Power Punch EP Gear Oil Additive - How Much Do You Use?

[epanzella]

Hi Ed. I ended up buying the 8x40 Lathe specific DRO with magnetic scales from DRO Pros. Bill at DRO Pros said they have installed the X scale on the headstock side of the cross slide, keeping the cross slide lock accessible. He said it works well. I will be calling him back when I install mine to get more info. I will try to post a write up when I install my DRO.

Bob J

Thanks much.
Ed P

 

[frostheave]

Ok, here is some data. I did the spindle/gearbox break-in on my new G4003G lathe and took several readings. First I did the break-in with oil in the gearbox measuring bearing temperatures, rotational speed, and gearbox noise. After the break-in was complete, I put new oil and 16oz, one bottle, of Power Punch in the gearbox. The gearbox noise was then measured again. Below shows the test setups and the resulting data.




Gearbox Noise Level Measurement.






Added 3 pieces of reflective tape to chuck for checking speed with laser-tach. Divided readings by 3.






Inboard Bearing Temperature Measurement






Outboard Bearing Temperature Measurement






Motor Pulley Bearing Temperature

_____________________________________________________________________________________________

[TABLE="width: 768"]
[TR]
[TD="colspan: 3"]G4003G Headstock Break-In
[/TD]
[TD][/TD]
[TD][/TD]
[TD][/TD]
[TD][/TD]
[TD][/TD]
[TD][/TD]
[/TR]
[TR]
[TD="colspan: 6"]Chevron GST 32 Oil - Equivalent to Mobil DTE Light[/TD]
[TD][/TD]
[TD][/TD]
[TD][/TD]
[/TR]
[TR]
[TD="colspan: 2"]No Power Punch[/TD]
[TD][/TD]
[TD][/TD]
[TD][/TD]
[TD][/TD]
[TD][/TD]
[TD][/TD]
[TD][/TD]
[/TR]
[TR]
[TD]10/29/2013[/TD]
[TD][/TD]
[TD][/TD]
[TD][/TD]
[TD][/TD]
[TD][/TD]
[TD][/TD]
[TD][/TD]
[TD][/TD]
[/TR]
[TR]
[TD][/TD]
[TD][/TD]
[TD][/TD]
[TD]Running[/TD]
[TD]Outboard[/TD]
[TD]Inboard[/TD]
[TD]Motor[/TD]
[TD][/TD]
[TD][/TD]
[/TR]
[TR]
[TD][/TD]
[TD]Speed[/TD]
[TD][/TD]
[TD]Time[/TD]
[TD]Bearing[/TD]
[TD]Bearing[/TD]
[TD]Pulley[/TD]
[TD]Headstock[/TD]
[TD]Tach[/TD]
[/TR]
[TR]
[TD][/TD]
[TD]RPM
[/TD]
[TD]Direction[/TD]
[TD]Minutes[/TD]
[TD]Temp F[/TD]
[TD]Temp F[/TD]
[TD]Bearing Temp F[/TD]
[TD]Noise dBA[/TD]
[TD]RPM[/TD]
[/TR]
