Tungaloy DCMT070204-PS T9125 Turning Insert
High-Efficiency Steel Turning | Premium T9125 CVD Grade | Made in Japan
What is the best carbide insert for high-speed steel finishing?
The Tungaloy DCMT070204-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 versatile 0.4mm corner radius is perfect for precision machining where a balance of edge strength and fine surface finish is required. Featuring the -PS chipbreaker (Polish Style), it excels in light finishing passes, offering stable chip control even in 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 DCMT070204-PS Technical Nomenclature
D
55° Rhombic
C
7° Clearance
M
M-Tolerance
T
Hole & Screw
07
7.8mm Edge
02
2.38mm Thick
04
0.4mm Radius
-PS
Polish Style
Technical Specs: Metric vs. Imperial Comparison
| ISO Parameter |
Metric Unit |
Imperial Equiv. |
| ISO Model Name |
DCMT070204-PS |
DCMT21.51-PS |
| Inscribed Circle (IC) |
6.35 mm |
1/4 inch |
| Corner Radius (RE) |
0.4 mm |
1/64 inch |
Why is T9225 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): 0.05 - 0.20 mm/rev
-
Depth of Cut (ap): 0.2 - 1.5 mm
*Note: CVD coatings reach peak performance at higher speeds. Don't be afraid to push the Vc to improve surface finish.*
Feedback from Global Machinists
⭐⭐⭐⭐⭐ "Great for Mass Production" - Mark T., USA
"We run these on 1045 steel all day. The T9125 grade is incredibly stable and the tool life is about 20% better than what we used before."
⭐⭐⭐⭐⭐ "Stable and Sharp" - Hans F., Germany
"Very consistent performance in high-speed finishing. The 0.4mm radius is perfect for fine detail work. Original Japan quality."
⭐⭐⭐⭐ "Very Reliable" - Kenji O., Japan
"Good chip control even with low feed rates. Stable performance in our CNC lathes for alloy steel components."
⭐⭐⭐⭐⭐ "Beautiful Finish" - Luca P., Italy
"Zero built-up edge even after long runs. The CVD coating handles the heat very well. Excellent value for money."
⭐⭐⭐⭐⭐ "Authentic Quality" - Sarah M., UK
"Original Tungaloy stock. Fast delivery and performs exactly as promised. Our go-to for steel finishing."
Technical Tooling Q&A
Q: Can I use T9125 for stainless steel?
A: T9125 is optimized for steel. For stainless, PVD grades like AH725 are generally better at preventing work hardening and built-up edge.
Q: Is CVD better than PVD for steel finishing?
A: For high-speed, continuous finishing in steel, CVD (T9125) is superior due to its higher heat resistance. PVD is better for toughness and interrupted cuts.
Q: What tool holder fits this 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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