Are there any procedures or guidelines used to calibrate grease guns.
I am currently using a 1 cubic inch block and then seeing how many pumps of grease it takes to fill the cube. I then pump the same number of pumps of grease on a scale and determine the weigh in ounces. This is useful in determing how much grease to use to grease bearings.Of course this depends on the grease properties, the size and design of the bearing, the speed, and the operating conditions.
Any other ideas ?

You said it.

weight a piece of plastic, pump 10 shots of grease on it, weight again, deduct the initial plastic, and divide by 10.

Suggest to use grams instead of ounces for more accuracy. Each pump might be around 2 grams. Please let me know the outcome of your evaluation.
You are right on target for not overlubricating.

We feel elsewise - khowing thw qty help to conserve - but Ultrasonic technology is better than measured qty - if you really want to ensure proper lubrication of the bearing.

there is a company called uvlm and one more having this product (noria has a mention some where) - worth the effort and money. TRY IT....

Hi Terry,
I do not agree ultrasonic is the only way to go. It tells you when the grease has reached the ball contact surface but nothing else. Use a grease meter mounted on your gun. Trico (US) or Esko Pacific Sales (Canada) can help you. We are living in the year of 2007!

People

We performed a procedure to calibrate our grease guns. We had manual (2.7 Kg of grease) and pneumatic guns (20 Kg of grease).

We prepared a stainless tubing 1/8" diameter, 5" long, with a grease valve at the end, and we pumped the grease. We found that in the pneumatic gun, each pump is 9.5 gr of grease, and in the manual gun, each pump is 2.7 gr of grease.

There are several ways to determine the exactly qty of grease for avoid overlubricating.


Regards