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IndustryArena Forum > Mechanical Engineering > Linear and Rotary Motion > RM1605 and SFU1605 whats the difference???

Thread: RM1605 and SFU1605 whats the difference???

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  1. 03-24-2014, 12:47 PM #1
    boydage
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    RM1605 and SFU1605 whats the difference???

    Crazy question but can someone shed some light please?
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  2. 03-24-2014, 04:48 PM #2
    tahustvedt
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    Re: RM1605 and SFU1605 whats the difference???

    Not 100% sure abour RM, but I think RM is the screw. SFM is single ball nut, as opposed to DFU, which is a dual ball nut.
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  3. 03-27-2014, 07:18 AM #3
    boydage
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    Re: RM1605 and SFU1605 whats the difference???

    Hmmm. I was hoping you would be saying the difference is between the screws? On Ebay there is RM1605 and SFU1605 for sale. Both screws. Perhaps one is a different pitch?
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  4. 03-27-2014, 01:46 PM #4
    bill south
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    Re: RM1605 and SFU1605 whats the difference???

    I always thought that 16 was the od and 05 was the pitch! I may be wrong (again).
    Bill
    billyjack
    Helicopter def. = Bunch of spare parts flying in close formation! USAF 1974 ;>)
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  5. 03-27-2014, 04:53 PM #5
    tahustvedt
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    Re: RM1605 and SFU1605 whats the difference???

    Yes. 16 is the diameter, and 05 is the pitch.
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  6. 03-27-2014, 11:26 PM #6
    boydage
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    Re: RM1605 and SFU1605 whats the difference???

    Hi. Yes. Hey but I was more interested in the RM and SFU?
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  7. 04-06-2014, 12:16 PM #7
    RCaffin
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    Re: RM1605 and SFU1605 whats the difference???

    RM: Rolled screw
    SFU: Single ball nut
    DFU: Double ball nut

    Cheers
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  8. 04-06-2014, 12:31 PM #8
    gio666
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    Re: RM1605 and SFU1605 whats the difference???

    Quote Originally Posted by boydage View Post
    Crazy question but can someone shed some light please?
    16 is od and 5mm is pitch, Travels 5mm each rotation of ballscrew. RM- is just a number they use , SFU is mostly a number used by Taiwan ballscrews. But a Taiwan ballnut will not have round plastic dots on ballnut for the lane changer. You will see China ballscrews now using SFU to charge more money
    XZero cnc
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