POLLEDRI NEWS FOR 2018, ANTI-VIBRATION COUNTERSINKS
From diameter 6.3 to diameter 31.0
ASYMMETRICAL GEOMETRY OF THE CUTTING EDGES
Decreases the axial force compared to the traditional countersinks, reducing the tool vibrations and giving a better finish of the countersinking
RECTIFYED RAKE ANGLE AND DIAMETER
The rake angle rectifyed to 20° and at constant value, grants a friction decrease and a great many regrinds
OPENED WIDE GROOVES
The high grooves distance between the three cutting edges with unequal division of the flutes, grants a better chip evacuation
TOP FINISHING AND PERFORMANCES
By the new range of POLLEDRI’S ANTI-VIBRATION countersinks 5% Co + AlTiCN 3500 HV

ANTI-VIBRATION COUNTERSINKS
SERIES 70.90A – 3 FLUTES 90° IN HSS-E 5% Co.

ANTI-VIBRATION COUNTERSINKS FOR ABRASIVE MATERIALS
SERIES 78.90A – 3 FLUTES 90° IN HSS-E 5% Co. + TiN 2300 HV

HIGH PERFORMANCE ANTI-VIBRATION COUNTERSINKS
SERIES 84.90A – 3 FLUTES 90° IN HSS-E 5% Co. + AlTiCN 3500 HV

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