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The nominal diameter of ball screws for CNC machines indicates which of the following options?

(A) Lead screw diameter

(B) Lead screw path

(C) Ball diameter

(D) The diameter at which the center of the ball is located

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Answer: (D) The diameter at which the center of the ball is located

Question Answer Analysis:

The nominal diameter of the ball screw used in CNC machine tools refers to the diameter where the ball center is located, and the common specifications are 12, 14, 16, 20, 25, 32, 40, 50, 63, 80, etc.

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