CNMG120412-RM5 WMP20S WMP20S Wendeplatten - Walter Tools

Take advantage of the combination of Tiger·tec Silver coating and a robust RM5 chipbreaker to improve process stability and extend tool life when machining stainless steel; order directly via Metav Werkzeuge or consult our specialists for application support.

CNMG120412-RM5 WMP20S turning insert (CNMG120412-RM5 WMP20S) — for stainless steel | Walter Tools

The CNMG120412-RM5 WMP20S is a rhombic 80° turning insert designed for reliable, repeatable machining of stainless steel under medium to robust cutting conditions

• Tiger·tec Silver coated carbide for stainless steels
• Rhombic 80° geometry with 1.2 mm corner radius
• Robust RM5 chipbreaker for secure chip control
• Negative 0° rake for stable cutting under load

Improved performance for stainless‑steel turning

The combination of the WMP20S grade and Tiger·tec Silver coating is engineered to address typical challenges when machining stainless materials: high toughness, tendency to work‑harden and elevated cutting temperatures. The grade promotes stable chip formation and reduces built‑up edge, which helps to maintain a consistent cutting edge over longer runs. For production environments this translates into fewer tool changes and higher overall equipment effectiveness. The geometry of the insert supports reliable engagement and predictable tool life under varying feed rates.

Geometry and chip control that add reliability

The rhombic 80° shape, 1.2 mm corner radius and RM5 chipbreaker provide a controlled cutting profile that balances strength and finish. The negative 0° rake increases edge robustness and is particularly useful for interrupted cuts or heavy cross‑sections, while the RM5 chipformer shapes chips to avoid entanglement and promote safe evacuation. These characteristics make the insert suitable for use in automated turning centres where consistent chip flow and tool stability are essential for uninterrupted operation.

Practical benefits for workshop productivity

Integrating this insert into a turning process reduces downtime through longer intervals between changes and predictable wear behaviour. The coated carbide chemistry of the WMP20S grade supports thermal stability, which helps keep tolerances and surface quality within specification during extended machining cycles. For job shops and OEMs focused on cost per component, this combination delivers measurable savings via reduced rework, improved cycle times and more consistent surface finishes on stainless components.

Compatibility and application guidance

The insert’s CNMG form and standard size make it compatible with a wide range of toolholders and clamping systems used in conventional and CNC lathes. The specification is optimised for machining stainless steel materials under medium to heavy conditions; where material or process demands differ significantly, application testing or consultant guidance is recommended to select the ideal geometry and grade for the operation. Tool life and surface finish depend on cutting parameters, coolant strategy and machine stability, so matching these factors to the insert’s strengths will yield the best results.

Contact Metav Werkzeuge for application advice on Walter Tools turning inserts and fast availability — eMail: info@metav-werkzeuge.com | Tel: +49 2822 7131930

Technical data

• Article number: CNMG120412-RM5-WMP20S-WALTER
• Designation: CNMG120412-RM5 WMP20S
• Series: Tiger·tec Silver
• Grade: WMP20S
• Manufacturer: Walter Tools

Facts

• Geometry: Rhombus 80°
• Corner radius: 1.2 mm
• Size: 12
• Plate thickness: 04
• Rake angle: 0° (negative)
• Chipbreaker: RM5
• Tolerance class: M

Special features

• Coating: Tiger·tec Silver
• Carbide grade family: coated cemented carbide
• Application focus: stainless steel (ISO group M)
• Robust design for medium to robust cutting conditions
• Stable cutting edge and improved chip control

FAQ

What materials is this insert intended for?
The CNMG120412-RM5 WMP20S insert by Walter Tools is designed primarily for stainless steel (ISO group M) under medium to robust cutting conditions.

How does the RM5 chipbreaker affect machining?
The RM5 chipbreaker on the CNMG120412‑RM5 WMP20S improves chip control and reduces the risk of chip entanglement, supporting steady production and easier chip evacuation.

What advantages does the Tiger·tec Silver coating provide?
Tiger·tec Silver on the WMP20S grade enhances thermal resistance and edge stability, helping the insert maintain performance and surface quality during extended cuts in stainless steel.

Is the negative 0° rake suitable for interrupted cuts?
Yes, the negative 0° rake of this CNMG turning insert increases edge strength, making it well suited to interrupted cuts and heavier cross‑section machining.

Can the insert be used in standard CNMG toolholders?
The CNMG120412‑RM5 form is compatible with conventional CNMG toolholders; correct clamping and seat condition should be verified for secure assembly.

Manufacturer/Responsible: Walter Deutschland GmbH, Derendinger Straße 53, 72072 Tübingen

Protected trademarks and product names are the property of their respective owners. Brand names are mentioned solely for explanation. There is no affiliation between Metav Werkzeuge and the trademark owners. The offered item is an original, factory‑new product of the manufacturer.