Shapeoko 5 pro ball screw maintenance

[1996jayhawk (Brad Hart)]

Some good info/links here:

5Pro Lube Advice

Got all the bearing assemblies lubed as shown in several places on the web and here. However hit a wall when finding specifics about what to do with the screw drives. Besides putting grease on the screws that move the gantry and HDZ, is there anything else I should be doing? I have noticed it is starting to make a high pitched noise when going corner to corner that did not occur when I got it a year ago. Not sure if that’s a lube issue or just how it sounds. No issues with cut accurac…