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IndustryArena Forum > CNC Electronics > Spindles / VFD > er20 spindle recomendation
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  1. #1
    Join Date
    Oct 2015
    Posts
    24

    er20 spindle recomendation

    I am looking for a er20 spindle and vfd for a mill
    I will be milling .25" titanium and engraving and hardened steels {1095, 145cpm,s35vn}
    Would this spindle be able to do this?
    Four Bearing ER20 3KW Air Cooled Spindle Motor Engraving Milling Grind | eBay

  2. #2
    Join Date
    Apr 2004
    Posts
    5728

    Re: er20 spindle recomendation

    It would probably work pretty well for the engraving part of your workflow, but it's a high-speed (18k rpm) spindle. For the hard materials you're talking about milling, you want something that has a lot of torque at low speeds. You can't run a spindle like that at much less than half its top speed, or it won't have any torque. Check a speed-feed chart for the recommended RPMs used for cutting titanium or hardened steel with the tools you have in mind, and look for something that will go that speed without bogging down.
    Andrew Werby
    Website

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