Whitemetal bearing undergoing failure inspection

Whitemetal Bearing Failure Analysis

Compare common damage patterns, investigate the operating conditions behind them and move from visible evidence to root cause.

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Damage Is Evidence, Not the Complete Diagnosis

Whitemetal bearings are often the first components to record a lubrication, alignment, loading or electrical problem. The visible pattern can narrow the investigation, but several mechanisms may act together. Reliable diagnosis combines bearing inspection with operating history, oil-system data, vibration, shaft condition and machine geometry.

Damage Index

Common Bearing Failure Modes

Select the closest visible pattern for signs, contributing factors, inspection steps and corrective actions.

Fatigue cracking and material loss in a whitemetal bearing lining

Fatigue

Cyclic loading, vibration and high temperature can initiate cracks and lead to lining pullout.

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Wiped whitemetal bearing caused by oil starvation

Oil Starvation & Wiping

Interrupted or inadequate lubrication can collapse the oil film, causing rubbing, smearing and melting.

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Black scab and wire wool damage on a whitemetal bearing

Wire Wool & Black Scab

Embedded hard particles can machine the shaft and generate wire-like metallic debris.

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Contamination scoring across a whitemetal bearing surface

Contamination & Scoring

Dirt or metallic debris in the lubricant can score the lining and damage the mating surface.

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Uneven whitemetal bearing damage caused by misalignment

Misalignment

Geometric or operational misalignment concentrates load and temperature at an edge or end of the bearing.

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Electrical discharge pitting in a whitemetal bearing lining

Electrical Discharge

Stray current or shaft magnetism can produce pitting, frosting or spark tracks across the bearing surface.

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Investigation Method

Confirm the Root Cause

1. Preserve the Evidence

Record bearing position, orientation, damage distribution and mating-surface condition before cleaning or repair. Retain oil, filter and debris samples where useful.

2. Review Machine Data

Correlate the pattern with load, speed, temperature, pressure, flow, vibration, alarms, trips and recent maintenance or process changes.

3. Test the Mechanism

Inspect clearances, alignment, shaft geometry, lubrication paths, material and bond condition to confirm or eliminate each credible failure mechanism.

Library Roadmap

Further Failure Guides in Development

Cavitation erosionPlanned
Corrosion and hydrogen sulphide attackPlanned
Lacquering and oil varnishPlanned
Lining extrusion, creep and crackingPlanned
Pivot wear and pivot fatiguePlanned
Bore distortion and uneven wearPlanned

Experienced a Bearing Failure?

Send photographs, operating data and failure history for an initial assessment and recommended next steps.

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