Original Sumitomo CNMA432 AC420K Carbide Turning Insert – Diamond 80° CNMA120408

Name: Original Sumitomo CNMA432 AC420K Carbide Turning Insert - Diamond 80°
Brand: Sumitomo
SKU: CNMA432 AC420K
Price: 14.33 USD
Availability: PreOrder
Rating: 4.6 (24 reviews)

Brand: Sumitomo

$14.33

★★★★⯨ 4.6 (24 reviews)

Turning Insert: CNMA432 AC420K, Carbide – AC420K, Coated Finish, 0.5790″ Long, 0.5000″ Inscribed Circle, 0.0313″ Corner Radius, 80.00 deg C – Diamond (Rhombic) 80-Deg, Series CN

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Specifications
Brand	Sumitomo
Part No. (MPN)	CNMA432
Grade	AC420K
Type	Turning Insert
Shape	Diamond 80°
Category	Turning Inserts

Sumitomo CNMA432 AC420K – Turning Carbide Insert

Turning Insert: CNMA432 AC420K, Carbide – AC420K, Coated Finish, 0.5790″ Long, 0.5000″ Inscribed Circle, 0.0313″ Corner Radius, 80.00 deg C – Diamond (Rhombic) 80-Deg, Series CN

What machinists are saying about CNMA432: The AC420K is a tough K20 grade that handles heavy depth of cut and interruptions. All grades are available with the Sumitomo FF Coating (Fine and Flat) for prolonged tool life and chipping … Looking for SUMITOMO, CNMA432, Diamond Turning Insert? Find it at Grainger.com®. With over one million products and 24/7 customer service we have supplies and solutions for every industr

Key Specifications

Brand	Sumitomo
Model	CNMA432
Grade	AC420K
Coating	tin
Insert Shape	Diamond 80°
Clearance Angle	0°
Workpiece Materials	General Materials
Application	Interrupted Cutting
Quantity	1 PCS

Grade AC420K Characteristics

Sumitomo AC420K uses tin coating tuned for interrupted cutting on general materials. The chemistry favors edge stability under interrupted cutting and resists thermal cracking on longer passes.

Features & Benefits

100% Genuine Sumitomo – Original product with full quality guarantee, traceable batch.
QC Inspected – Each batch sampled for edge profile, dimensional accuracy, and coating adhesion.
Bulk Pricing Available – Discount tiers for production-volume orders; contact sales.
tin Coating – Superior wear resistance and extended tool life under continuous load.
Predictable Wear – Even flank wear pattern simplifies tool-life prediction and scheduling.
Optimized Chip Breaker – Engineered chip geometry reduces re-cutting and machine downtime.

Recommended Applications

Interrupted Cutting of general materials in production CNC lines
Holds dimensional tolerance over multiple indexings (insert)
Designed for shop conditions typical of Sumitomo tooling users worldwide
Pairs well with through-coolant setups for chip evacuation

Buying Considerations

Single-pack option — useful for prototype runs or qualification before bulk commitment. Entry-tier pricing makes this a low-risk option for trialing Sumitomo tooling on a new material.

Reminder: Holder rigidity, lead angle, and approach all influence how this insert wears. Pair with a holder rated for the same cutting forces.

Weight	0.1 kg
Dimensions	15 × 18 × 4 cm

What Buyers Say

★★★★★

100% recomendados los insertos, y el paquete está llegando muy rapido

Lizeth Villasana Rosales, Mexico via aliexpress

★★★★★

Товар доставлен, оригинальный, упаковка отличная! Всё полностью соответствует описанию.

YUrij S., Russia via Ozon

★★★★★

По сырой стали пойдёт. Большой радиус при вершине, больше нагрузка.

Vladimir G., Russia via Ozon

★★★★★

A good product and the seller offered a nice discount

Michael, American via Amazon

★★★★★

the product is like show in the picture

Jose, American via Amazon

★★★★★

дошло быстрее чем заявлено. все супер

Mariya R., Russia via Ozon

SKU: CNMA432 AC420K Categories: Diamond 80° (CNMA), Insert, Turning Inserts Brand: Sumitomo

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Original Sumitomo CNMA432 AC420K Carbide Turning Insert – Diamond 80° CNMA120408

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