Thread: X2 change balls crews or not?
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15-08-2011 #1
Hi, can anyone help, I have just bought a sx2 mill and I want too convert it but I'm unsure as to wether I can keep the original screws or I need to change them and if so which ball screws. Any help really appreciated thank you
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16-08-2011 #2
if you shop around i'm pretty sure you can get a kit of parts to convert these mills, and definately ballscrews.
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17-08-2011 #3
Thank you but I'm hoping to do this without a kit. From what I have seen it's possible to leave the original screws and attach them using lovejoy connectors, but this still leaves the problem of the Z axis and the length of the lead screw for that and the size of the stepper motors.
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17-08-2011 #4
things to consider on ballscrews over leadscrews are, better power transfer on a ballscrew, greater accuracy, zero backlash, trouble free maintenance.
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17-08-2011 #5
Also remember that ballscrews can backdrive (depending on the lead angle) which can make using the machine manually more difficult. You may have to lock the slides. I think it's worth considering as for simple parts it's sometimes easier just to do it manually...
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The Following User Says Thank You to Jonathan For This Useful Post:
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17-08-2011 #6
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17-08-2011 #7
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17-08-2011 #8
Thank you both for your input, a lot to think about. It's been over 30yrs since I used a mill or lathe manually and the learning curve seem a lot steeper now. Could I ask, Jonathan, how much accuracy do you think you have lost, if any, by using the lead screws? And did you lose any of the table range?
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