Walter has expanded its solid carbide micro drill line with the addition of the DB131 Supreme micro pilot drill sizes and extended the DB133 Supreme micro drill offering to deep drills up to 30xD.
These new drills achieve process reliability combined with minimal dimensional variations and extended tool life in steel, cast iron, nonferrous, super alloys, hard materials and other materials (ISO P, K, N, S, H and O), according to the company. Stainless steel (ISO M) is added to the list with internal coolant capability. Tungsten Milling Cutter
Walter grades WJ30EL and WJ30ER provide wear resistance. A new type of flute design reliably evacuates chips, even with the tinniest drills. This capability ensures that hole depths up to 30xD can be easily achieved with the DB133 Supreme micro drill with its 140-degree point angle. The DB131 Supreme micro pilot drill features a 150-degree point angle.
Emulsion, oil, or minimum quantity lubrication (MQL) can all be used as a coolant with these drills. The new DB133 drills without internal coolant are available in a diameter range from 0.020-0.116 in. The diameter range for the micro drills with internal coolant is 0.028-0.116 in. Length to diameter ratios (L/D) of 5, 8, 12, 16, 20, 25 and 30xD are standard for micro drills with internal coolant and 5 and 8xD without internal coolant.
Walter Tools | www.walter-tools.com/us
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