Sandvik Coromant's new indexable drill, the DS20Click image to enlarge

Sandvik Coromant has introduced the CoroDrill DS20 indexable drill that it says is the first indexable drill concept capable of producing hole depths up to 7xD.

The drill, which includes completely new designs for both the body and inserts, provides users with reliable, predictable chip control and outstanding penetration rates in all 4–7xD applications, says Sandvik Coromant.

Replacing the existing CoroDrill 880 and CoroDrill 881 tools, 4–5xD CoroDrill DS20 indexable drills provide tool life improvements of up to 25 per cent and productivity gains up to 10 per cent, depending on workpiece material. The 6–7xD variants represent an entirely new capability range of indexable drills from Sandvik Coromant. To complement the introduction, the company is releasing a new Modular Drilling Interface (MDI) that acts as a coupling between the drill and adapter. Available in Coromant Capto and HSK shank types, the MDI provides high precision, excellent centering capabilities and reduced tool inventory.

CoroDrill DS20 indexable drills are both versatile and cost-efficient, increasing tool life and productivity in nearly all workpiece materials compared to current best-in-class concepts. No pilot drilling is needed.

The drill body is strong and fatigue-resistant with higher levels of stiffness than ever achieved before, while chip flute shapes are individually designed for each drill size and insert. This combination of factors leads to less vibration, predictable wear patterns and increased tool life. In addition, next-generation “double-step” technology reduces entry cutting forces by up to 75% compared to CoroDrill 880 tools, improving centering capabilities. Strong insert design and bulk strength provide extra toughness, with four true cutting edges on both center and peripheral inserts.

Regarding the new MDI, double centering with high fitting accuracy enables good run-out precision and optimal repeatability. Flange and surface contact between the drill body and nut provides increased stability and promotes hole quality. One size can be used for several drill diameters.

CoroDrill DS20 indexable drills are initially available in diameters .591 to 1.575 inch (15 to 40 mm) with a selection of shank types, insert sizes, grades and geometries to suit all material types and applications, including those found across the general engineering, automotive, oil and gas, pump and valve, and aerospace sectors. Additional diameters up to 2.559 inch (65 mm) will be added to the program.

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