Coby requires only minimal maintenance. The FANUC robots we use don't need any maintenance at all during the first 8 years! After those 8 years, Coby's oil will need to be changed by a FANUC technician. More information about this can be found in Coby's operating manual, provided to you on a USB drive. We also recommend that you change Coby's batteries every year. You can order the batteries in our webshop.