The usual specifications for lubricating ball bearings also apply to ball screws. However, lifetime lubrication applied only once is not sufficient in most cases. Regular lubrication is required to extend the service life of the ball screw.
When shipped, screws simply have a protective film. Before mounting or operating the ball screw, units must be lubricated with the proper lubricant (through the lube hole for nuts with wipers; directly onto the screw for nuts without wipers).
Klüber Microlube GBU Y 131
When using another lubricant, please verify compatibility with anticorrosion agent and eventually rinse unit prior to lubrication.
Caution: Do not use grease containing graphite or MoS.