Need Help! Lubricating Z axis of Benchtop Pro


Page 1 of 2 12 LastLast
Results 1 to 12 of 14

Thread: Lubricating Z axis of Benchtop Pro

  1. #1
    Registered
    Join Date
    Nov 2006
    Location
    United States
    Posts
    1025
    Downloads
    0
    Uploads
    0

    Default Lubricating Z axis of Benchtop Pro

    I must be missing something.

    I have a Benchtop Pro machine with 24" gantry travel and 36" long axis travel. The linear actuator for each axis is just an elongated "Z" axis. Like a dummy, I extensively used my machine without additional lubrication for nearly two years. My gantry axis, which is by far the most heavily used axis, failed and I noted that the linear slides were bone dry. I have a new actuator installed and the machine is operating again. CNCRouterParts told me that I need to use a grease gun with a needle fitting to inject grease into each of the four bearing blocks in each linear actuator every three to six months. I am to "simply" remove the dust covers, and then remove the central screw from the outside end of the dust cover for the bearing block. Then I am apply the grease gun needle fitting and inject 3-4 squirts of grease. Finally, I need to replace replace the screw and reinstall the dust covers for the actuator. OK I was able to do that to both of my long axis linear actuators. Since the gantry actuator is brand new and factory lubricated, I will defer that axis until I lubricate the machine again.

    Problem is lubricating the Z axis. It was easy to expose the two top bearings of the Z axis linear acturator, remove the central screw, inject the grease, and the replace the screw. Problem is the bottom two bearing blocks are impossible for me to reach because the bottom two bearing blocks are covered the the mounting extrusion for the spindle. Here's a couple of photos:
    Lubricating Z axis of Benchtop Pro-181223-2-jpgLubricating Z axis of Benchtop Pro-181223-1-jpg

    How does everyone here reach that screw? Since all the Pro machines have this Z axis, surely someone has figured this out!

    Similar Threads:
    Attached Thumbnails Attached Thumbnails Lubricating Z axis of Benchtop Pro-181223-2-jpg   Lubricating Z axis of Benchtop Pro-181223-1-jpg  
    Last edited by DonFrambach; 12-23-2018 at 08:49 PM.


  2. #2
    Registered
    Join Date
    Nov 2006
    Location
    United States
    Posts
    1025
    Downloads
    0
    Uploads
    0

    Default Re: Lubricating Z axis of Benchtop Pro

    The problem that I have is removing and replacing that small screw. I can reach it with the long needle extension of my grease gun. I'm going to look for some long reach allen wrenches. here's a photo of the grease gun:
    Lubricating Z axis of Benchtop Pro-181223-3-jpg

    Attached Thumbnails Attached Thumbnails Lubricating Z axis of Benchtop Pro-181223-3-jpg  


  3. #3
    Community Moderator ger21's Avatar
    Join Date
    Mar 2003
    Location
    United States
    Posts
    33089
    Downloads
    0
    Uploads
    0

    Default Re: Lubricating Z axis of Benchtop Pro

    I would replace the screws with grease fittings.

    Gerry

    UCCNC 2017 Screenset
    http://www.thecncwoodworker.com/2017.html

    Mach3 2010 Screenset
    http://www.thecncwoodworker.com/2010.html

    JointCAM - CNC Dovetails & Box Joints
    http://www.g-forcecnc.com/jointcam.html

    (Note: The opinions expressed in this post are my own and are not necessarily those of CNCzone and its management)


  4. #4
    Registered
    Join Date
    Nov 2006
    Location
    United States
    Posts
    1025
    Downloads
    0
    Uploads
    0

    Default Re: Lubricating Z axis of Benchtop Pro

    Quote Originally Posted by ger21 View Post
    I would replace the screws with grease fittings.
    Grease fittings would be great! The screws are kind of small. (either M3 or M4)

    Sorry to be so naive but could you tell me where I could learn about buying, installing, and using small grease fittings?



  5. #5
    Community Moderator ger21's Avatar
    Join Date
    Mar 2003
    Location
    United States
    Posts
    33089
    Downloads
    0
    Uploads
    0

    Default Re: Lubricating Z axis of Benchtop Pro

    If you know the thread size, you just screw the grease fitting in where the screw is.

    Search "M4 zerk" on Ebay. They are about $10 from China.


    You may need a special tip for the gun to fit the fitting.

