Tungaloy VBMT110304-PS T9125 Insert
Universal Steel Machining | CVD Coated Durability | Precision Profiling
What is the most versatile insert for steel finishing and profiling?
The Tungaloy VBMT110304-PS T9125 is the industry's "All-Rounder" for steel turning. Featuring the advanced T9125 CVD grade with PremiumTec surface technology, this insert is engineered to balance extreme wear resistance with the toughness needed for slight interruptions. The 35-degree rhombic geometry provides the clearance necessary for intricate copying and profiling, while the 0.4mm corner radius ensures sharp detail and excellent surface Ra values. Whether you are running high-speed continuous passes or varied CNC job shop tasks, the VBMT110304-PS delivers consistent tool life and chip control in carbon and alloy steels.
T9125 PremiumTec Grade
A specialized CVD coating that reduces friction and prevents built-up edge, specifically designed for a wide range of steel machining (P10-P35).
-PS High-Sharpness Breaker
The "Positive Sharp" geometry offers low cutting resistance, preventing workpiece deflection on slender parts and maintaining tight tolerances.
Optimal Heat Resistance
The thick Al2O3 layer acts as a thermal barrier, allowing for higher cutting speeds without compromising the integrity of the carbide substrate.
Decoding VBMT 110304-PS Nomenclature
V
35° Rhom
B
5° Relief
M
Tolerance
T
Hole/Sinter
11
11mm Side
03
3.18mm Thk
04
0.4 Rad
-PS
Sharp
3. Technical Specifications: ISO vs. ANSI Standards
| Metric Description |
ISO (Metric) |
ANSI (Imperial) |
| Standard Model |
VBMT110304-PS |
VBMT 221-PS |
| Inscribed Circle (IC) |
6.35 mm |
1/4" |
| Thickness (S) |
3.18 mm |
1/8" |
| Corner Radius (RE) |
0.4 mm |
1/64" |
Machinist Recommended Cutting Data
-
Cutting Speed (Vc): 100 - 280 m/min (Standard: 180 m/min)
-
Feed Rate (f): 0.05 - 0.20 mm/rev
-
Depth of Cut (ap): 0.2 - 1.5 mm
4. Primary Applications
- Fine profiling and finishing of low to high carbon steels.
- Machining of alloy steels and tool steels under stable conditions.
- Copy turning for complex automotive and aerospace profiles.
- Boring operations where small diameter clearance is critical.
5. Tool Holder Compatibility
Fits all standard ISO VBMT 1103 pockets. Optimized for SVJCR/L external holders and SVUCR/L boring bars. Compatible with Citizen, Haas, Mazak, and Star CNC machines.
6. Tungaloy Steel Turning Grade Selection
| Grade |
Coating |
Best Use |
Machining Range |
| T9125 |
CVD |
Universal / General Steel |
Medium to High Speed |
| T9115 |
CVD |
High Speed Finishing |
Continuous High Temp |
| NS9530 |
Uncoated |
Mirror Finishing |
Super-Finishing |
7. Why Choose Beyond Li?
100% Original
Tungaloy Japan Official Stock
Technical Support
Application Engineering
Fast Worldwide
Express Logistics Partner
Feedback from the Shop Floor
⭐⭐⭐⭐⭐ "Workhorse Grade" - J. Weber, Germany
"T9125 is the most consistent grade I've used on 1045 steel. Tool life is predictable and the surface finish is excellent."
⭐⭐⭐⭐⭐ "Perfect for Swiss Turn" - S. Chen, Taiwan
"Using these for complex profiling on alloy shafts. The -PS breaker keeps chips small and avoids bird-nesting."
⭐⭐⭐⭐⭐ "Authentic Quality" - Mike D., USA
"Bought these from Beyond Li. They are original Tungaloy and outperformed the generic 'budget' inserts by 3 to 1."
⭐⭐⭐⭐⭐ "Great Heat Resistance" - E. Ivanov, Poland
"We run these at 220 m/min dry finishing and they hold the edge incredibly well."
⭐⭐⭐⭐⭐ "Highly Recommended" - B. Taylor, UK
"Fast shipping and the product is exactly as described. Standardizing all our VBMT 1103 pockets with T9125."
8. FAQ - Engineering Support
Q: Can I use T9125 on stainless steel?
A: T9125 is a steel (P) specialist. While it can do minor tasks in stainless, we suggest Tungaloy's AH600 series for better life in austenitic materials.
Q: Why choose the -PS breaker over the -TM breaker?
A: The -PS is a sharper finishing breaker, perfect for precision profiles and fine cuts, whereas the -TM is designed for medium-duty cutting.
Q: What tool holder is best for this insert?
A: For external work, use the SVJCR or SVLCR series. For boring, look for an E-SVUCR boring bar for maximum stability.
Expert Tip: Maximizing T9125 Life
To get the best out of the **T9125 grade**, maintain a stable cutting speed. If you see flank wear too early, increase the speed; if you see chipping, reduce the feed. The **PremiumTec** surface layer works best when it can generate enough heat to soften the chip but keep the edge sharp. **Tungaloy Japan** - Excellence in Finishing.
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