All steel moving parts require lubrication at points of contact.  The need to lubricate your wheel flanges is the same as the need to lubricate your auto or truck engine.  The RPM is much lower, but the wear can be catastrophic and extremely expensive. In today's competitive environment, it doesn't matter how fast you can get equipment back in service. It matters that you don't go down, period. The Trans-Lube lubrication system has been proven to dramatically reduce flange wheel failures, and keep your equipment up and running.