    Gerry

    UCCNC 2017 Screenset
    http://www.thecncwoodworker.com/2017.html

    Mach3 2010 Screenset
    http://www.thecncwoodworker.com/2010.html

    JointCAM - CNC Dovetails & Box Joints
    http://www.g-forcecnc.com/jointcam.html

    (Note: The opinions expressed in this post are my own and are not necessarily those of CNCzone and its management)


  6. #6
    Registered
    Join Date
    Sep 2005
    Location
    USA
    Posts
    888
    Downloads
    0
    Uploads
    0

    Default Re: Lubricating Z axis of Benchtop Pro

    Most auto parts stores like NAPA carry metric and US thread zerks. Mine came already installed on my FLA machine. They are cheap buy some of each either the 45 deg or 90 deg ones should work.

    Retired Master Electrician, HVAC/R Commercial union shop and Lots of hobbies. FLA Saturn 2 4x4 CNC Router


  7. #7
    Community Moderator ger21's Avatar
    Join Date
    Mar 2003
    Location
    United States
    Posts
    33089
    Downloads
    0
    Uploads
    0

    Default Re: Lubricating Z axis of Benchtop Pro

    Most auto parts stores like NAPA carry metric and US thread zerks.
    4mm threaded zerks are very hard to find.

    Gerry

    UCCNC 2017 Screenset
    http://www.thecncwoodworker.com/2017.html

    Mach3 2010 Screenset
    http://www.thecncwoodworker.com/2010.html

    JointCAM - CNC Dovetails & Box Joints
    http://www.g-forcecnc.com/jointcam.html

    (Note: The opinions expressed in this post are my own and are not necessarily those of CNCzone and its management)


  8. #8
    Registered
    Join Date
    Sep 2005
    Location
    USA
    Posts
    888
    Downloads
    0
    Uploads
    0

    Default Re: Lubricating Z axis of Benchtop Pro

    Try Amazon 45 deg brass Pack of 10 $15.

    Retired Master Electrician, HVAC/R Commercial union shop and Lots of hobbies. FLA Saturn 2 4x4 CNC Router


  9. #9
    Registered
    Join Date
    Nov 2006
    Location
    United States
    Posts
    1025
    Downloads
    0
    Uploads
    0

    Default Re: Lubricating Z axis of Benchtop Pro

    Update:
    Long reach 2.5 mm Allen wrench on order.
    4mm grease fittings of several types on order from three sources. These fittings were not expensive so I ordered them before verifying that 4mm is the correct size.

    Will continue to post updates.



  10. #10
    Registered ubergeekseven's Avatar
    Join Date
    Mar 2017
    Location
    United States
    Posts
    123
    Downloads
    0
    Uploads
    0

    Default Re: Lubricating Z axis of Benchtop Pro

    I have not lubricated mine at all and wondered about it recently. Their lubrication video does not go over that at all in any way. They should probably add this information for future use. It sound like a pain without the same fittings on the rest of the blocks. I am going to be adjusting the height of my router on the gantry, so I might as well do this at the same time.



  11. #11
    Registered
    Join Date
    Sep 2005
    Location
    USA
    Posts
    888
    Downloads
    0
    Uploads
    0

    Default Re: Lubricating Z axis of Benchtop Pro

    FYI years ago when I had my BMW motorcycle I purchased a good set of T handled Metric Allen wrenches to go with the Imperial set I already owned. I use them all the time.

    Retired Master Electrician, HVAC/R Commercial union shop and Lots of hobbies. FLA Saturn 2 4x4 CNC Router


  12. #12
    Registered
    Join Date
    Mar 2018
    Posts
    1
    Downloads
    0
    Uploads
    0

    Default Re: Lubricating Z axis of Benchtop Pro

    I have the same machine and have had trouble with this. I asked CNCRP for clarification and they said "On the bearing you have the top and the bottom that are red. One side has a screw in it. The hole to grease is on the opposite side."

    So I've been greasing the opening on the opposite side, without the screw. It's really very hard to do, though; so hard that I've wondered if the bearings were backwards or something. I ended up assembling a weird pile of angled grease fittings together so that I can just about get the needle into that hole, but for many of the bearings I can't see it at the same time so it has to be done by feel and then just watch until I see a little grease squeezing out.

    I was really hoping they'd put up a video at some point so I could see how they mean for this to be done. If someone successfully puts fittings on these or thinks of some sensible way to accomplish this and can share I'd really love to hear about it; it's the only thing about this machine that I find unsatisfactory right now.



Page 1 of 2 12 LastLast

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
  •  


About CNCzone.com

    We are the largest and most active discussion forum for manufacturing industry. The site is 100% free to join and use, so join today!

Follow us on


Our Brands

Lubricating Z axis of Benchtop Pro

Lubricating Z axis of Benchtop Pro