Finish Line Bicycle Lubricants and Care ProductsCeramic Grease How To Stop A Squeaky Door Hinge In 4 Steps WD 40 Australia How to Oil Door Hinges: Best Lubricants & How to Apply Them Core Bearing Lube 15ML Thisissoul You replaced the bearing. Six months later, it failed again. Here's why. Bearing failure, gearbox breakdown, shaft seizure get logged as mechanical problems. But in many cases, the component isn't the cause.