Sandvik Coromant Silent tools - application guide - Manual (Page 77)

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4. Boring
Boring range 25-150 mm (0.984–5.906 inch)
Boring depth 6 x DC (23.6–27.6 inch)
Hole tolerance IT9
Cutting fluid Internal
Insert size/types: 90°(0°) CoroTurn 107°, 75°(15°) CoroTurn 107°
DuoBore™ 821 rough boring tools
Dampened DuoBore adapters for roughing are designed with two
inserts for high productivity in boring applications against shoulders
and through holes. The tool can be assembled in three different
tool setups: Productivity, step-boring and single edge boring. Read
more on page 71.
Rough boring Fine boring
Boring range mm (inch)
Ø25-150 (0.98–5.9)
Boring range mm (inch)
Ø23-167 (0.90–6.6)
Boring range mm (inch)
Ø150-315 (5.9–12.4)
Dampened DuoBore™ Dampened CoroBore®825/826
Coromant Capto® back-end coupling
Coolant through