I have a haas st-30Y with both axial and radial Live tooling, the 2 axial live tools seem to generate a lot of heat. so much to the point one has already seized and destroyed the bearings inside. we rebuilt it and have been regularly pulling the inspection plates and packing them with grease. however it seems coolant is getting inside them, and they are over heating anyways. I haven't found any information on what I can do to prevent these failures. they are Exsys Eppinger preci-flex. I know they are rated for 5000 RPM but ive been running them at 4k or under. does anyone have any insight they could share so I can avoid this problem moving forward? please and thank you.