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2007-06-04 News Release

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TENDO Hydraulic Toolholders – Ready for MQL

TENDO Hydraulic Toolholders from SCHUNK can be modified, reducing the amount of coolant used for Minimum Quantity Lubrication applications.

Upon request, TENDO Hydraulic Toolholders from SCHUNK can be modified for MQL applications. MQL is a metering technique that reduces the amount of coolant used to a minimum. Coolant consumption can be reduced to 0.01 gal/hour. The coolant is injected or sprayed into the working area between the tool and workpiece. The internal design of the toolholder components resemble a spray nozzle system. The coolant-air mixture is sprayed into the contact area of the cutting tool reducing friction and temperature. This evaporative process along with the flow of compressed air provides additional cooling of the tool.

Use of the MQL system results in a virtually coolant-free process. The coolant evaporates almost completely in the working area. In perfectly adjusted systems, swarf, workpiece and tools remain almost completely dry.

TENDO Hydraulic Toolholders – Ready for MQL. Click Here for High resolution image. photo: Schunk

MQL can be used in applications where friction needs to be reduced through the application of coolant. This process is ideal for drilling, deep hole drilling, milling, threading and turning.

The toolholder itself has a very important function in a successfully applied MQL system. The tool must be securely clamped while a constant flow of coolant is maintained from the spindle to the end of the tool. So called “dead areas“ or pockets inside the toolholder must be prevented. Minimum run-out and high repeating accuracy as well as high clamping forces and balance quality are imperative requirements for an MQL suitable toolholder.

SCHUNK group, operating in more than 50 countries, is a worldwide operating Technology Leader as the largest supplier of Chuck Jaws, Hydraulic Toolholding Systems and market leader for Grippers.

Read a recent press release about - Hydraulic fluid leak discovered at prestigious Doral golf course cleans up easily, hours later, with the first water-free lubricant formulated to eliminate turf loss.

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