Silent Tools For Boring

• Productivity gains of 50-200%
• Strong dedicated interface between bridge and damped adaptor
• Improved surface finish
• Improved process security
• Reduced cost per component

• Silent Tools unique damper dedicated for long tool assemblies
• Strong dedicated interface between bridge and damped adaptor
• Internal coolant through the assembly
• The dedicated new lightweight bridges (to be used with damped adaptor) fit together with existing slides and cartridges for both rough and fine boring

• Boring operations: roughing and finishing
• Cutting data can be increased substantially thanks to eliminated vibrations

• Radial depth of cut up to 8 mm (0.315 inch) (16 mm (0.630 inch) diameter increase) in low alloy steel with twin edge rough boring equipment
• Maximum torque: 2000 Nm (1475 ft/lbs)

ISO application area

• The entering angle should be close to 90 degrees to give more axial cutting forces and less radial/tangential forces.
• Use large entering angles and small nose radii to reduce the radial forces, deflection and vibrations.
• Small nose radius is ideal for small depths of cut and decrease the risk of vibrations. Large nose radii have strong edge security and allow for heavy feeds and large depths of cut. The risk of vibration gets higher the larger nose radius you use. Therefore, triangular, positive style inserts are first choice for dampened boring operations.
• Use as light cutting units as possible to improve the dynamic behavior and effect of the damper.
• If possible, use a tapered shank
• Productive boring: Two inserts with the same length and diameter to be able to increase feed
• Step boring: Additional shim under one of the slides if you want to take a large radial cut
• Single-edge boring: Replace one of the slides with a cover to reduce cutting forces and achieve accurate roundness, good surface finish and close tolerances

Machine tools and spindle interfaces 
Machine tools and spindle interfaces need to be strong and stable to hold large tools and assemblies as CoroBore 826D XL. Suitable interfaces are therefore HSK 100 and Coromant Capto® C8 – C10. ISO 50 taper (BIG PLUS included) is too weak for these roughing tools.

Cutting data
The recommended start values for inserts and grades listed at the box shall be followed, but be aware of the many parameters that have to be taken into consideration – such as actual work piece material, spindle interface clamping force, torque capacity at given RPM, net power etc.