MD838 & MD839 Supreme Circle Segment Cutters

April 03, 2021
Conical and Tangential Cost-Effective Finishing Circle Segment Cutters

Walter has introduced two solid carbide circle segment milling cutters, the MD838 Supreme (conical) and the MD839 (tangential) Supreme. They offer cost effective finishing because they are up to 90% faster than finishing with ball nose end mills. This is primarily due to the new geometry of the milling cutters, featuring large radii in the cutting area and a higher number of teeth. 

Higher productivity is gained not only due to the speed of these cutters, but also the greater number of teeth. Tough and reliable machining is obtained even with long overhangs to attain high component precision. Due to their specially developed geometries, both milling cutters are ideal for final machining of components with steep walls, deep cavities, prismatic surfaces and transition radii. The cutters are ideal in the energy industry, die and moldmaking, medical technology manufacturing, and aerospace, as well as general metalworking. 

The Walter MD838 Supreme (conical version) has an effective radius of 250-1000 mm, a corner radius of 0.5 - 4.0 mm and is available in diameters of 6-16 mm. Walter also offers a version of this tool with ConeFit exchangeable head. The MD839 Supreme (tangential version) has an effective radius of 100 mm, a corner radius of 1-4 mm and in diameters of 6-16 mm. The two circle segment milling cutters are available both in the WJ30RD grade, for steel or cast iron materials, as well as in WJ30RA for ISO M and S.

The Supreme lineup of products is one of three categories to Walter tools. Supremeindicates the highest level of technology and performance available. Others in the Walter lineup include Perform tools that are products that provide an economical solution with focused importance on price and Advance which indicates product efficiently balanced between price and performance.

Related Glossary Terms

  • gang cutting ( milling)

    gang cutting ( milling)

    Machining with several cutters mounted on a single arbor, generally for simultaneous cutting.

  • metalworking

    metalworking

    Any manufacturing process in which metal is processed or machined such that the workpiece is given a new shape. Broadly defined, the term includes processes such as design and layout, heat-treating, material handling and inspection.

  • milling

    milling

    Machining operation in which metal or other material is removed by applying power to a rotating cutter. In vertical milling, the cutting tool is mounted vertically on the spindle. In horizontal milling, the cutting tool is mounted horizontally, either directly on the spindle or on an arbor. Horizontal milling is further broken down into conventional milling, where the cutter rotates opposite the direction of feed, or “up” into the workpiece; and climb milling, where the cutter rotates in the direction of feed, or “down” into the workpiece. Milling operations include plane or surface milling, endmilling, facemilling, angle milling, form milling and profiling.

Additional Products from Walter USA LLC

Walter has unveiled the Walter Cut G1221-P, an innovative grooving boring bar with precision cooling, for recessing and internal grooving. This monoblock boring bar has two coolant holes.

Walter has introduced three new Walter Cut GX Tiger·tec Silver CVD grooving and parting grades—the WKP13S, WKP23S and WKP33S—for use on steel and cast-iron applications. These have been introduced in combination with Walter's geometries UD4, UA4, UF4, RD4 along with plunge grooving and parting…

Walter has introduced the M2136, a multitooth close-pitch finishing cutter that features a high degree of process reliability coupled with superior cost effectiveness, particularly with cast iron, thanks in part to its eight cutting edges per insert. These stable, negative inserts promote not only…

Walter says its new FM5 finishing and RM5 roughing indexable insert geometries deliver optimal cooling, longer tool life, and increased productivity in high-temperature alloy and stainless-steel machining. The new inserts owe their effectiveness, in part, to their "jet guiding geometry,"…

Walter has expanded the capabilities of its popular Walter BLAXX M3024 heptagon milling cutter with new wiper inserts. The inserts, which have two right-hand and two left-hand cutting edges, were specifically developed for the Walter BLAXX M3024, and allow it to be used for finishing operations.

Walter has added to its range of solid-carbide milling cutters with the introduction of its MC232 Perform product line. This versatile, cost-effective new cutter type is available with 2, 3 or 4 flutes, in a diameter range of 1/8 in. to 5/8 in. (2 to 20 mm).

Walter says it has introduced a new and innovative cutting geometry, the MS3, teamed with a new high tech grade, WSM01. The new WSM01 grade, manufactured using the HiPIMS (high-power impulse magnetron sputtering) method, provides extremely smooth surfaces that are characterized by excellent layer…

Walter has expanded the productive and cost effective Walter Titex Perform lineup of TC115/TC216 taps with an array of new sizes. The Perform lineup of products is one of three categories to Walter Titex threading tools. Perform tools are products that provide an economical solution with focused…

Walter has introduced the Walter Cut—Modular System G2612/2622, new SX system tools for deep grooving and parting operations that reportedly save time and cost. Suitable for all machine types, and for grooving and parting-off ranging from small to large diameters, the system allows users to simply…

Walter has introduced two new products for the DC150 drill lineup: 3xD and12xD, both with coolant through the tool body. The DC150 is positioned in the Perform line—a tough, versatile and cost effective Walter Titex family of solid-carbide drills. The two, new length-to-diameter ratio drills join…

PRODUCTS

11/20/2024
Jorgensen Conveyor and Filtration Solutions, Mequon, Wisconsin, highlighted its distinctive…

10/23/2024
The Starrett AVR400 offers full CNC capabilities including X-Y-Z positioning and comprehensive zoom…

10/23/2024
TIN Coated Thread Gages have high dimensionally stable HSS construction with TIN coating that…