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Dampened Fine-Boring Tool Improves Security, Productivity

Sandvik Coromant's new-generation CoroBore 825 dampened fine-boring tool system makes use of Silent Tools technology, with dampers dimensioned specifically to suit every adapter size in the assortment and provide enhanced performance for the user. "This solution not only elevates process security where vibration issues are frequently encountered, such as when machining with long overhangs, but also improves productivity since cutting data can be increased substantially," said a company spokesperson.

Among the principal updates in the latest-generation tool is the change of boring head material from steel to aluminum. In addition, the head has been shortened so that the damper comes closer to the cutting edge, which is beneficial for process stability.

"Internal channels are utilized to deliver coolant directly to the cutting edge, which is another factor that contributes to improved surface finish, higher penetration rates and greater process security," said Jenny Nilsson, Global Product Manager at Sandvik Coromant. "The new generation of tools will provide optimum performance and stability with one standard adaptive item on the machine tool side to bridge the tool into a steep taper, HSK or Coromant Capto spindle. Further extensions will reduce stability and performance."

The CoroTurn insert carriers for the tools have entering angles at 92° to 95°. This design increases stability due to reduced tool assembly deflection, making it possible to approach the bottom of a blind hole without engaging a greater part of the cutting edge.

CoroBore 825 is designed for all fine boring applications, covering diameters from 19 mm to 167 mm (0.748" to 6.575"), while a new assortment of cartridges can be utilized for back-boring applications. During back boring, the same internal coolant flow to the cutting edge is offered as in conventional boring.

For ease, the complete tool, comprising adapter and insert carrier, is delivered as a kit with a single product code.

For more information contact:

Sandvik Coromant

1702 Nevins Road

P.O. Box 428

Fair Lawn, NJ 07410-0428

800-SANDVIK / 201-794-5000

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