Water Based Grinding Fluids

Water Based Grinding Fluids


About grinding fluids
One important functions of the grinding fluid is to remove the heat generated at the many cutting edges of the the grinding surfaces and the grinding wheel. At the same time the fluid is to lubricate the grinding surface in order to reduce the wear of the grinding wheel. The grinding fluid also flushes away the grinding chips from the grinder.

There are two major categories of water based grinding fluids; Mineral oil in water emulsion and semi/synthetic products in water coolants . Both of them are mixtures of lubricants; oil and synthetic lubricant. Normal dilution rate is between 1 - 5 %. Oil in water emulsion is milky white due to the oil droplets reflecting the light, and the synthetic is transparent since the lubricant is desolved in water. Generally both types of fluids do satisfy their expected function. However some users prefer synthetic fluid over oil in water emulsion due to it`s transparency, tramp oil rejection and quick sedimentation of grinding chips in spite of the disadvantages like fungus infections, week corrosion protection, stickiness when dry on the surfaces, soap formation at presence of desolved heavy metal or salts and also the higher price of the products.
Grinding fluids include besides water and lubricants, bactericides to depress the growth of fungus and bacteria, and corrosion inhibitor. A contaminated fluid less duable against attack from microbes and also clogg the coolant passage between the cutting edges of the grinding wheel. The consequences will be the "burn marks" on the ground surfaces and gleazing the grinding wheel.
It is utmost important that grinding fluids are containing a low level of solid particles and tramp oil. Traditionally systems like; hydro cyclones, magnet filters, and most widely paper band filter have been used due to its better filtration quality. However, the paper filter system generates environmentally hazardous paper waste at expensive disposal costs.
Rolitone grinding fluid purification is a paper free filtration system that also has a built in evaporation cooling system that in some cases eliminate installation of external cooler.

Appearance (Neat)

Clear colorless liquid

Appearance ( 2.5% in DI water)

Clear colorless liquid

Specific Gravity @ 24℃




pH, ( 2.5% in DI water)


Solubility in water

100% miscible


Must clean up the system before Use

Dilute by water from 1:15 to 1:40

Use deionized water to dilute would be better.

Welcome to wholesale the high quality water based grinding fluids made in China from us. Our company, Rolitone Technology, is one of the leading water based grinding fluids suppliers in China who will offer you good after-sale service and timely delivery. With the aid of advanced technology and equipment, we won't let you down.


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