Kennametal NGD4189RK KCU25 Carbide Grooving/Parting Insert Steel KCU25B
Brand: Kennametal
$39.69
The Kennametal NGD4189RK KCU25B is a professional-grade carbide insert designed for grooving and parting-off 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: NGD4189RK KCU25B.
Machining Application KCU25
P SteelM Stainless steelK Cast iron
Kennametal grade — recommended for steel (P), stainless steel (M), cast iron (K).
Recommended cutting data
Group P — Carbon & alloy steels
- Low-carbon / structural steel (HB ≤ 200)
Vc: 180–320 m/min; f: 0.10–0.40 mm/rev; ap ≤ 4.0 mm - Alloy / quenched-and-tempered steel (HB 200–330)
Vc: 120–240 m/min; f: 0.10–0.35 mm/rev; ap ≤ 3.0 mm
Raise Vc for continuous cuts; lower it and pick a tougher chipbreaker for interrupted cuts.
Group M — Stainless steel
- Ferritic / martensitic (HB ≤ 220)
Vc: 120–200 m/min; f: 0.08–0.30 mm/rev; ap ≤ 3.0 mm - Austenitic 304 / 316 (work-hardening)
Vc: 90–160 m/min; f: 0.08–0.25 mm/rev; ap ≤ 2.5 mm
Flood coolant; avoid too low a feed to prevent work hardening.
Group K — Cast iron
- Grey iron (HB ≤ 240)
Vc: 120–280 m/min; f: 0.15–0.50 mm/rev; ap ≤ 4.0 mm - Ductile / nodular iron (HB 200–300)
Vc: 100–220 m/min; f: 0.12–0.40 mm/rev; ap ≤ 3.0 mm
Dry or minimal coolant works; mind the entry impact.
Figures are general reference ranges by ISO material group — adjust for tool geometry, machine rigidity and cooling. For exact recommendations refer to the manufacturer's data or contact us for a quote.
500 in stock
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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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We accept
| Brand | Kennametal |
|---|---|
| Part No. (MPN) | NGD4189RK |
| Grade | KCU25B |
| Suitable Material | Steel |
| Category | Grooving & Parting Inserts |
What Buyers Say
★★★★★
100% recomendados los insertos, y el paquete está llegando muy rapido
★★★★★
Товар доставлен, оригинальный, упаковка отличная! Всё полностью соответствует описанию.
★★★★★
По сырой стали пойдёт. Большой радиус при вершине, больше нагрузка.
★★★★★
A good product and the seller offered a nice discount
★★★★★
the product is like show in the picture
★★★★★
дошло быстрее чем заявлено. все супер
