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"DN value" of the THK Ball screw

The DN value is a value to determine whether the parts which compose the ball circulating component can be used without damage.


DN value > BCD (ball center-to-center diameter) x N (rotational speed per minute)


If you use a ball screw, be sure not to exceed the allowable DN value set for each Model No.


For the allowable DN value, see THK general catalog.


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