. It features precise internal bore dimensions for shaft fitting and external hub geometry for cam attachment, ensuring accurate torque transmission and rotational alignment while maintaining structural integrity under cyclic loading conditions.

Working Principle

The mounting hub/bore operates on mechanical interference and friction principles, where the bore creates a press-fit or keyed connection with the shaft, while the hub provides mounting surfaces for cam elements. This dual-interface design ensures synchronized rotation between cam and shaft, transmitting motion and force while maintaining precise angular positioning through geometric constraints and surface contact mechanics.

Materials

Typically manufactured from alloy steels (AISI 4140, 4340), stainless steels (304, 316), or aluminum alloys (6061-T6) with hardness ranging from 28-45 HRC for steel components. Surface treatments may include nitriding, carburizing, or chrome plating for wear resistance.

Technical Parameters

Length 15-120 mm
Hub Diameter 20-150 mm
Bore Diameter 10-100 mm
Concentricity 0.01-0.05 mm
Surface Finish Ra 0.8-3.2 μm
Tolerance Class IT6-IT7
Runout Tolerance 0.02-0.1 mm

Standards

ISO 286, DIN 7154, ISO 1101, DIN 7184

Industry Taxonomies & Aliases

Commonly used trade names and technical identifiers for Mounting Hub/Bore.

Parent Products

This component is used in the following industrial products

Cam Mechanism

A mechanical component that converts rotational motion into linear motion or vice versa within a locking system.

View Product Details

Engineering Analysis

Risks & Mitigation

Concentricity deviation causing vibration
Fatigue failure from cyclic loading
Wear at bore-shaft interface
Improper fit leading to slippage
Corrosion in harsh environments

FMEA Triads

Trigger: Inadequate interference fit or improper installation
Failure: Slippage between hub and shaft leading to timing errors
Mitigation: Implement precise tolerance control, use proper installation tools, and verify fit with go/no-go gauges

Trigger: Material fatigue from cyclic loading
Failure: Crack propagation leading to catastrophic failure
Mitigation: Use fatigue-resistant materials, apply surface treatments, and implement regular inspection protocols

Trigger: Misalignment during assembly
Failure: Excessive vibration and premature bearing wear
Mitigation: Use alignment tools during installation, verify runout tolerances, and implement precision assembly procedures

Industrial Ecosystem

Compatible With

Interchangeable Parts

Compliance & Inspection

Tolerance

Geometric tolerances per ISO 1101, dimensional tolerances per ISO 286 IT6-IT7, surface finish Ra 0.8-3.2 μm

Test Method

Coordinate measuring machine (CMM) verification, surface roughness testing, hardness testing, runout measurement with dial indicators, ultrasonic testing for material defects

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 mounting hub/bore in cam mechanisms?

The mounting hub/bore serves as the critical interface that securely connects cam elements to rotating shafts, ensuring precise torque transmission, accurate angular positioning, and synchronized motion between cam and driven components while maintaining structural integrity under operational loads.

How are mounting hubs/bores typically secured to shafts?

Mounting hubs/bores are secured using interference fits (press fits), keyways with keys, splined connections, or clamping mechanisms. The selection depends on torque requirements, disassembly frequency, and precision needs, with interference fits providing the highest concentricity for precision 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.

Mounting Hub/Bore