We have a shop with 70 acme multi spindles, but we have no central system for chips and oil. In the course of the machining operation, our coolant oil mixes with the hydraulic oil. We are getting different results on similar machines using the same tooling. Is the mixing of the oils the cause of this? What should we do?
Shop Doc Forum » Screw Machine Issues
No central system for chips and oil. Coolant oil is mixing with hydraulic oil
(4 posts) (4 voices)-
Posted 2 years ago #
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depending on the type of oil you are using. many of the current cutting oils on the market are tri-purpose.
meaning they can be used in the sump of the machine and the hyd. system.
check with your oil supplier.
we use a Shell product - new / reclaimed oil in the sumps, and new oil only in the hyd systems.
this way the leaks into the sump will not weaking the additive package of the cutting oil.
Posted 2 years ago # -
It could be but a little more info would be helpful first. How old are the Acme's and what kind of shape are they in. It could also be a difference in the condition of the spindle bearings, differences in the gib adjustments on the different machines or something of that nature. To rule out the coolant, you might want to clean out 6 or so machines and start from scratch with fresh coolant..run the same job.. and watch the results.
Posted 2 years ago # -
I use a Castrol synthetic and the lub/hydraulic oil will not mix with the coolant. In fact, I leave the tramp oil in the sumps to inhibit evaporation. The coolant is Castrol Syntilo 9954.
Regards, Ray in FLAPosted 2 years ago #
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