Sandvik Coromant Silent tools - application guide - Manual (Page 41)

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3. Turning
Pressure and direction
For best tool life and process security, use coolant directed to the
cutting zone. For tools equipped with SL quick change heads, adjust-
ment of the coolant nozzles needs to be done manually, to ensure
that the coolant hits the cutting zone. For best results, use tools with
integrated coolant and several nozzles. This is equally important for
internal turning with long overhangs. To turn on and off the coolant
flow, use a hexagon key.
Clearance between the boring bar and the inside of the bore is
extremely important for chip evacuation and to avoid radial deflection.
For a bore diameter of 100 mm (3.94 inch), the applicable bar is 80
mm (3.15 inch). This gives enough clearance for chip evacuation and
will eliminate any damage to the tool and component.
Coolant can be applied through the rear of the boring bar using
common size connectors with British Standard Pipe (BSP) threaded
fittings. Sandvik Coromant dampened boring bars are equipped with a
pre-threaded coolant intake hole.