• Low Noise
• Maintenance free for long periods
• Low torque fluctuation
• DN value 130,000

 

 

 

Structure

A high-speed ball screw with a ball cage SBN is provided with a ball cage between the balls in order to eliminate collisions and frictions between balls and improve lubrication longevity. By doing this, low noise, excellent torque characteristics and long periods without maintenance were implemented.

As a result of increasing the strength of circulating part by making an ideal cycle which can pick up the ball at a direction tangential with the return pipe, permissible DN values of 130,000 were realized. (DN value = ball center diameter x number of rotations per minute)

An offset pre-load method that shifts the lead at the center of the nut is used. By this method, the overall nut length is shorter and more compact compared to the double nut type of the shim pre-load method.

The lubricator QZ for the ball screw which was developed to bring about longer maintenance-free periods and the wiper ring are also standardized to prevent foreign matter from penetrating inside the ball screw nut even under adverse environments.

 

 

 

SBN Dimensinal Chart