Tungaloy SNMG120412-TM T9115 Turning Insert
High-Efficiency Steel Turning | Premium T9115 CVD Grade | Large 1.2mm Radius
What is the best carbide insert for heavy-duty steel turning with high feed rates?
The Tungaloy SNMG120412-TM T9115 is a robust, double-sided square carbide insert engineered for high-productivity machining of ISO P (Steel) and ISO K (Cast Iron). With a reinforced 1.2mm (0.047") corner radius and the specialized T9115 CVD coating, this insert is built for stability during medium-to-heavy turning operations. The -TM chipbreaker provides a versatile range of chip control, making it a "standard" choice for shops looking to reduce tool changes across varying steel alloys. 100% Made in Japan, it delivers high heat resistance and edge toughness for demanding CNC environments.
T9115 CVD Technology
Designed with a thick Al2O3 layer for maximum thermal protection. It allows for high cutting speeds (Vc) while resisting crater wear, even in dry machining conditions.
Reinforced 1.2mm Radius
The larger corner radius provides superior edge strength compared to 0.4 or 0.8 models, allowing for much higher feed rates and significantly improved tool life during roughing.
TM Universal Breaker
The -TM geometry is Tungaloy's most versatile breaker. It ensures efficient chip evacuation across a wide window of depths and speeds, reducing the risk of chip nesting.
Decoding SNMG120412-TM Technical Nomenclature
S
Square
N
0° Relief
M
Tolerance
G
Hole/Fix
12
12.7mm Size
04
4.76mm Thick
12
1.2mm Rad.
-TM
Med. Breaker
3. Technical Specifications: Metric vs. Imperial
| Parameter |
Metric (ISO) |
Imperial Equivalent |
| Inscribed Circle (IC) |
12.7 mm |
1/2" (SNMG 433) |
| Thickness (S) |
4.76 mm |
3/16" |
| Corner Radius (RE) |
1.2 mm |
3/64" |
| Insert Grade |
T9115 (CVD) |
High Speed Machining |
Recommended Cutting Parameters (T9115)
-
Cutting Speed (Vc): 150 - 350 m/min
-
Feed Rate (f): 0.20 - 0.60 mm/rev (Optimize for 1.2mm radius)
-
Depth of Cut (ap): 1.5 - 5.0 mm
*Note: Due to the 1.2mm radius, you can increase your feed rate significantly compared to a 0.8mm radius without sacrificing part strength.*
4. Product Applications
- External turning of large carbon steel and alloy steel shafts.
- Medium-to-heavy duty turning in oil & gas or automotive.
- Continuous high-speed machining where heat management is critical.
- B2B manufacturing requiring long tool life on roughing passes.
5. Tool Compatibility
Fits all Standard ISO Turning Holders (MCLNR, PSSNR, PSKNR series). Designed for SNMG 1204 pockets. Lever-lock or top-clamp systems are recommended for maximum rigidity.
7. Why Choose CNCHome-Beyond?
Genuine Tungaloy
100% Original Japanese Import
B2B Support
Expert Technical Assistance
Global Fulfillment
Fast & Secure Shipping
Bulk Inventory
Stocked for Large Orders
Global Customer Insights
⭐⭐⭐⭐⭐ "Brilliant Tool Life" - Steve R., UK
"Switching to the 1.2mm radius for our heavy steel roughing was a great move. The SNMG120412-TM T9115 is incredibly stable even when we push the feed rates to the limit."
⭐⭐⭐⭐⭐ "Original Tungaloy Reliability" - L. Müller, Germany
"Consistent performance across all boxes. The T9115 grade manages the heat perfectly on our 4140 steel turning jobs."
⭐⭐⭐⭐ "Great for Heavy Feed" - T. Yamamoto, Japan
"The TM breaker handles thick chips very well. Very low vibration even with high ap. Made in Japan quality is clear."
⭐⭐⭐⭐⭐ "Fast Shipping" - B. Tan, Singapore
"Genuine product and excellent service from CNCHome-Beyond. The technical data provided helped us reduce cycle time by 15%."
⭐⭐⭐⭐⭐ "Excellent Heat Resistance" - P. Rossi, Italy
"Even in dry cutting, the Al2O3 coating keeps the edge sharp. Perfect for our medium-heavy turning applications."
8. FAQ - Professional Support
Q: Why use a 1.2mm radius instead of 0.8mm?
A: The 1.2mm radius (12) has a stronger edge, making it less likely to chip during heavy cuts. It also allows for higher feed rates without compromising the tool's structural integrity.
Q: Is T9115 better than T9215?
A: T9115 is a proven, reliable standard for high-speed steel. T9215 is the newer generation with slightly higher toughness. Both are excellent for ISO P steel.
Q: Does this fit SNMG 433 holders?
A: Yes, SNMG 120412 is the metric ISO designation for the Imperial SNMG 433. They are identical in fit and function.
Expert Machinist Tip: Optimizing for the 1.2mm Radius
When using a **1.2mm corner radius**, ensure your depth of cut (ap) is at least equal to or greater than the radius for optimal chip control. This insert is designed to handle heavier mechanical loads; if your machine has the power, increase the feed rate (f) to maximize the **T9115's** productivity potential. Trust **Tungaloy Japan** for world-class CNC efficiency.
© Technical Data by cnchome-beyond.com - CNC Tool Authority
