New 14mm to 15.99mm gundrills carrying inserts with 3 cutting edges.

ISCAR/UNITAC are expanding the lower diameter range of the GD-DH gundrills family by adding drills in the diameter range of 14mm to 15.99mm carrying a new TOGT 070304-DT insert and featuring 3-chip splitting cutting edges.

The TOGT 070304-DT insert features 3-chip splitting cutting edges, a positive rake chip-breaker and a wiper for high hole surface quality and high feed. The new insert is made from IC908, a versatile PVD coated grade.

The peripherally ground and highly accurate insert provides high hole diameter accuracy of IT10 and produces narrow chips for efficient chip evacuation, enabling higher feed rates compared to other drills available in the market. A wiper on the insert provides extra fine surface finish, and the direct insert mounting ensures that no adjustment is needed for an accurate hole diameter. It can carry new economical solid carbide or brazed guide pads.

The drills are now available in the diameter range of 14mm to 28mm and in 10, 15 and 25 drilling length to diameter ratios. Longer gundrills with up to 2 400mm length can be supplied on request.

UNITAC is an IMC Group company headquartered in Japan.

For further details contact Iscar South Africa on TEL: 011 997 2700 or visit www.iscar.com