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  1. #1
    Hi All
    Now I’m brand new to milling and I purchased the Amadeal VM25L R8 mill. It’s brand new and unused but I’ve had it for some months. When I finally got around to testing the spindle sounded terrible.

    Does it need running in, oiling or is it a bad bearing? How can I resolve this ?

    Looking forward to your replies. Please see Vid.




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    Last edited by Lee Roberts; 30-10-2022 at 06:07 PM. Reason: Added Vid

  2. #2
    Hi and welcome to the forum!

    It sounds like a bearing problem to me, is there anyway to adjust the preload on them to check?

    What has Amadeal said?
    .Me

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  4. #3
    Quote Originally Posted by Lee Roberts View Post
    Hi and welcome to the forum!

    It sounds like a bearing problem to me, is there anyway to adjust the preload on them to check?

    What has Amadeal said?
    Hi Lee and many thanks.

    Iíve contacted Amadeal and I await their reply, hopefully they can help.

    Iím not sure about being able to adjust the preload, Iím just getting used to the mill.

    Iím wondering if the bearings would need some lube, again Iím not sure even if this is possible.

    I will research preload.

    Many thanks.


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  5. #4
    Actually, dont worry about preload at the moment...

    Looking at the video again, I Think i can see a belt on the silver pully, if it was me i would remove that black top plate and see whats going on under there, if you can, take the belt off and spin the spindle by hand and check that to see if there is any binding or sounds similar to the noise its making when spinning under power.

    Then also check whatever connections are at the other end of the belt, presumably another pully that is connected to the motor shaft, check to see if anything that end is binding or not rotating freely like it should be?

    Also, is it correct your not getting spindle speed (rpm) read out on the display as well?
    .Me

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  7. #5
    Hi Lee
    Great advice. I will look closer at the pulley wheel Iím assuming it will come off.

    Yes the speed indicator is triggered via a magnetic thatís fixed just above the pulley wheel, I removed them for inspection and moved the hall sensor to the side.

    Iím still hopeful of a simple resolution but Iím also reluctant to remove anything major until Iíve heard back from Amadeal, itís still under warranty.

    Many thanks


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  8. #6
    Ok don't forget to let us know the out come etc :)
    .Me

  9. #7
    Yes. Let us know how you get on. Mine has been sat for a year so far (illness, not lazy!) so mine might need some maintenance too.

    I may be looking at replacing mine anyway for some higher rated rpm ones, still have upgrades to fit to it.

  10. #8
    my Amadeal tm25 was always a bit noisy from new but then started to sound like yours a few weeks ago so I changed out the 4 spindle bearings with good quality bearings and packed them with KlŁber ISOFLEX NBU 15 grease and the differance is amazing it's probably only half as loud as it was when I bought it new I wish I'd changed them years ago
    total cost for the bearings was £65 and luckily I have a friend who got me the grease because that's almost more expensive than the bearings
    Last edited by Andybpowell; 02-12-2022 at 04:18 PM.

  11. #9
    Quote Originally Posted by Andybpowell View Post
    my Amadeal tm25 was always a bit noisy from new but then started to sound like yours a few weeks ago so I changed out the 4 spindle bearings with good quality bearings and packed them with KlŁber ISOFLEX NBU 15 grease and the differance is amazing it's probably only half as loud as it was when I bought it new I wish I'd changed them years ago
    total cost for the bearings was £65 and luckily I have a friend who got me the grease because that's almost more expensive than the bearings
    Hi Andy and thanks for the info.
    Iíve been on to Amadeal who suggested I tighten up the retention nut, I have yet to do that but will take a look over the weekend. They also suggest it could be ďincorrectly preloaded spindle bearingĒ.

    Also if I run and put pressure on the spindle the noise stops and once I release it comes back, do you think this could be the bearings?

    My issue is really with mine being brand new and unused I shouldnít be really having to do all this. Amadeal have been ok about it but Iím yet to find a quick solution.

    Can I ask you for a link to where you purchased the bearings, might be worthwhile.

    Many thanks
    Mark


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  12. #10
    It could be incorrect preload or just the poor quality bearings they use in the machines in the first place when I bought mine I spent a few days stripping it down cleaning it and reassembling with fresh grease from the factory they are not well adjusted it was time well spent and cut my backlash in half

    the supplier I used were Simply Bearings Ltd

    I'm not sure if your machine will use the same size bearings as mine I would assume so but you know what they say about assumptions
    These are the bearings I used
    1 x 6209LLBCM/5K NTN
    1 x 6007VV NSK
    1 x 32005X/Q SKF
    1 x 32007X/Q SKF

    You've got to partially dissasemble to check/adjust the preload so you could check the bearing sizes then
    Last edited by Andybpowell; 04-12-2022 at 07:08 PM.

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