Tungaloy SNMG120412-TM T9115 Carbide Turning Insert for Heavy Steel Machining

$80.46 USD

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Description

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

Technical FAQ & Buying Guide

Are your carbide inserts interchangeable with major brands like Sandvik, Iscar, or Kennametal?

Absolutely. Our CNC carbide inserts (including CNMG, WNMG, DNMG, and APMT series) are manufactured strictly adhering to international ISO/ANSI specifications. A CNMG 120408 from OYYU BEYOND will flawlessly fit any standard turning tool holder or indexable tool from major global brands like Sandvik Coromant, Kennametal, Iscar, Walter, or SECO, providing a highly cost-effective premium alternative without sacrificing tolerance or tool life.

How do I choose the correct insert grade and chipbreaker for machining Stainless Steel (M) vs. Carbon Steel (P)?

We offer optimized CVD and PVD multi-layer coatings for different ISO material groups:

  • For Carbon/Alloy Steel (ISO P): Choose our thick multi-layer CVD coated grades (e.g., Al2O3 + TiN). They provide exceptional crater wear resistance and thermal barriers during high-speed dry or wet roughing.
  • For Stainless Steel (ISO M): Choose our nano-structured PVD coated grades with sharp, positive chipbreakers (like -TM or -MA). This combination prevents work hardening and effectively controls sticky chips.
What are the recommended cutting speed (Vc) and feed rate (f) parameters to maximize tool life?

The optimal cutting parameters vary depending on the workpiece hardness and operation type:

  • For General Steel Turnings: Recommended cutting speed ($V_c$) ranges from 150 to 280 m/min, with a feed rate ($f$) of 0.15 to 0.45 mm/rev.
  • For Stainless Steel Finishing: Recommended cutting speed ($V_c$) is 120 to 200 m/min, with a feed rate ($f$) of 0.10 to 0.25 mm/rev.Always adjust parameters based on early wear patterns: increase $V_c$ if built-up edge occurs, or reduce $V_c$ if severe flank wear is observed.
Do you offer bulk discounts or wholesale pricing for machine shops and distributors?

Yes, we support machine shops, distributors, and global buyers with tiered wholesale pricing and competitive volume discounts. We also provide OEM custom manufacturing solutions for tool holders and carbide inserts based on your technical drawings. Contact our team to request a quick B2B quotation.

What is your international shipping policy and typical lead time for orders?

We provide secure worldwide express shipping (via DHL, FedEx, and UPS) with specialized, vibration-proof industrial packaging to ensure tools arrive in perfect condition. In-stock items are dispatched within 24-48 hours, while custom or bulk orders typically have a stable lead time of 15-25 days.

How do you guarantee the quality and tolerance precision of your CNC tools?

All our cutting tools and tool holders are manufactured strictly in accordance with ISO 9001 and international industrial standards. Every batch undergoes 100% rigorous quality control testing using high-precision optical measuring equipment to ensure reliable tool life and stable performance in continuous mass production.