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WIDIA CNMG-UM Turning Inserts
WIDIA CNMG-UM Turning Inserts
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WIDIA CNMG-UM indexable turning inserts in WM25CT, WP25CT grades. The selected configurations cover 12.7 mm inscribed-circle sizes and 0.8 mm corner radii. WM25CT is listed for stainless steel. WP25CT is listed for cast iron, steel.
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Technical Specifications
Tool configurations
| Article ID | Configuration | Grade | ISO material groups | Inscribed circle D (mm) | Inscribed circle D (fractional in) | Cutting edge length L10 (mm) | Cutting edge length L10 (in) | Thickness S (mm) | Thickness S (fractional in) | Corner radius (mm) | Corner radius (fractional in) | Hole diameter D1 (mm) | Hole diameter D1 (in) | Inscribed circle D (in) | Thickness S (in) | Corner radius (in) |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 5645219 | CNMG120408UM | WP25CT | P, K | 12.7000 | 1/2 | 12.8960 | 0.5077 | 4.7630 | 3/16 | 0.8000 | 1/32 | 5.1600 | 0.203125 | 0.5000 | 0.1875 | 0.0310 |
| 4172381 | CNMG120408UM | WM25CT | M | 12.7000 | 1/2 | 12.8960 | 0.5077 | 4.7630 | 3/16 | 0.8000 | 1/32 | 5.1600 | 0.2031 | 0.5000 | 0.1875 | 0.0310 |
Compatible components
For article 4172381
Components are selected separately. Open a part number to review its specifications and add it to your quote.
Contact Tech Tool to confirm the complete assembly and package contents before ordering.
Technical documents
Compare With Similar Items
| Product | 
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|---|---|---|
| Description | WIDIA CNMG-UM indexable turning inserts in WM25CT, WP25CT grades. The selected configurations cover 12.7 mm inscribed-circle sizes and 0.8 mm corner radii. WM25CT is listed for stainless steel. WP25CT is listed for cast iron, steel. |
WIDIA WNMG0804 UM turning inserts in WM25CT and WP25CT grades. Compare 0.4, 0.8 and 1.2 mm corner radii in the listed WM25CT configurations, or the WNMG080408UM option in WP25CT. Each configuration retains its exact material number and manufacturer dimensions. |
| Price | Pricing by quote
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Technical guidance & FAQs
Applications and materials
Choosing a configuration
Compatibility and use
How do I identify the right CNMG-UM replacement?
Use the material number together with the full catalog designation and grade. For example, article 5645219 is CNMG120408UM in WP25CT. Preserve the required corner radius and thickness when comparing alternatives.
What should I include in my quote request?
Choose the exact insert configuration and quantity. Include the workpiece material and existing holder article if you need selection help. Add a matching holder or service component as a separate line when needed.
