Thanks Thanks:  0
Needs Pictures Needs Pictures:  0
Picture(s) thanks Picture(s) thanks:  0
Page 8 of 23 FirstFirst ... 34567891011121318 ... LastLast
Results 106 to 120 of 336
  1. #106
    Join Date
    Feb 2008
    Location
    Australia
    Posts
    988

    Default

    Quote Originally Posted by spidey4fun View Post
    I think the ballscrews need some greese? They came with some nibs which I've yet to attach and I've not put anything on them since I purchased them a few years back. Does anyone know what the maintenance schedule is? And what to use?

    Brad.

    I used CRC Powerlube with PTFE with my chinese machine, but I later changed to grease Shell Alvania EP LF2 (bearing grease)

    My rails were mostly protected and I cleaned the rails on a frequent basis.

  2. # ADS
    Google Adsense Advertisement
    Join Date
    Always
    Location
    Advertising world
    Posts
    Many





     
  3. #107
    Join Date
    Mar 2006
    Location
    Brisbane
    Age
    52
    Posts
    923

    Default

    yep a good bearing grease will do.
    I like to move it move it, I like to move it.

  4. #108
    Join Date
    May 2008
    Location
    Geelong
    Posts
    264

    Default

    Thanks Gents. I added some grease and altered the motor speeds. Stalled it a few times in the process but have it sitting on a velocity of 2800mm/min with acceleration at 120mm/min. I dont think I'd need to run it any faster.

    Here's a better video. Seems my camera has a higher resolution setting .



    Brad.

  5. #109
    Join Date
    May 2008
    Location
    Geelong
    Posts
    264

    Default

    Before I start the Y - axis Im looking for a little input about the width the bearings should ideally be spaced. The X-axis are 250mm as Greg has suggested. My rails on the Y - axis are 1 metre long.

    Brad.

  6. #110
    Join Date
    Feb 2008
    Location
    NOWRA
    Posts
    648

    Default

    Personally i think size of rails etc is important but normally i recommend about 120 to 160mm outer. Its also dependent on the width of your z axis.

    Daniel

  7. #111
    Join Date
    May 2003
    Location
    Perth WA
    Posts
    3,784

    Default

    Typically I work with 120 outside to outside of bearing. The Y axis only carries the Z axis and your bearing rails are a lot closer together so less racking therefore there is not the need have wider spacing. I'll go with Daniel on 120 to 160.
    Cheers,
    Rod

  8. #112
    Join Date
    May 2008
    Location
    Geelong
    Posts
    264

    Default

    OK.. I'll draw it up with a 120mm width between the outside of the bearings. And see how it all fits

    Brad.

  9. #113
    Join Date
    May 2008
    Location
    Geelong
    Posts
    264

    Default

    I purchased 40 t-nuts and some more aluminium. Mounted the top rail to the gantry with a 6mm plate spacer/base. One lot of bolts holds the rail through the 6mm plate into the t-nuts. The other side of the rail is bolted to the plate and the plate is bolted to the t-nuts. Worked great. So now there's no need to put any holes in the gantry.



    Brad.

  10. #114
    Join Date
    May 2003
    Location
    Perth WA
    Posts
    3,784

    Default

    Hi Brad,
    great minds think alike
    I am doing the same with my gantry beam at the moment but I am making my T nuts. Boring drilling and tapping task but it saves a buck or two.
    Cheers,
    Rod

  11. #115
    Join Date
    May 2008
    Location
    Geelong
    Posts
    264

    Default

    Quote Originally Posted by rodm View Post
    Hi Brad,
    great minds think alike
    I am doing the same with my gantry beam at the moment but I am making my T nuts. Boring drilling and tapping task but it saves a buck or two.

    Nice.. I dont quite have the workshop I desire to make every component and ITEM is selling them for 81cents each + GST $40 didnt hurt the budget too much.

    Brad.

  12. #116
    Join Date
    May 2003
    Location
    Perth WA
    Posts
    3,784

    Default

    You must have a mate in the business. Last time I got Item T nuts they were about $4.00 each - that pans out to $200 for my setup. They are a 4mm screw for the rails I have.

    Are yours the flat rounded plate type as that would explain the difference in price.
    Cheers,
    Rod

  13. #117
    Join Date
    May 2008
    Location
    Geelong
    Posts
    264

    Default

    Maybe she messed up the price when I ordered them. They have a flat top with a round underside and a single ball bearing in them. I bought both 5mm and 6mm T- nuts, but she said they also had 4mm.

    Brad.

  14. #118
    Join Date
    May 2003
    Location
    Perth WA
    Posts
    3,784

    Default

    They are the ones. Either freight to Perth is really expensive or you got a bargain.

    I wrote to them last time complaing about the price as it jumped by 100% in two months but even if they did take any notice, which I doubt they did, you still got them at the right price.
    Cheers,
    Rod

  15. #119
    Join Date
    Feb 2008
    Location
    Australia
    Posts
    988

    Default

    Bargain price, I paid $1.30 for mine for Profile 6 T-Nuts.

    Good thing is they can be inserted along the rail without having to undo everything, 8020 has even cheaper nuts at ~ 50c each but its basic steel bar with a tapped hole zinc plated.

  16. #120
    Join Date
    May 2008
    Location
    Geelong
    Posts
    264

    Default

    Yeah.. I found that very handy. I disconnected one end of the gantry before realising I could just push them in through the front.

    Brad.

Page 8 of 23 FirstFirst ... 34567891011121318 ... LastLast

Similar Threads

  1. Gecko G540 CNC Kits now available
    By phomann in forum CNC Machines
    Replies: 46
    Last Post: 17th January 2010, 06:25 PM
  2. G540 Matched Motors
    By seafurymike in forum CNC Machines
    Replies: 4
    Last Post: 25th September 2009, 02:47 PM
  3. Trailer - to build or not to build
    By motegi in forum TRAILERS & OTHER FABRICATED STUFF
    Replies: 17
    Last Post: 6th May 2009, 03:07 PM
  4. Mach 3 & G540 Motor tuning
    By seafurymike in forum CNC Machines
    Replies: 13
    Last Post: 20th April 2009, 04:24 PM
  5. Gecko G540 - special offer
    By snowyskiesau in forum CNC Machines
    Replies: 13
    Last Post: 13th February 2009, 01:50 PM

Tags for this Thread

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •