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WALTER

WALTER is a German manufacturer of precision tooling for metal-cutting operations, with a product range that includes indexable turning inserts, boring bars, milling toolholders, parting and grooving inserts, and drill bits. The company, headquartered in Tübingen, Germany, has a history dating back to 1919 and is known for its focus on engineering-driven solutions for turning, milling, drilling, and threading applications. WALTER's product families cover a wide spectrum of machining processes, including external and internal turning, grooving, parting, and hole-making. Their inserts are available in various geometries, such as trigon (W), square (S), and diamond (C) shapes, with chipbreaker designs like MM5, RM4, and FK6, and substrate-coating combinations like WSM20S, WSM33S, WKP33S, and WKK10S. These grades are engineered for specific material groups, including steel, stainless steel, cast iron, and non-ferrous alloys, with coatings applied via chemical vapor deposition (CVD) or physical vapor deposition (PVD) to enhance wear resistance and thermal stability. WALTER also offers solid carbide and cobalt drill bits, such as screw-machine-length drills with parabolic flutes and 130° point angles, designed for chip evacuation in high-speed operations. The tooling is built to ISO and ANSI standards, with insert dimensions specified in inch and metric systems, and tolerances typically within IT class. 3G Electric supplies a broad inventory of WALTER products, including over 6,800 SKUs, covering standard and specialized tooling for industries such as automotive, aerospace, general engineering, and mold and die manufacturing. The catalog includes turning inserts for roughing, finishing, and medium machining, as well as parting and grooving inserts for cutoff and face grooving. Each product is identified by manufacturer part numbers (MPNs) and detailed specifications, enabling engineers and procurement specialists to match tooling to specific machine parameters, workpiece materials, and surface finish requirements. 3G Electric provides logistics support for global shipments, ensuring that WALTER tooling is accessible for maintenance, repair, and production operations worldwide.

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About WALTER

WALTER is a German manufacturer of precision tooling for metal-cutting operations, with a product range that includes indexable turning inserts, boring bars, milling toolholders, parting and grooving inserts, and drill bits. The company, headquartered in Tübingen, Germany, has a history dating back to 1919 and is known for its focus on engineering-driven solutions for turning, milling, drilling, and threading applications. WALTER's product families cover a wide spectrum of machining processes, including external and internal turning, grooving, parting, and hole-making. Their inserts are available in various geometries, such as trigon (W), square (S), and diamond (C) shapes, with chipbreaker designs like MM5, RM4, and FK6, and substrate-coating combinations like WSM20S, WSM33S, WKP33S, and WKK10S. These grades are engineered for specific material groups, including steel, stainless steel, cast iron, and non-ferrous alloys, with coatings applied via chemical vapor deposition (CVD) or physical vapor deposition (PVD) to enhance wear resistance and thermal stability. WALTER also offers solid carbide and cobalt drill bits, such as screw-machine-length drills with parabolic flutes and 130° point angles, designed for chip evacuation in high-speed operations. The tooling is built to ISO and ANSI standards, with insert dimensions specified in inch and metric systems, and tolerances typically within IT class. 3G Electric supplies a broad inventory of WALTER products, including over 6,800 SKUs, covering standard and specialized tooling for industries such as automotive, aerospace, general engineering, and mold and die manufacturing. The catalog includes turning inserts for roughing, finishing, and medium machining, as well as parting and grooving inserts for cutoff and face grooving. Each product is identified by manufacturer part numbers (MPNs) and detailed specifications, enabling engineers and procurement specialists to match tooling to specific machine parameters, workpiece materials, and surface finish requirements. 3G Electric provides logistics support for global shipments, ensuring that WALTER tooling is accessible for maintenance, repair, and production operations worldwide.

Common Applications

  • Automotive engine block machining — WALTER WNMG542-MM5 WSM20S turning inserts for cylinder bore finishing
  • Aerospace aluminum component turning — WALTER CCMT060208-FK6 WKK10S diamond inserts for high-speed finishing
  • General engineering cutoff operations — WALTER GX24-3E400N04-UA4 WKP33S parting inserts for steel bars
  • Mold and die steel grooving — WALTER GX16-2E300R6-CF5 WSM33S inserts for deep groove roughing
  • CNC lathe shallow hole drilling — WALTER A1148-1/16IN cobalt screw-machine drill bits for oil-hole drilling
  • Heavy equipment shaft turning — WALTER SCMT120408-RM4 square inserts for roughing of alloy steels

Frequently asked questions

Common questions about WALTER from 3G Electric.

