Mod 6 - Bearings & Lube

Module from the Rotating Equipment Training Curriculum curriculum.

BEARINGS & LUBRICATION · Learning Objectives · 1. Select bearing type (journal, tilting pad, rolling element) for application 2. Understand lubrication methods and oil selection 3. Monitor bearing condition through temperature and vibration 4. Diagnose common bearing failures · Bearing Type Comparison

Bearing Type	Load Type	Speed Range	Temperature Limit	Lubrication	Best Application	Failure Indicator
Plain Journal (sleeve)	Radial	Medium-High	250°F (babbitt)	Flooded oil film (hydrodynamic)	Large turbines, compressors, generators	Temperature rise, oil debris, vibration sub-synchronous
Tilting Pad Journal	Radial	High	300°F	Flooded oil film	High-speed compressors, turbines (eliminates oil whirl)	Pad temperature, proximity probe vibration
Tilting Pad Thrust	Axial	High	300°F	Flooded oil film	Compressors, turbines (axial thrust control)	Axial position, pad temperature
Deep Groove Ball	Radial + Axial	Very High	250°F (grease) / 300°F (oil)	Grease or oil	Pumps, motors, general machinery	Vibration (high-frequency envelope), temperature
Cylindrical Roller	High Radial	High	250°F	Grease or oil	Gearboxes, heavy radial loads	Vibration, temperature, oil analysis
Tapered Roller	Radial + Axial (combined)	Moderate	250°F	Oil	Gearboxes, heavy combined loads	Wear metals in oil, vibration, preload change
Spherical Roller	Heavy Radial + Misalignment	Moderate	250°F	Oil or grease	Heavy-duty slow-speed, misalignment-tolerant	Vibration, temperature, grease analysis
Source: FOS Chief Files — Oil Mist Lubricant Systems.doc, Flinger Type Gear Lubrication.doc, IPE-EP-6-1-1, IPE-EP-6-2-1

Source: Rotating_Equipment_Training_Curriculum_v1.xlsx · Sheet: Mod 6 - Bearings & Lube

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