Skip to main content
SCHEMATICCURRENT · v1.0.0DIAG-PARTICLE-WEAR

Particle Wear Mechanisms in Lubricated Systems

Provides a mechanistic understanding of how particle contamination causes surface damage in lubricated systems. Two-body abrasion accounts for the deepest groove wear; three-body abrasion is the most common mode in hydraulic and lube systems where hard particles circulate freely. Adhesive wear occurs when the lubricant film breaks down (from oil degradation, water contamination, or overloading). All three mechanisms are accelerated by particles in the 0.5–5µm range relative to bearing clearance — the primary engineering argument for ≤6µm filtration efficiency ratings.

Particle Wear Mechanisms in Lubricated SystemsThree abrasive wear mechanisms: two-body abrasion (hard particle embedded in soft surface cutting harder counter-surface), three-body abrasion (free particle rolling between two surfaces), and adhesive wear (direct metal-to-metal contact from oil film breakdown). Particle sizes shown relative to bearing clearance (0.5–5µm critical range).TWO-BODY ABRASIONCOUNTER-SURFACE (moving)sliding →SOFT SURFACEhard particle← wear groove →gapParticle embedded in soft surfacecuts groove in opposing faceTHREE-BODY ABRASIONUPPER SURFACE (moving)LOWER SURFACEFree particles roll between surfaces,abrading both contact facesADHESIVE WEARSURFACE ASURFACE Bmetal contact(no oil film)Oil film breakdown causes directmetal contact and material transferCRITICAL PARTICLE SIZE RANGE RELATIVE TO BEARING CLEARANCEEngine bearings: 0.5–5µm clearance · Hydraulic servo valves: 0.5–2µm clearanceParticles ≥4µm(c) cause measurable wear in lube oil systems (ISO 4406 / ISO 16889)ISO 4406 · ISO 16889
Three panels separated by vertical dividers. Left panel (Two-Body Abrasion): upper surface moving right over lower surface, hard triangular particle embedded in lower surface creating a wear groove on upper surface. Centre panel (Three-Body Abrasion): free circular particles of varying sizes between two surfaces, causing simultaneous wear on both faces. Right panel (Adhesive Wear): direct metal contact zones shown as red-highlighted rectangles between surfaces where oil film is absent, with material transfer arrows. Bottom bar shows critical particle size range: engine bearings 0.5–5µm, servo valves 0.5–2µm, per ISO 4406.

GOVERNING STANDARDS

ISO 4406
ISO 16889

ELIMFILTERS TECHNOLOGIES

SYNTRAX™
NANOFORCE™
MACROCORE™

APPLICABLE SYSTEMS

Lubrication Protection
Hydraulic Protection

REVISION METADATA

Versionv1.0.0
Statuscurrent
Last Reviewed2026-07-08
Next Review2027-07-08

RELATED ENGINEERING ARTICLES

→Contamination Control
→Failure Analysis
→Filter Media Science
→Fluid Cleanliness

We use optional analytics providers, including GA4, PostHog, and Microsoft Clarity, to understand platform usage and improve our services. We do not sell personal information. See our Cookie Policy and Privacy Policy.