What are the key specifications to consider when selecting a WALTER turning insert like the WNMG542-MM5 WSM20S?

When selecting a WALTER turning insert such as the WNMG542-MM5 WSM20S, consider the insert shape (trigon, W), size (e.g., 542 or 100608), chipbreaker geometry (MM5 for medium machining), and grade (WSM20S, a CVD-coated carbide for steel and stainless steel). The insert's inscribed circle diameter, thickness, and nose radius affect cutting forces and surface finish. Also verify the toolholder compatibility, as the insert's clearance angle and mounting style must match the holder's pocket. For the WNMG542-MM5 WSM20S, the MPN 7251999 provides a direct reference for ordering.

How does the WALTER GX24-3E400N04-UA4 WKP33S parting and grooving insert differ from standard grooving inserts?

The WALTER GX24-3E400N04-UA4 WKP33S is a parting and grooving insert designed for high-feed operations. Its key features include a width of 3 mm (3E400), a specific geometry (UA4) for chip control, and a grade (WKP33S) optimized for steel and stainless steel. Unlike standard grooving inserts, this model has a reinforced cutting edge and a chipformer that reduces cutting forces and improves chip evacuation during deep grooving or cutoff. The insert is indexable, with multiple cutting edges, and is compatible with WALTER's GX series toolholders.

What materials are suitable for machining with the WALTER CCMT060208-FK6 WKK10S diamond turning insert?

The WALTER CCMT060208-FK6 WKK10S is a diamond-shaped (CCMT) turning insert with a positive rake geometry and a FK6 chipbreaker for finishing operations. The grade WKK10S is a PVD-coated carbide designed for non-ferrous materials, such as aluminum alloys, copper, brass, and plastics. It is also suitable for machining hardened steels up to 48 HRC in light cuts. The insert's sharp edge and polished rake face reduce built-up edge and improve surface finish. For ferrous materials, consider grades like WSM20S or WSM33S.

Can WALTER screw-machine-length drill bits like the A1148-1/16IN be used in CNC lathes?

Yes, the WALTER screw-machine-length drill bit (A1148-1/16IN) is designed for use in CNC lathes and screw machines. With a 1/16-inch diameter, 130° point angle, and parabolic flute geometry, it is optimized for chip evacuation in high-speed drilling of steel, stainless steel, and cast iron. The cobalt construction provides heat resistance and edge retention. However, due to its short length (screw-machine length), it is best suited for shallow hole drilling (depth-to-diameter ratio up to 3:1) and should be used with rigid toolholding to minimize deflection.

What is the difference between the WALTER GX16-1E200N10-RF8 and GX16-2E300R6-CF5 WSM33S parting inserts?

The WALTER GX16-1E200N10-RF8 and GX16-2E300R6-CF5 WSM33S are both indexable parting and grooving inserts from the GX16 series, but they differ in geometry and application. The RF8 variant has a width of 2 mm (1E200) and a radiused cutting edge for general grooving, while the CF5 variant has a width of 3 mm (2E300) and a chipformer design for higher feed rates. The WSM33S grade is a CVD-coated carbide for steel and stainless steel, offering good wear resistance. The RF8 is suited for finishing cuts, whereas the CF5 is for roughing or medium machining.

How do I interpret the WALTER insert designation SCMT120408-RM4 for square turning inserts?

The WALTER insert designation SCMT120408-RM4 follows the ISO coding system for indexable inserts. 'S' indicates a square shape, 'C' denotes a 7° clearance angle, 'M' specifies a tolerance class (M class), and 'T' indicates a single-sided insert with a chipbreaker. '120408' refers to the insert size: 12 mm inscribed circle, 4 mm thickness, and 0.8 mm nose radius. 'RM4' is the chipbreaker geometry for medium to rough machining. The grade is not included in the designation; for the SCMT120408-RM4, it is typically paired with a grade like WSM20S or WSM33S, depending on the material.