Original Sumitomo CNMA433 BN250 Carbide Turning Insert – Diamond 80° | Steel & More CNMA120412

Name: Original Sumitomo CNMA433 BN250 Carbide Turning Insert - Diamond 80° | Steel &amp; More
Brand: Sumitomo
SKU: CNMA433 BN250
Price: 81.36 USD
Availability: PreOrder
Rating: 4.5 (38 reviews)

Brand: Sumitomo

$81.36

★★★★⯨ 4.5 (38 reviews)

Turning Insert: CNMA433 BN250, PCBN – BN250, Bright/No Finish, Neutral, 0.5079″ Long, 0.5000″ Inscribed Circle, 0.0469″ Corner Radius, 80.00 deg C – Diamond (Rhombic) 80-Deg, Series CN

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Specifications
Brand	Sumitomo
Part No. (MPN)	CNMA433
Grade	BN250
Type	Turning Insert
Shape	Diamond 80°
Suitable Material	Steel
Category	Turning Inserts

Sumitomo CNMA433 BN250 – Turning Carbide Insert

Turning Insert: CNMA433 BN250, PCBN – BN250, Bright/No Finish, Neutral, 0.5079″ Long, 0.5000″ Inscribed Circle, 0.0469″ Corner Radius, 80.00 deg C – Diamond (Rhombic) 80-Deg, Series CN

What machinists are saying about CNMA433: Find Turning Insert: CNMA433 BN250, PCBN at MSC Industrial Supply, serving the metalworking, safety, and MRO industries for over 75 years Find Turning Insert: 2MDCNMA433-BN250, PCBN at MSC Industrial Supply, serving the metalworking, safety, and MRO industries for over 75 years Sumitomo – 2MD-CNMA433 Grade BN250 PCBN Turning Insert – Uncoated, 80° Diamond, 1/2" Inscr Circl

Key Specifications

Brand	Sumitomo
Model	CNMA433
Grade	BN250
Coating	Uncoated
Insert Shape	Diamond 80°
Clearance Angle	0°
Workpiece Materials	Steel, Cast Iron, Hardened Steel
Application	Interrupted Cutting
Quantity	1 PCS

Why Grade BN250

Sumitomo’s BN250 sits between general-purpose and high-performance offerings — strong enough for production interrupted cutting on steel, cast iron, hardened steel, conservative enough to forgive the occasional spike in feed rate. Uncoated layer keeps cutting temperatures workable.

Features & Benefits

100% Genuine Sumitomo – Original product with full quality guarantee, traceable batch.
Precision Ground – Tight dimensional tolerances for repeatable performance across batches.
Uncoated Coating – Superior wear resistance and extended tool life under continuous load.
Ready Stock – In-stock for same-day dispatch from our CNC tooling warehouse.
Professional CNC Tooling – Compatible with major CNC machine brands (Mazak, DMG, Haas, Doosan).
Optimized Chip Breaker – Engineered chip geometry reduces re-cutting and machine downtime.

Recommended Applications

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

Buying Considerations

Single-pack option — useful for prototype runs or qualification before bulk commitment. Mid-tier pricing reflects Sumitomo’s production-grade tolerances rather than economy substrate.

Tip: Match this insert to a holder whose seat matches the ISO designation. If you’re unsure, send us the holder model and we’ll confirm compatibility before shipping.

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: CNMA433 BN250 Categories: Diamond 80° (CNMA), Insert, Turning Inserts Brand: Sumitomo

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Original Sumitomo CNMA433 BN250 Carbide Turning Insert – Diamond 80° | Steel & More CNMA120412

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