INDUSTRY COMPONENT

Eccentric Bushing

An eccentric bushing is a mechanical component used to adjust the center distance between rotating shafts in machinery assemblies.

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Component Specifications

Definition
An eccentric bushing is a cylindrical sleeve with an off-center bore relative to its outer diameter, designed to be installed in housings or assemblies to create precise radial offset adjustments. It functions as an interface between rotating shafts and their supports, allowing controlled displacement for alignment, tensioning, or timing purposes in mechanical systems.
Working Principle
The eccentric bushing operates by rotating within its housing to change the effective center position of the shaft it supports. When rotated, the offset bore causes the shaft to move radially, adjusting the distance between centers of connected components. This adjustment capability enables precise control over gear meshing, belt/pulley alignment, and chain tensioning without requiring complete disassembly.
Materials
Typically manufactured from bearing-grade steel (AISI 52100/100Cr6), case-hardened steel, or bronze alloys (C93200/SAE 660) for wear resistance and load-bearing capacity. Surface treatments may include hardening (HRC 58-62), chrome plating, or phosphating for corrosion protection.
Technical Parameters
  • Length 15-150 mm
  • Eccentricity 0.5-5 mm
  • Bore Diameter 10-150 mm
  • Load Capacity Dynamic: 5-50 kN, Static: 10-100 kN
  • Outer Diameter 20-200 mm
  • Operating Temperature -20°C to +120°C
Standards
ISO 286-2, DIN 1494, ISO 2768-mK

Industry Taxonomies & Aliases

Commonly used trade names and technical identifiers for Eccentric Bushing.

eccentric bushing shaft alignment component mechanical adjustment bushing power transmission parts industrial bushings machinery components Eccentric Bushing in Machinery and Equipment Manufacturing

Parent Products

This component is used in the following industrial products

Eccentric Assembly

The rotating mechanism that generates the crushing motion in a cone crusher

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Engineering Analysis

Risks & Mitigation
  • Misalignment causing premature wear
  • Insufficient locking leading to positional drift
  • Material fatigue under cyclic loading
  • Corrosion in harsh environments
FMEA Triads
Trigger: Inadequate lubrication
Failure: Increased friction and wear, leading to binding or seizure
Mitigation: Implement regular lubrication schedule using appropriate greases; install automatic lubrication systems for critical applications
Trigger: Improper installation torque on locking screws
Failure: Bushing rotation during operation, causing loss of alignment
Mitigation: Use torque wrenches during installation; implement regular torque checks in maintenance schedules
Trigger: Excessive radial loads beyond design limits
Failure: Bushing deformation or fracture, leading to catastrophic failure
Mitigation: Implement load monitoring systems; use overload protection devices; select bushings with appropriate safety factors

Industrial Ecosystem

Compatible With

Interchangeable Parts

Compliance & Inspection

Tolerance
H7/h6 fit for bore/housing, concentricity tolerance: 0.01-0.05 mm TIR, surface finish: Ra 0.8-1.6 μm
Test Method
Dimensional verification per ISO 1101, hardness testing per ISO 6508, radial load testing per ISO 76, corrosion resistance per ASTM B117

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 an eccentric bushing?

The primary function is to provide adjustable radial displacement for shafts, enabling precise alignment, tension control, and center distance adjustment in mechanical assemblies without complete disassembly.

How do you install and adjust an eccentric bushing?

Install by fitting into the housing bore, then rotate the bushing using adjustment slots or holes to achieve desired shaft position. Lock in place with set screws or clamping mechanisms after alignment.

What maintenance do eccentric bushings require?

Regular inspection for wear, lubrication of rotating surfaces, and checking of locking mechanisms. Replacement when wear exceeds manufacturer tolerances or when adjustment range becomes insufficient.

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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