Original Sumitomo CNMA542-AC420K Carbide Turning Insert – Diamond 80° | Cast Iron CNMA150608

Name: Original Sumitomo CNMA542-AC420K Carbide Turning Insert - Diamond 80° | Cast Iron
Brand: Sumitomo
SKU: CNMA542-AC420K
Price: 23.91 USD
Availability: PreOrder
Rating: 4.8 (50 reviews)

Brand: Sumitomo

$23.91

★★★★⯨ 4.8 (50 reviews)

Turning Insert: CNMA542-AC420K, Carbide – AC420K, Al2O3 & TiCN Finish, 16.10 mm Long, 80.00 deg C – Diamond (Rhombic) 80-Deg, Series AC4000K

ⓘ Prices move with raw-material (tungsten / steel) market rates. Please confirm the current price with us before placing your order — thank you.

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Specifications
Brand	Sumitomo
Part No. (MPN)	CNMA542-AC420K
Type	Turning Insert
Shape	Diamond 80°
Suitable Material	Cast iron
Category	Turning Inserts

Sumitomo CNMA542-AC420K – Turning Carbide Insert

The Sumitomo CNMA542-AC420K turning carbide insert excels in finish machining operations on cast iron workpieces, leveraging its Al2O3 coating to minimize wear and produce a high-quality surface finish. With its 80° diamond shape, this insert is well-suited for precision turning applications where a sharp, rhombic edge is required to achieve the desired level of accuracy and surface finish. The AC420K grade, combined with the Al2O3 and TiCN coating, provides a strong balance of wear resistance and toughness, making it an ideal choice for demanding cast iron machining tasks.

Field reports & vendor notes: Sumitomo Turning Insert: CNMA542-AC420K, Carbide Al2O3 & TiCN Finish, 16.10 mm Long, 80.00 deg C – Diamond (Rhombic) 80-Deg, Series AC4000K Order Sumitomo CNMA542 Grade AC420K Carbide Turning Insert, 191R224 at Zoro.com. Great prices & free shipping on orders over $50 when you sign in or sign up for an account. Sumitomo Turning Insert: CNMA542-AC4015K, Carbide Al2O3 &am

Key Specifications

Brand	Sumitomo
Model	CNMA542-AC420K
Coating	Al2O3
Insert Shape	Diamond 80°
Clearance Angle	0°
Workpiece Materials	Cast Iron
Application	Finish Machining
Quantity	1 PCS

Features & Benefits

100% Genuine Sumitomo – Original product with full quality guarantee, traceable batch.
Edge Stability – Substrate chemistry tuned to limit micro-chipping on cast iron interruptions.
Thermal Resistance – al2o3 layer holds hardness above typical cutting-zone temperatures.
Professional CNC Tooling – Compatible with major CNC machine brands (Mazak, DMG, Haas, Doosan).
Ready Stock – In-stock for same-day dispatch from our CNC tooling warehouse.
Optimized Chip Breaker – Engineered chip geometry reduces re-cutting and machine downtime.

Recommended Applications

Finish Machining of cast iron 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: CNMA542-AC420K Categories: Insert, Turning Inserts, Diamond 80° (CNMA) Brand: Sumitomo

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Original Sumitomo CNMA542-AC420K Carbide Turning Insert – Diamond 80° | Cast Iron CNMA150608

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