Daily maintenance of ball screw pair

(1) Lubrication of ball screw pair
    Poor ball screw lubrication can cause errors in multiple feed motions of CNC machine tools at the same time. Therefore, ball screw lubrication is the main content of daily maintenance. The use of lubricant can improve the wear resistance and transmission efficiency of the ball screw. Lubricants can be divided into two categories: lubricating oil and grease.
   The lubricating oil is generally used in the total loss system, and the grease can be lithium-based grease. Grease is generally added to the threaded raceway and the housing space where the nut is installed, and the lubricating oil is injected into the space of the nut through the oil hole on the housing. Replace the grease on the ball screw every six months. Clean the old grease on the screw and apply new grease. The ball screw pair lubricated with lubricating oil can be refueled every time before the machine tool works.
(2) Periodic inspection of screw support bearings
    Regularly check whether the connection between the screw support and the bed is loose, whether the connecting piece is damaged, and the working status and lubrication status of the screw support bearing.
(3) Protection of ball screw pair
    The ball screw pair, like other rolling friction transmission devices, should avoid the entry of hard dust or chips and dirt. Therefore, it must be equipped with a protective device. If the ball screw pair is exposed on the machine tool, a closed protective cover should be used, such as a spiral spring steel belt casing, a telescopic casing, and a folding casing. When installing, connect one end of the protective cover to the side of the ball nut, and fix the other end to the support seat of the ball screw. If the ball screw pair is in a hidden position, it can be protected by a sealing ring, which is installed at both ends of the nut.
      The contact type elastic sealing ring is made of oil-resistant rubber or nylon, and its inner hole is made to match the shape of the screw thread raceway; the contact type sealing ring has a good dust-proof effect, but due to the contact pressure, the friction moment is slightly Increase. The non-contact sealing ring is also called the labyrinth sealing ring. It is made of hard plastic. Its inner hole has the opposite shape to the threaded raceway of the lead screw and has a slight gap. This can avoid frictional torque, but it has poor dust-proof effect. Avoid hitting the protective device during work, and replace the protective device in time if it is damaged.Ball Screw And Nut is your good choice.