Original Sumitomo CNMA432 BN250 Carbide Turning Insert – Diamond 80° CNMA120408

Name: Original Sumitomo CNMA432 BN250 Carbide Turning Insert - Diamond 80°
Brand: Sumitomo
SKU: CNMA432 BN250
Price: 81.36 USD
Availability: PreOrder
Rating: 5 (24 reviews)

Brand: Sumitomo

$81.36

★★★★★ 5 (24 reviews)

Turning Insert: CNMA432 BN250, PCBN – BN250, Bright/No Finish, Neutral, 0.5079″ Long, 0.5000″ Inscribed Circle, 0.0313″ Corner Radius, 80.00 deg C – Diamond (Rhombic) 80-Deg, Series CN

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

Confirm price / bulk pricing on WhatsApp

🚚Free worldwide shipping on all orders
⏱️Delivery in 15–30 days · express (DHL/FedEx) on request
🛃Free customs clearance handling & correct HS/NCM documents
💬Customer service replies within 24 hours, 7 days a week
✅100% genuine OEM — certificates available on request
🔒Guaranteed safe & secure checkout · 30-day money-back guarantee
📷Need test samples or real photos of this exact item? Just ask our team.

We accept

Verified on global marketplaces

Ozon★4.91,679 reviews · 5,188 ordersVerified store ↗AliExpress★4.898.9% positive · 4-year storeVerified store ↗Amazon US★5.0Verified store ↗

Specifications
Brand	Sumitomo
Part No. (MPN)	CNMA432
Grade	BN250
Type	Turning Insert
Shape	Diamond 80°
Category	Turning Inserts

Sumitomo CNMA432 BN250 – Turning Carbide Insert

Turning Insert: CNMA432 BN250, PCBN – BN250, Bright/No Finish, Neutral, 0.5079″ 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: Find Turning Insert: CNMA432 BN250, PCBN at MSC Industrial Supply, serving the metalworking, safety, and MRO industries for over 75 years CNMA432-BN250 is a continuout or mild interrupted CBN insert used for the cutting of 45 rc or harder steels and cast irons. CBN Turning InsertsPKG QTY 1 Sumitomo – CNMA432 Grade BN250 PCBN Turning Insert – Uncoated, 80° Diamond, 1/2" Ins

Key Specifications

Brand	Sumitomo
Model	CNMA432
Grade	BN250
Coating	tin
Insert Shape	Diamond 80°
Clearance Angle	0°
Workpiece Materials	General Materials
Application	Finish Machining
Geometry	Negative
Quantity	1 PCS

Grade BN250 Characteristics

Sumitomo BN250 uses tin coating tuned for finish machining 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.
Predictable Wear – Even flank wear pattern simplifies tool-life prediction and scheduling.
tin Coating – Superior wear resistance and extended tool life under continuous load.
QC Inspected – Each batch sampled for edge profile, dimensional accuracy, and coating adhesion.
Bulk Pricing Available – Discount tiers for production-volume orders; contact sales.
Optimized Chip Breaker – Engineered chip geometry reduces re-cutting and machine downtime.

Recommended Applications

Finish Machining of general materials in production CNC lines
Performs across a range of cutting speeds and feed rates
Effective in interrupted and continuous cutting passes
CNC lathe and machining center compatible

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.

Note: Compatible tool holders sold separately. Please confirm insert-holder seat compatibility (e.g. ISO seat designation) before ordering.

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

Related products

Chang Cheng CCMT060208-MM2 GW2020 Diamond 80° Steel CCMT212
$2.72

The CCMT060208 is a professional-grade carbide insert designed for carbon and alloy steel turning. Suitable for CNC lathes with appropriate tool holders. Recommended Vc 200-350 m/min roughing, 300-450 m/min finishing. Use through-coolant or high-pressure coolant for optimal results. Available from Hooguu.com with worldwide shipping and competitive pricing. SKU: CCMT060208-MM2 GW2020.

Add to cart
Gesac CNMA120408 GK1115 Diamond 80° CNMA432
$16.52

The GESAC CNMA120408 is a professional-grade carbide insert designed for general CNC turning and machining operations. Suitable for CNC lathes with appropriate tool holders. Recommended Vc 200-350 m/min roughing, 300-450 m/min finishing. Use through-coolant or high-pressure coolant for optimal results. Available from Hooguu.com with worldwide shipping and competitive pricing. SKU: CNMA120408 GK1115.

Add to cart
Mitsubishi CNMA643 MC5105 Diamond 80° CNMA190612
$47.33

The Mitsubishi CNMA643 is a professional-grade carbide insert designed for general CNC turning and machining operations. Suitable for CNC lathes with appropriate tool holders. Recommended Vc 200-350 m/min roughing, 300-450 m/min finishing. Use through-coolant or high-pressure coolant for optimal results. Available from Hooguu.com with worldwide shipping and competitive pricing. SKU: CNMA643 MC5105.

Add to cart
AKUMA CCMT432-MP1 Diamond 80° CT25M CCMT120408
$15.22

The CCMT432 is a professional-grade carbide insert designed for general CNC turning and machining operations. Suitable for CNC lathes with appropriate tool holders. Recommended Vc 200-350 m/min roughing, 300-450 m/min finishing. Use through-coolant or high-pressure coolant for optimal results. Available from Hooguu.com with worldwide shipping and competitive pricing. SKU: CCMT432-MP1 CT25M.

Add to cart

扫码添加微信

Scan to add WeChat

Cart

Your Cart is Empty

Back To Shop

Continue Shopping

Payment Details

Sub Total $0.00

Apply

View Coupons


                                    hooguu10

10% reorder discount — WhatsApp package-insert card (HOOGUU10)

View cart Checkout - $0.00

Cart

Original Sumitomo CNMA432 BN250 Carbide Turning Insert – Diamond 80° CNMA120408

What Buyers Say

Cart

Sumitomo 05-4 ST30E Brazed Carbide Tip | Steel

Sumitomo 08-4 ST40E Brazed Carbide Tip | Steel

Sumitomo 06-2 H2 Brazed Carbide Tip | Aluminium & Non-Ferrous & Cast Iron

Sumitomo 02-4 U10E Brazed Carbide Tip | Stainless Steel

Sumitomo 02-1 H1 Brazed Carbide Tip | Aluminium & Non-Ferrous & Cast Iron