[TR]
[TD][/TD]
[TD]70[/TD]
[TD]Fwd[/TD]
[TD]20[/TD]
[TD]58[/TD]
[TD]56[/TD]
[TD]86[/TD]
[TD]68[/TD]
[TD]85[/TD]
[/TR]
[TR]
[TD][/TD]
[TD]70[/TD]
[TD]Rev[/TD]
[TD]20[/TD]
[TD]61[/TD]
[TD]58[/TD]
[TD]96[/TD]
[TD]67[/TD]
[TD]85[/TD]
[/TR]
[TR]
[TD][/TD]
[TD]200[/TD]
[TD]Fwd[/TD]
[TD]20[/TD]
[TD]67[/TD]
[TD]61[/TD]
[TD]101[/TD]
[TD]72[/TD]
[TD]236[/TD]
[/TR]
[TR]
[TD][/TD]
[TD]200[/TD]
[TD]Rev[/TD]
[TD]20[/TD]
[TD]69[/TD]
[TD]64[/TD]
[TD]102[/TD]
[TD]71[/TD]
[TD]236[/TD]
[/TR]
[TR]
[TD][/TD]
[TD]220[/TD]
[TD]Fwd[/TD]
[TD]20[/TD]
[TD]71[/TD]
[TD]65[/TD]
[TD]103[/TD]
[TD]68[/TD]
[TD]255[/TD]
[/TR]
[TR]
[TD][/TD]
[TD]220[/TD]
[TD]Rev[/TD]
[TD]20[/TD]
[TD]71[/TD]
[TD]66[/TD]
[TD]102[/TD]
[TD]67[/TD]
[TD]255[/TD]
[/TR]
[TR]
[TD][/TD]
[TD]270[/TD]
[TD]Fwd[/TD]
[TD]20[/TD]
[TD]73[/TD]
[TD]68[/TD]
[TD]102[/TD]
[TD]74[/TD]
[TD]307[/TD]
[/TR]
[TR]
[TD][/TD]
[TD]270[/TD]
[TD]Rev[/TD]
[TD]20[/TD]
[TD]76[/TD]
[TD]70[/TD]
[TD]103[/TD]
[TD]72[/TD]
[TD]307[/TD]
[/TR]
[TR]
[TD][/TD]
[TD]360[/TD]
[TD]Fwd[/TD]
[TD]20[/TD]
[TD]80[/TD]
[TD]72[/TD]
[TD]104[/TD]
[TD]70[/TD]
[TD]421[/TD]
[/TR]
[TR]
[TD][/TD]
[TD]360[/TD]
[TD]Rev[/TD]
[TD]20[/TD]
[TD]81[/TD]
[TD]74[/TD]
[TD]104[/TD]
[TD]70[/TD]
[TD]421[/TD]
[/TR]
[TR]
[TD][/TD]
[TD]600[/TD]
[TD]Fwd[/TD]
[TD]20[/TD]
[TD]89[/TD]
[TD]77[/TD]
[TD]104[/TD]
[TD]73[/TD]
[TD]708[/TD]
[/TR]
[TR]
[TD][/TD]
[TD]600[/TD]
[TD]Rev[/TD]
[TD]20[/TD]
[TD]92[/TD]
[TD]79[/TD]
[TD]105[/TD]
[TD]74[/TD]
[TD]708[/TD]
[/TR]
[TR]
[TD][/TD]
[TD]800[/TD]
[TD]Fwd[/TD]
[TD]20[/TD]
[TD]97[/TD]
[TD]81[/TD]
[TD]104[/TD]
[TD]76[/TD]
[TD]920[/TD]
[/TR]
[TR]
[TD][/TD]
[TD]800[/TD]
[TD]Rev[/TD]
[TD]20[/TD]
[TD]99[/TD]
[TD]85[/TD]
[TD]103[/TD]
[TD]76[/TD]
[TD]920[/TD]
[/TR]
[TR]
[TD][/TD]
[TD]1000[/TD]
[TD]Fwd[/TD]
[TD]20[/TD]
[TD]113[/TD]
[TD]87[/TD]
[TD]105[/TD]
[TD]77[/TD]
[TD]1167[/TD]
[/TR]
[TR]
[TD][/TD]
[TD]1000[/TD]
[TD]Rev[/TD]
[TD]20[/TD]
[TD]111[/TD]
[TD]90[/TD]
[TD]106[/TD]
[TD]79[/TD]
[TD]1167[/TD]
[/TR]
[TR]
[TD][/TD]
[TD]1400[/TD]
[TD]Fwd[/TD]
[TD]20[/TD]
[TD]122[/TD]
[TD]93[/TD]
[TD]106[/TD]
[TD]80[/TD]
[TD]1511[/TD]
[/TR]
[TR]
[TD][/TD]
[TD]1400[/TD]
[TD]Rev[/TD]
[TD]20[/TD]
[TD]126[/TD]
[TD]94[/TD]
[TD]109[/TD]
[TD]78[/TD]
[TD]1511[/TD]
[/TR]
[/TABLE]

