INDUSTRY COMPONENT

Mounting Bore

A precisely machined bore in a forged gear blank designed for secure mounting and alignment in mechanical assemblies.

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Component Specifications

Definition
A mounting bore is a critical cylindrical feature machined into a precision forged gear blank, typically serving as the primary interface for attaching the gear to a shaft or hub. It ensures proper concentricity, torque transmission, and axial positioning within mechanical power transmission systems. The bore's dimensions, surface finish, and geometric tolerances are precisely controlled to maintain alignment with gear teeth and prevent operational issues like vibration or premature wear.
Working Principle
The mounting bore functions by providing a precise interference or clearance fit with a mating shaft, secured via mechanical fasteners (e.g., keys, splines, or set screws). It transfers rotational forces from the gear teeth to the shaft while maintaining radial and axial alignment through controlled tolerances and surface contact. In operation, it ensures minimal runout and balanced load distribution across the gear-shaft interface.
Materials
Typically matches the gear blank material: alloy steels (e.g., AISI 4140, 4340), carbon steels, or specialty alloys. Hardness ranges from 28-45 HRC post-heat treatment. Surface treatments may include nitriding or carburizing for wear resistance.
Technical Parameters
  • Depth As per gear width specifications
  • Roundness ≤ 0.01 mm
  • Concentricity ≤ 0.02 mm relative to pitch diameter
  • Surface Finish Ra 1.6 μm or better
  • Diameter Tolerance H7 or tighter
Standards
ISO 286, DIN 7154, ISO 1101

Industry Taxonomies & Aliases

Commonly used trade names and technical identifiers for Mounting Bore.

mounting bore gear blank bore precision machining shaft interface gear mounting industrial components tolerance standards Mounting Bore in Machinery and Equipment Manufacturing

Parent Products

This component is used in the following industrial products

Precision Forged Gear Blank

A near-net-shape forged metal blank designed for subsequent gear machining operations.

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Disc Cutters

Rotating disc-shaped cutting tools mounted on a cutterhead for slicing, dicing, or shredding materials.

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Engineering Analysis

Risks & Mitigation
  • Misalignment causing gear wear
  • Inadequate fit leading to slippage
  • Surface defects inducing stress concentrations
FMEA Triads
Trigger: Improper machining tolerances
Failure: Shaft misalignment and excessive vibration
Mitigation: Implement statistical process control (SPC) and regular gauge calibration
Trigger: Material fatigue or corrosion
Failure: Bore deformation or cracking under load
Mitigation: Use corrosion-resistant materials and apply protective coatings

Industrial Ecosystem

Compatible With

Interchangeable Parts

Compliance & Inspection

Tolerance
ISO 286 for dimensional tolerances, ISO 1101 for geometric tolerances
Test Method
Coordinate measuring machines (CMM), bore gauges, surface profilometers

Buyer Feedback

★★★★☆ 4.8 / 5.0 (20 reviews)

"Standard OEM quality for Machinery and Equipment Manufacturing applications. The Mounting Bore arrived with full certification."

"Great transparency on the Mounting Bore components. Essential for our Machinery and Equipment Manufacturing supply chain."

"The Mounting Bore we sourced perfectly fits our Machinery and Equipment Manufacturing production line requirements."

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Frequently Asked Questions

What is the primary function of a mounting bore in a gear blank?

It provides a precise interface for attaching the gear to a shaft, ensuring accurate alignment, torque transmission, and minimal vibration in mechanical systems.

How are mounting bores typically secured to shafts?

Common methods include keyways, splines, tapered fits, or set screws, chosen based on torque requirements and assembly/disassembly needs.

Can I contact factories directly?

Yes, each factory profile provides direct contact information.

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Mounting Adapter Mounting Flange