Amount of Lubricant for Open Gear

The formula I have for calculating lube volumes for open gears goes like this:

(pitch dia of large gear times Pi Squared) Width = total square inches of gear

(total square inches times .004) / 16 = cubic inches to be applied every 30 minutes.

The premise of an auto lube system is to supply a small amount often and so if you take the volume and break it up even further and put smaller amounts on, it maintains a more even and consistent coverage, and you end up using less lubricant.

Dean

Hi Ernesson,

If you want to install automatic lubrication in your open gears pls email me

Regards,

Any formula should be adjusted according operating conditions. Perhaps another more practical method than a formula leads you to determine the right amount of lubricant.
For example: tooth flank temperature, after lubrication determine evolution of temperatures in the working toot flanks, when the temperature starts climbing over a certain value record the time it took to get to that point and set it as the relubrication interval.

In Philippines, you can contact Roland Metelmann, he knows a lot about open gears. His cell phone is 917 880 2502

I agree with you Ricky, The formula that I put out is a starting point, as everything looks really good on paper, until you get into the real world. Just about every automated lubrication system that I have every designed using these formulas has had to be adjusted to take things like heat, speed, contamination, wash out, etc into consideration and have the volumes adjusted to compensate for these things.

Dean

Hi guys,

Thank you very much with all your input. By the way, we already have the automatic lubricators for our Kiln and Ball Mills. I just need to recompute so we can reduce our consumption. Any more inputs will be apprecaited. Thanks!