Results 1 to 4 of 4

Thread: G0602 speed reducer

  1. #1
    Plastic
    Join Date
    Apr 2011
    Posts
    31
    Tickets
    0
    Post Thanks / Like
    Chats
    0
    Total Downloaded
    0
    My Feedback

    (0% Positive Feedback)

    G0602 speed reducer

    here's a couple of videos of the speed reducer
    I also have a reverse tumbler gear set I designed and built for this lathe. using small engine timing gears.
    this speed reducer is built from casting and again small engine gears. the odd shape is due to making it clear the pulleys/gears on the lathe, which I then had to do a last minute change, seems the 2 drive belts interfered with each other so I had to rotate the assembly to keep the belts from rubbing.



    I should add that when not in use I remove the speed reducer. It is held on by one 3/8" bolt so it goes on and comes off easily. The torque at the spindle is very high if you accidentally got caught by the work or chuck its going to be a very slow and painful experience. If you do this modification with the spindle running slow DO NOT get careless.
    Last edited by Starlight Tools; 12-05-11 at 12:48 PM.

  2. #2
    Bronze Pacer's Avatar
    Join Date
    Apr 2011
    City
    Greenwood
    State
    NW La
    Country
    United States
    Posts
    443
    Tickets
    0
    Post Thanks / Like
    Chats
    0
    Total Downloaded
    0
    My Feedback

    (0% Positive Feedback)

    Re: G0602 speed reducer

    That is way neat - that little 9x20 aint known for its slow speed, and, for having fwd/rev feed either.

    Your casting of the pulleys remind me of some tidbits of the lineage of that lathe - and, of a recent project I did in casting.

    You may be aware of it, but maybe others arent - the 9x20's (and a couple others) were cloned by the Chinese off the 8 and 10" Emco Maier lathes from Austria, a lot of similarities.

    I have a Emco Compact 10 I received as a basket case and was missing all the motor and mounting plate with the 2 reducing pulleys. After a Googling spree I finally made contact with ONE other owner of a Compact 10 and he was generous enough to furnish the dimensions for the plate/pulleys. So, like you, I cast them. I retained the original design using those small gates belts, but seeing yours and thinking back on it I should've went ahead with another type belt. Since I didnt have a motor to start with, I used a treadmill motor to gain variable speed - and those real slow speeds that are so nice to have.

    You can sure see some similarities here to the 9x20 ---


  3. #3
    Plastic
    Join Date
    Apr 2011
    Posts
    31
    Tickets
    0
    Post Thanks / Like
    Chats
    0
    Total Downloaded
    0
    My Feedback

    (0% Positive Feedback)

    Re: G0602 speed reducer

    Yes it has very high torque.

  4. #4
    Plastic
    Join Date
    Apr 2011
    Posts
    31
    Tickets
    0
    Post Thanks / Like
    Chats
    0
    Total Downloaded
    0
    My Feedback

    (0% Positive Feedback)

    Re: G0602 speed reducer

    There is 3 gears in the speed reducer. Two crank shaft timing gears and one timing gear makes a 2 to 1 speed change. To get the speed slower with the speed reducer the in put pulley needs to be larger than the out put pulley. The reason for using 3 gears is for rotation. The input rotates clock wise, the intermediate gear will rotate counter clock wise, causing the out put gear to rotate clock wise.
    To get the proper 2 to1 ratio the input gear has to match the out put gear in ratio, you can use a larger or small intermediate gear, and the input and out put will be the same. The more distance you can get between the in put and out put shafts will allow you to play with larger pulley sizes, to either speed up the reducer or slow it down. I used timing gears out of a briggs 5 hp engine.

Similar Threads

  1. single phase vari speed or 2 speed
    By hothead in forum ELECTRICAL ISSUES - POWERING YOUR MACHINES & SHOP (PHASE CONVERTERS, VFDS, ETC.)
    Replies: 4
    Last Post: 02-09-14, 08:54 AM
  2. Q re variable speed or 6 speed
    By jeffm in forum GRIZZLY, BUSY BEE, HARBOR FREIGHT & CENTRAL MACHINERY
    Replies: 1
    Last Post: 03-16-13, 09:55 PM
  3. Clausing 6913 reducer sleeve
    By flwhite500 in forum CLAUSING-COLCHESTER & LEBLOND
    Replies: 12
    Last Post: 03-05-13, 07:31 PM
  4. changing speed AC belt on g0602
    By upTheHill in forum GRIZZLY, BUSY BEE, HARBOR FREIGHT & CENTRAL MACHINERY
    Replies: 4
    Last Post: 12-05-12, 04:48 PM
  5. G0602 speed reducer
    By Loafy in forum OTHER BRANDS OF MACHINERY
    Replies: 5
    Last Post: 05-02-11, 11:02 AM

Bookmarks

Posting Permissions

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