Linear axes in CNC and machine tools - consisting of linear guides and screw drives - are complex, highly engineered, and balanced system that make our lives easier when they are maintained properly, and turn into nightmares when they are serviced incorrectly. The symptoms are nearly endless:
Nothing can said to be certain, except for death, taxes, and bearing failure. If these certainties cannot be avoided, we can at least try to understand them. While taxes and, most certainly, death are outside the scope of this blog, we do dive into and explore common failure modes of rolling bearings.
Industrial bearing part number codes can range from the basic - every manufacturer offers a 6205 open deep groove ball bearing - to the downright mind numbing - take example a SKF BT2B 332506/HA2 two row tapered roller bearing. Manufacturers, distributors, aggregators, and end users have a range of resources available to identify bearings by their part numbers.
6210, 22220, ECP, TVP2, MA, #E, F-212505, LM11949-LM11910, VA405, UCP212D1. Do any of these ring a bell? They represent some of the most popular bearing part number components from the world’s largest bearing companies. They’re always changing, so how can you keep up? Follow these 6 simple tips for knowing what you’re working with: