matt_isserstedt
Diamond
- Joined
- Dec 15, 2003
- Location
- suburbs of Ann Arbor, MI, USA
Hello All
I recently acquired this 612 lathe @ 16 x 30. It has the separate outboard hydraulic tank and external 10hp spindle motor. Advanced rigging class required to move it as the CG is basically left of the spindle face....
PXL_20210703_110720253.jpg - Google Drive
PXL_20210713_202005430.jpg - Google Drive
Originally it was wired 480/3/60 and I'm basically thru the process of converting to 240/3/60...other than ancient overload heater section I'll likely never find the correct heaters for....I have the NC control contacts jumpered currently
I read in another thread about running the hydraulic motor independently to verify correct speed range shifting and so I disconnected the 1T1/1T2/1T3 main spindle motor and left the 2T1/2T2/2T3 hydraulic unit motor connected.
This works and I bumped it in both directions of rotation but could not tell a difference. I didn't want to run more than about 3 seconds in either direction to avoid damage. I filled the tank about 1/2 with fresh Vactra Heavy-Med as it was previously drained.
I think the correct answer is to wait until my 30A and 35A FRS fuses come in and then I can also attempt to use the main spindle motor which is allegedly clockwise rotation as viewed from the outer endbell in FWD rotation. Currently 17-1/2A fuses are fitted and I have a bad feeling its going to eat those just to bump the 10hp on 240vac. I kept all the original phasing consistent and have all motor leads labeled as originally connected ---- relying on the hypothesis that it was working at the GM Tech Center when it was last disconnected and sold to HGR.
But past that, supposing a brand new hydraulic motor was fitted, how would one figure out the correct rotation? Is there a fitting or line that can be cracked to demonstrate proper fluid flow?
Thanks as always for your advice.
I recently acquired this 612 lathe @ 16 x 30. It has the separate outboard hydraulic tank and external 10hp spindle motor. Advanced rigging class required to move it as the CG is basically left of the spindle face....
PXL_20210703_110720253.jpg - Google Drive
PXL_20210713_202005430.jpg - Google Drive
Originally it was wired 480/3/60 and I'm basically thru the process of converting to 240/3/60...other than ancient overload heater section I'll likely never find the correct heaters for....I have the NC control contacts jumpered currently
I read in another thread about running the hydraulic motor independently to verify correct speed range shifting and so I disconnected the 1T1/1T2/1T3 main spindle motor and left the 2T1/2T2/2T3 hydraulic unit motor connected.
This works and I bumped it in both directions of rotation but could not tell a difference. I didn't want to run more than about 3 seconds in either direction to avoid damage. I filled the tank about 1/2 with fresh Vactra Heavy-Med as it was previously drained.
I think the correct answer is to wait until my 30A and 35A FRS fuses come in and then I can also attempt to use the main spindle motor which is allegedly clockwise rotation as viewed from the outer endbell in FWD rotation. Currently 17-1/2A fuses are fitted and I have a bad feeling its going to eat those just to bump the 10hp on 240vac. I kept all the original phasing consistent and have all motor leads labeled as originally connected ---- relying on the hypothesis that it was working at the GM Tech Center when it was last disconnected and sold to HGR.
But past that, supposing a brand new hydraulic motor was fitted, how would one figure out the correct rotation? Is there a fitting or line that can be cracked to demonstrate proper fluid flow?
Thanks as always for your advice.