Tungaloy DCMT070202-PS T9125 Turning Insert
High-Efficiency Steel Machining | Premium T9125 CVD Grade | Made in Japan
What is the best carbide insert for high-speed steel finishing?
The Tungaloy DCMT070202-PS T9125 is a professional-grade CVD coated carbide turning insert specifically engineered for medium-to-high speed steel machining. Utilizing the advanced T9125 grade, this insert features a multi-layered coating with high Al2O3 content, providing an excellent thermal barrier and extreme resistance to crater wear. The ultra-sharp 0.2mm radius is perfect for precision machining where tight tolerances and fine surface finishes are non-negotiable. Featuring the -PS chipbreaker (Polish Style), it excels in light finishing passes, offering stable chip control even in "gummy" carbon steels. This Japan-made indexable turning tool is the ideal CNC machining solution for operators seeking maximum tool life and productivity in high-volume environments. By using this long-tail keywords optimized insert, you ensure high dimensional accuracy across every workpiece.
Decoding the DCMT070202-PS Technical Nomenclature
D
55° Rhombic
C
7° Clearance
M
M-Tolerance
T
Hole & Screw
07
7.8mm Edge
02
2.38mm Thick
02
0.2mm Radius
-PS
Polish Style
Technical Specs: Metric vs. Imperial Comparison
| ISO Parameter |
Metric Unit |
Imperial Equiv. |
| ISO Model Name |
DCMT070202-PS |
DCMT21.50.5-PS |
| Inscribed Circle (IC) |
6.35 mm |
1/4 inch |
| Corner Radius (RE) |
0.2 mm |
0.008 inch |
Why is T9125 the standard for steel CNC turning?
The T9125 Grade represents Tungaloy's cutting-edge CVD technology. It is specifically balanced for versatility, offering high wear resistance for stable cutting and enough toughness to handle light interruptions. In precision machining, heat is the enemy; T9125 uses an "Alumina Layer" that reflects heat back into the chip rather than the tool. Combined with the -PS chipbreaker, this indexable turning tool provides a low-friction cutting action that prevents built-up edge. Whether you are running carbon steel or high-tensile alloy steel, this CNC machining insert delivers consistency you can rely on.
Recommended Cutting Parameters (T9125)
-
Cutting Speed (Vc): 140 - 280 m/min (Steel)
-
Feed Rate (f): 0.03 - 0.12 mm/rev
-
Depth of Cut (ap): 0.1 - 1.2 mm
*Note: For the 0.2mm radius, maintain lower feed rates to prevent premature edge wear and ensure a high-gloss finish.*
Feedback from Global Machinists
⭐⭐⭐⭐⭐ "Perfect for Small Parts" - Robert H., USA
"The 0.2mm radius on these Tungaloy inserts is a lifesaver for our medical precision parts. Surface finish on 1018 steel is like a mirror."
⭐⭐⭐⭐⭐ "High Speed, Low Wear" - Hans G., Germany
"T9125 is very stable at high speeds. We've seen a 25% increase in tool life compared to our previous brand. Excellent Japan quality."
⭐⭐⭐⭐ "Great Chip Breaking" - Takumi S., Japan
"PS chipbreaker works perfectly at light depths. Very reliable for finishing small internal diameters on CNC lathes."
⭐⭐⭐⭐⭐ "Very Consistent" - Giovanni B., Italy
"No surprises with Tungaloy. Every box performs exactly the same. Predictable tool life is vital for our automated shop."
⭐⭐⭐⭐⭐ "Fast Delivery & Original" - Sarah J., UK
"Genuine inserts. They handle alloy steel beautifully. Performance matches the technical specs perfectly."
Technical Tooling Q&A
Q: Can I use T9125 for stainless steel?
A: T9125 is optimized for steel. While it can handle some stainless, we recommend PVD grades like AH725 for superior performance in austenitic materials.
Q: Is CVD better than cermet for finishing steel?
A: Cermet gives a better finish at higher speeds, but CVD (T9125) is more versatile and much tougher for interrupted cuts or varying hardness.
Q: What tool holder fits the DCMT 0702 size?
A: It fits standard ISO holders like SDJCR/L 1010/1212 or internal boring bars like S...-SDUCR07.
Expert Tip: CVD Carbide for High-Volume Production
In precision machining, CVD Coated Carbide (T9125) is the ultimate choice for stability. It provides the heat resistance needed for long continuous cuts, ensuring your CNC machining process remains efficient and cost-effective.
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