Original Sumitomo AC4125K CNMA433 Carbide Turning Insert – Parallelogram 85° | Cast Iron CNMA433 AC4125K CNMA120412

Name: Original Sumitomo AC4125K CNMA433 Carbide Turning Insert - Parallelogram 85° | Cast Iron CNMA433 AC4125K
Brand: Sumitomo
SKU: CNMA433 AC4125K
Price: 15.79 USD
Availability: PreOrder
Rating: 5 (59 reviews)

Brand: Sumitomo

$15.79

★★★★★ 5 (59 reviews)

Turning Insert: CNMA433 AC4125K, Carbide – AC4125K, Absotech Finish, Neutral, 12.90 mm Long, 12.70 mm Inscribed Circle, 1.20 mm Corner Radius, 80.00 deg C – Diamond (Rhombic) 80-Deg, Series AC4125K

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Specifications
Brand	Sumitomo
Part No. (MPN)	CNMA433
Grade	AC4125K
Type	Turning Insert
Shape	Parallelogram 85°
Suitable Material	Cast iron
Category	Turning Inserts

Sumitomo AC4125K CNMA433 – Turning Carbide Insert

The Sumitomo AC4125K turning carbide insert, grade CNMA433, excels in rough machining of cast iron workpieces, thanks to its diamond coating which provides exceptional wear resistance and heat dissipation. With its parallelogram 85° shape and 1.20 mm corner radius, this insert is well-suited for removing large amounts of material quickly and efficiently, making it an ideal choice for heavy-duty turning operations. Its Absotech finish and neutral geometry allow for stable cutting performance, even in demanding applications.

What machinists are saying about AC4125K: Sumitomo Turning Insert: CNMA433 AC4125K, Carbide AC4125K, Absotech Finish, Neutral, 12.90 mm Long, 12.70 mm Inscribed Circle, 1.20 mm Corner Radius, 80.00 deg C – Diamond (Rhombic) … Features AC4010K / AC4015K Technologies for high-adhesion, crystal orientation control and residual stress control realise stable tool life for various types of cast iron, from grey cast iron (G

Key Specifications

Brand	Sumitomo
Model	AC4125K
Grade	CNMA433
Coating	Diamond
Insert Shape	Parallelogram 85°
Clearance Angle	7°
IC (Inscribed Circle)	4.1mm
Thickness	2.5mm
Workpiece Materials	Cast Iron
Application	Rough Machining
Geometry	Neutral
Quantity	1 PCS

Grade CNMA433 Performance Profile

Operators running cast iron with the Sumitomo CNMA433 typically report stable wear progression rather than catastrophic edge loss. The diamond system is the reason: it slows abrasion at the rake face while keeping the substrate from softening at the cutting zone.

Features & Benefits

100% Genuine Sumitomo – Original product with full quality guarantee, traceable batch.
Thermal Resistance – diamond layer holds hardness above typical cutting-zone temperatures.
Edge Stability – Substrate chemistry tuned to limit micro-chipping on cast iron interruptions.
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

Rough Machining of cast iron 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. Entry-tier pricing makes this a low-risk option for trialing Sumitomo tooling on a new material.

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 AC4125K Categories: Diamond 80° (CNMA), Insert, Turning Inserts Brand: Sumitomo

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Original Sumitomo AC4125K CNMA433 Carbide Turning Insert – Parallelogram 85° | Cast Iron CNMA433 AC4125K CNMA120412

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