Ball screw conundrum

edelsailor · Aug 2, 2018

Why is it so difficult to find a 3/8" diameter ball screw with a 0.050" lead? I can find acme screws all day long in this configuration.

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adama · Aug 2, 2018

edelsailor said:
Why is it so difficult to find a 3/8" diameter ball screw with a 0.050" lead? I can find acme screws all day long in this configuration.

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Because it would only have circa 30 thou balls hence be a real pig to make work. Equally most people use ball screws to get coarser not finer pitches.

johansen · Aug 2, 2018

I bought three 8mm diameter ground ball screws with 3 mm lead used on ebay for $50. from what i can tell you can get 6mm diameter and 2mm lead but that's as small as they get. i have never seen 6mm diameter 2mm lead screws on ebay so you would have to buy them new from the manufacturer.. not going to be cheap.

adama · Aug 2, 2018

Yeah theres also the whole imperial metric thing, these days imperial ball-screws are rare, certainly not std at all and probably account for single digit percentages of global ball-screw production. So you also have that against you.

DDoug · Aug 2, 2018

https://www.practicalmachinist.com/...inform-what-your-topic-actually-about-307648/

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Ball screw conundrum

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