DB131/DB133 Micro Carbide Drills

January 17, 2023
DB131/DB133 Supreme Solid Carbide Micro Drills Come With Internal and External Coolant Capability

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 30 x Dc. These new drills are critical to achieving maximum 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). Stainless steel (ISO M) is added to the list with internal coolant capability.

The use of Walter grades WJ30EL and WJ30ER ensures that the drills provide superior wear resistance. In addition, excellent surface finishes are due to the optimal cutting-edge preparation on the drill.

A new type of flute design reliably evacuates chips, even with the tinniest drills. This capability ensures that hole depths up to 30 × Dc can be easily achieved with the DB133 Supreme micro drill with its 140° point angle. The DB131 Supreme micro pilot drill features a 150° 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. (0.5-2.95 mm). The diameter range for the micro drills with internal coolant is 0.028-0.116 in. (0.7-2.95 mm). Length to diameter ratios (L/D) of 5, 8, 12, 16, 20, 25 and 30 × Dc are standard for micro drills with internal coolant and 5 and 8 × Dc without internal coolant. This new drill design is effective for applications in the medical, watchmaking, general mechanical engineering, mold and die making, energy and automotive industries.

The Walter lineup of products consists of three categories to tools. Supreme tools indicate the highest level of technology and performance available. Advance tools indicate product efficiently balanced between price and performance and Perform tools are products that provide an economical solution with focused importance on price ideal for small batch volume jobs.

Related Glossary Terms

  • alloys

    alloys

    Substances having metallic properties and being composed of two or more chemical elements of which at least one is a metal.

  • coolant

    coolant

    Fluid that reduces temperature buildup at the tool/workpiece interface during machining. Normally takes the form of a liquid such as soluble or chemical mixtures (semisynthetic, synthetic) but can be pressurized air or other gas. Because of water’s ability to absorb great quantities of heat, it is widely used as a coolant and vehicle for various cutting compounds, with the water-to-compound ratio varying with the machining task. See cutting fluid; semisynthetic cutting fluid; soluble-oil cutting fluid; synthetic cutting fluid.

  • emulsion

    emulsion

    Suspension of one liquid in another, such as oil in water.

  • point angle

    point angle

    Included angle at the point of a twist drill or similar tool; for general-purpose tools, the point angle is typically 118°.

  • wear resistance

    wear resistance

    Ability of the tool to withstand stresses that cause it to wear during cutting; an attribute linked to alloy composition, base material, thermal conditions, type of tooling and operation and other variables.

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Cast iron drilling has taken a significant step forward with an expanded insert range for new diameters in the high-speed Color Select P6005-WKK45C grade for Xtra·tec B401x point drills. These new inserts are available in diameters up to 1.50 in. (37.99 mm). With this expansion, the grade specially…

The new MC341 Supreme carbide shoulder/slot milling cutter from Walter is specially designed for extended tool life when machining steel and stainless steels. According to the company, yhe cutter delivers exceptional tool life, plus performance improvements of up to 100 percent thanks to the…

Walter has introduced its new Prototyp Advance line of solid-carbide milling tools for universal application. The new Advance milling cutter line consisting of six cutter types and 250 line items, each reportedly providing the ideal balance of hardness and toughness for the widest possible…

Walter says it has unveiled a technology that promises to dramatically improve machining effectiveness. Called Tiger·tec Gold, it is the latest iteration of Walter’s successful line of Tiger·tec and Tiger·tec Silver coatings.

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Walter has expanded its successful DC170 Supreme internally cooled, solid-carbide drill with the introduction of two new sizes, the 25xDc and 30xDc. These sizes extend the drill line, aimed at ISO material groups P, K, and H, to new depths, while keeping the performance enhancing benefits of the…

The RM5 stainless steel roughing geometry from Walter USA LLC features guided twin-channel coolant targeted at the chip. This provides maximum cooling and enhanced tool life for machining ISO M stainless steels and ISO S high-temperature alloys, according to the company.

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