_____________________________________________________________________________________________

[TABLE="width: 570"]
[TR]
[TD="colspan: 3"]G4003G Headstock Break-In
[/TD]
[TD][/TD]
[TD][/TD]
[TD][/TD]
[/TR]
[TR]
[TD="colspan: 5"]Noise Comparison Before and After Power Punch[/TD]
[TD][/TD]
[/TR]
[TR]
[TD="colspan: 5"]Chevron GST 32 Oil - Equivalent to Mobil DTE Light[/TD]
[TD][/TD]
[/TR]
[TR]
[TD]10/29/2013[/TD]
[TD][/TD]
[TD][/TD]
[TD][/TD]
[TD][/TD]
[TD][/TD]
[/TR]
[TR]
[TD][/TD]
[TD][/TD]
[TD][/TD]
[TD]Without PP[/TD]
[TD]With PP[/TD]
[TD]Noise[/TD]
[/TR]
[TR]
[TD][/TD]
[TD]Speed[/TD]
[TD][/TD]
[TD]Headstock[/TD]
[TD]Headstock[/TD]
[TD]Difference dBA[/TD]
[/TR]
[TR]
[TD][/TD]
[TD]RPM
[/TD]
[TD]Direction[/TD]
[TD]Noise dBA[/TD]
[TD]Noise dBA[/TD]
[TD]With PP[/TD]
[/TR]
[TR]
[TD][/TD]
[TD]70[/TD]
[TD]Fwd[/TD]
[TD]68[/TD]
[TD]67[/TD]
[TD]-1[/TD]
[/TR]
[TR]
[TD][/TD]
[TD]70[/TD]
[TD]Rev[/TD]
[TD]67[/TD]
[TD]66[/TD]
[TD]-1[/TD]
[/TR]
[TR]
[TD][/TD]
[TD]200[/TD]
[TD]Fwd[/TD]
[TD]72[/TD]
[TD]70[/TD]
[TD]-2[/TD]
[/TR]
[TR]
[TD][/TD]
[TD]200[/TD]
[TD]Rev[/TD]
[TD]71[/TD]
[TD]71[/TD]
[TD]0[/TD]
[/TR]
[TR]
[TD][/TD]
[TD]220[/TD]
[TD]Fwd[/TD]
[TD]68[/TD]
[TD]69[/TD]
[TD]1[/TD]
[/TR]
[TR]
[TD][/TD]
[TD]220[/TD]
[TD]Rev[/TD]
[TD]67[/TD]
[TD]68[/TD]
[TD]1[/TD]
[/TR]
[TR]
[TD][/TD]
[TD]270[/TD]
[TD]Fwd[/TD]
[TD]74[/TD]
[TD]74[/TD]
[TD]0[/TD]
[/TR]
[TR]
[TD][/TD]
[TD]270[/TD]
[TD]Rev[/TD]
[TD]72[/TD]
[TD]76[/TD]
[TD]4[/TD]
[/TR]
[TR]
[TD][/TD]
[TD]360[/TD]
[TD]Fwd[/TD]
[TD]70[/TD]
[TD]71[/TD]
[TD]1[/TD]
[/TR]
[TR]
[TD][/TD]
[TD]360[/TD]
[TD]Rev[/TD]
[TD]70[/TD]
[TD]72[/TD]
[TD]2[/TD]
[/TR]
[TR]
[TD][/TD]
[TD]600[/TD]
[TD]Fwd[/TD]
[TD]73[/TD]
[TD]75[/TD]
[TD]2[/TD]
[/TR]
[TR]
[TD][/TD]
[TD]600[/TD]
[TD]Rev[/TD]
[TD]74[/TD]
[TD]77[/TD]
[TD]3[/TD]
[/TR]
[TR]
[TD][/TD]
[TD]800[/TD]
[TD]Fwd[/TD]
[TD]76[/TD]
[TD]75[/TD]
[TD]-1[/TD]
[/TR]
[TR]
[TD][/TD]
[TD]800[/TD]
[TD]Rev[/TD]
[TD]76[/TD]
[TD]77[/TD]
[TD]1[/TD]
[/TR]
[TR]
[TD][/TD]
[TD]1000[/TD]
[TD]Fwd[/TD]
[TD]77[/TD]
[TD]75[/TD]
[TD]-2[/TD]
[/TR]
[TR]
[TD][/TD]
[TD]1000[/TD]
[TD]Rev[/TD]
[TD]79[/TD]
[TD]79[/TD]
[TD]0[/TD]
[/TR]
[TR]
[TD][/TD]
[TD]1400[/TD]
[TD]Fwd[/TD]
[TD]80[/TD]
[TD]78[/TD]
[TD]-2[/TD]
[/TR]
[TR]
[TD][/TD]
[TD]1400[/TD]
[TD]Rev[/TD]
[TD]78[/TD]
[TD]80[/TD]
[TD]-2[/TD]
[/TR]
[/TABLE]

_____________________________________________________________________

So it appears, in my case, the Power Punch essentially made no difference in gearbox noise, if anything, maybe a little louder. I wonder If I added too much and should have gone with only 8oz. Regardless, the gearbox isn't too noisy and I am pretty happy with it so far.

I thought the laser-tach speed readings were pretty interesting. According to the manual for the tach, the accuracy is, +-0.05% +1 Digit. Therefore, at say 1000 rpm, the tach should accurately read between 997 and 1003 rpm. The nameplate on the motor says 1720 rpm. I measured the motor speed at 1793 rpm. A difference of 73 motor rpm does not account for the difference in measured and set spindle speed. I was going to count the number of gear teeth inside the gearbox and do the math to see if the numbers would jive, but I ran out of time. Ok, yeah, I was too lazy to do it!

Any thoughts on the Power Punch?

 

[jgedde]

Frostheave,

Great work! Thanks for being so scientific about it!

Your headstock temperatures seem, at least using my "calibrated" hand, in line with what you're seeing with my G4003. I've never actually measured the speed of my lathe, but I sus[pect mine is off a bit as well.

John

 

[frostheave]

Frostheave,

Great work! Thanks for being so scientific about it!

Your headstock temperatures seem, at least using my "calibrated" hand, in line with what you're seeing with my G4003. I've never actually measured the speed of my lathe, but I sus[pect mine is off a bit as well.

John

Thanks John. I am one of those who thinks you can never have too much data! I am aligning the lathe right now and am having some issues. I will post in the Grizzly forum and see if anyone has any suggestions. Too bad Richard King is no longer here. He sure has a lot of valuable experience!

Bob J