Measurement & Fluids

Metalworking Fluids
thumb_metalworking_fluids.jpg Metalworking fluids are the oil- and water-based liquids that facilitate turning, milling, drilling and grinding. These fluids are often lumped together under the general term "coolant," though many metalworking fluids do not primarily perform a cooling effect. Rather, the primary value of many metalworking fluids is to provide lubricity that extends cutting performance and tool life, and to assist in clearing chips out of the way of the cut. Metalworking fluid technology has advanced considerably in recent years, to the extent that finding just the right cutting fluid for a particular machining process can dramatically increase efficiency or productivity.

Featured Zone Content

Long-Lasting Coolant Reduces Costs, Downtime


This shop provides a case in point of the substantial savings that can be realized with the proper coolant formulation. Rustlick Ultracut Pro, available from ITW Rocol North America, lasted twice as long in the sump than the shop’s previous coolant, leading to significant operating and maintenance cost savings.

Take good care of your coolant. Here's how.

Metalworking Fluid Troubleshooting Guide


Here are quick tips for solving the problems with your shop's most significant liquid asset.



Oelheld DiaGrind 535-5 grinding oil

Grinding Oil Limits Misting

By: Edited by Stephanie Monsanty
DiaGrind 535-5 grinding oil from Oelheld is produced from high-purity hydro-crack hydrocarbons with low aromatic content, and is free of chlorine and heavy metals.

Ensuring Accuracy by Containing Coolant

By: Peter Zelinski
One of the details that has been improved on a new cylindrical grinder is a casting design that isolates coolant from affecting the structure of the machine.

PRAB Guardian coolant recycling system

Coolant Recycling System Reduces Waste

By: Edited by Stephanie Monsanty
PRAB’s Guardian coolant recycling system is said to reduce fluid purchases by as much as 75 percent and reduce waste fluids by as much as 90 percent.

Air in Your Favor

By: Mark Albert
Blasting coolant through the spindle and out the end of the cutting tool is a great way to clear chips. Haas Automation’s Through-Tool Air Blast option can be an advantageous alternative.

PRAB Automatic Coolant Concentration Control

Monitoring System Automatically Adjusts Coolant

By: Edited by Stephanie Monsanty
PRAB’s Automatic Coolant Concentration Control (AC3) continually monitors coolant concentration levels and adjusts automatically.


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