Contents 13.1 Introduction 13.2 Bearing design 13.2.1 Wall thickness 13.2.2 Interference fit 13.2.3 Locating tangs 13.2.4 Free spread 13.2.5 Loading on crankpin and main bearing 13.2.6 Prediction of oil film thickness 13.2.7 Grooving configuration 13.2.8 Clearance 13.3 Bearing damage 13.3.1 Abrasion 13.3.2 Fatigue 13.3.3 Corrosion 13.3.4 Wiping 13.3.5 Cavitation 13.3.6 Fretting 13.3.7 Design faults 13.3.8 Incorrect assembly 13.3.9 Environmental factors 13.3.10 Geometric factors 13.4 Slow-speed engine crosshead bearings 13.5 Bearing metals 13.5.1 Fatigue strength 13.5.2 Scuff resistance 13.5.3 Wear resistance 13.5.4 Cavitation erosion resistance 13.5.5 Overlays 13.5.6 White metals 13.5.7 Copper-lead and lead-bronze alloys 13.5.8 Aluminium-tin alloys 13.5.9 Aluminium-silicon alloys References 21761_13