Power screw drives convert rotary motion into linear motion for motion control and linear actuation applications. In simplest terms, lubrication is required to reduce friction, limit wear and extend service life. Lubricant selection is typically made from either wet lubricants, such as traditional greases and pastes, or dry lubricants. Dry film lubricants, also called anti-friction coatings, can be very beneficial to avoid contamination build up over time.