Tungaloy DCMT11T308-PS T9125 Turning Insert
Professional Steel Machining | Premium T9125 CVD Grade | Made in Japan
What is the most stable insert for high-feed steel finishing?
The Tungaloy DCMT11T308-PS T9125 is a high-performance CVD coated carbide turning insert designed for maximum stability in steel machining. Utilizing the advanced T9125 grade, this insert features a thick alumina layer that acts as a thermal shield, preventing heat from penetrating the carbide substrate during high-speed operations. The 0.8mm corner radius provides enhanced edge strength and allows for higher feed rates without compromising surface integrity. Equipped with the -PS chipbreaker (Polish Style), it ensures exceptional chip control in finishing and light-medium cutting. This Japan-made indexable turning tool is the ideal CNC machining solution for shops requiring long tool life and consistent performance in carbon and alloy steels. Integrating this long-tail keywords optimized insert into your production line will significantly reduce downtime and improve part quality.
Decoding the DCMT11T308-PS Technical Nomenclature
D
55° Rhombic
C
7° Clearance
M
M-Tolerance
T
Hole & Screw
11
11.6mm Edge
T3
3.97mm Thick
08
0.8mm Radius
-PS
Polish Style
Technical Specs: Metric vs. Imperial Comparison
| ISO Parameter |
Metric Unit |
Imperial Equiv. |
| ISO Model Name |
DCMT11T308-PS |
DCMT32.52-PS |
| Inscribed Circle (IC) |
9.525 mm |
3/8 inch |
| Corner Radius (RE) |
0.8 mm |
1/32 inch |
How does the T9125 grade improve CNC efficiency?
The T9125 Grade is the backbone of Tungaloy's steel turning lineup. It is engineered with "PremiumTec" surface technology, which creates a smoother coating surface to reduce friction and built-up edge. In precision machining, stability is key; the 0.8mm radius of this indexable turning tool offers superior resistance to edge chipping, even when encountering slight interruptions or variations in material hardness. The -PS chipbreaker creates a "sharp-yet-strong" cutting action, allowing for higher feed rates than 0.4mm versions while maintaining excellent chip evacuation. For any CNC machining facility, this translates to faster cycle times and more predictable tool replacement intervals.
Recommended Cutting Parameters (T9125)
-
Cutting Speed (Vc): 140 - 280 m/min (Steel)
-
Feed Rate (f): 0.08 - 0.25 mm/rev
-
Depth of Cut (ap): 0.5 - 2.0 mm
*Tip: The 0.8mm radius excels at higher feed rates. For optimal surface finish, ensure your feed is roughly 1/3 to 1/2 of the corner radius.*
Feedback from Global Machinists
⭐⭐⭐⭐⭐ "Workhorse for Alloy Steel" - James R., USA
"Running these on 4140 pre-hardened. The T9125 grade is incredibly stable and the 0.8mm radius lets me push the feed a bit more than usual. Great tool life."
⭐⭐⭐⭐⭐ "Reliable Japan Quality" - G. Müller, Germany
"Tungaloy never fails. These DCMT11T308 inserts provide a very consistent finish. The -PS breaker handles the chips perfectly even in gummy carbon steel."
⭐⭐⭐⭐ "Great for Heavy Finishing" - Akira H., Japan
"Used these for final passes on large shafts. Dimensional accuracy is maintained throughout the batch. Very stable grade."
⭐⭐⭐⭐⭐ "Reduced Chipping" - Matteo L., Italy
"Our previous inserts chipped on light interruptions, but the T9125 holds up much better. Excellent performance for the price."
⭐⭐⭐⭐⭐ "Genuine & Fast" - S. Bennett, UK
"Authentic Tungaloy stock. Fast delivery to our shop. These work perfectly on our CNC lathes for all steel components."
Technical Tooling Q&A
Q: Can I use T9125 for stainless steel?
A: While it can handle some stainless, T9125 is specifically optimized for steel. For stainless, we recommend PVD grades like AH725 to prevent work hardening and adhesion.
Q: What is the difference between 04 and 08 radius?
A: The 08 (0.8mm) radius has a stronger edge and allows for higher feed rates, whereas the 04 (0.4mm) is better for thin-walled parts or sharp corners.
Q: Which tool holder fits this insert?
A: Fits standard ISO holders like SDJCR/L 1212/1616 or internal boring bars such as S...-SDUCR11.
Expert Tip: Maximizing Tool Life
In precision machining, heat management is everything. CVD Coated Carbide (T9125) thrives when cutting speeds are sufficient to generate heat into the chip. Avoid running too slow, as this can lead to built-up edge on these premium CNC machining inserts.
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