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Rolling friction and ball screw drive and other devices, like hard to avoid dust or dirt into the chips, so must be equipped with protective devices. If the ball screw exposed on the machine, you should use a closed protective cover, such as spring steel spiral tube, telescopic tube and folding casing. NSK Bearings Installation Connect one end of the enclosure side of the ball nut, and the other end is fixed on the ball screw bearing seat. If the ball screw in a secluded location, you can use protective seals, seals mounted on the ends of the nut. Contact elastic seal with oil and rubber or nylon, which made the hole with the screw thread to match the shape of the raceway; contact seals dust effect, but because of the contact pressure on the friction torque slightly increases. Also known as non-contact labyrinth seal ring, which uses made of hard plastic, the inner bore of the screw thread opposite raceway shape and a slight gap, so to avoid friction torque, but the dust-poor results. Work should be avoided crashing guards, guards a damaged should be replaced.
Lubricant can improve wear resistance and transmission efficiency. Oil and grease lubricants can be divided into two categories. Lubricating oil is generally total loss systems: lithium grease grease can be used. Grease generally added to the raceways and mounting nut threaded housing space, and lubricating oil is injected through the hole on the housing space of the nut. Every six months for replacement of grease on the ball and clean of old grease on the screw, apply new grease. Lubricated with a lubricating ball screw, machine work in each one before refueling.
| Product Model | Inside Diameter | Outside Diameter | Thickness |
| NU1016 NTN | 80 | 125 | 22 |
| NU415 NTN | 75 | 190 | 45 |