Tungaloy RCMT0502MO-61 T9115 Insert
Round Positive Turning | 61 Finishing Breaker | Premium T9115 CVD Grade
What is the best round insert for high-speed steel turning?
The Tungaloy RCMT0502MO-61 T9115 is a high-performance round carbide turning insert engineered for efficiency in steel machining. Featuring the advanced T9115 CVD coated grade, this tool is designed to withstand high temperatures and provide exceptional wear resistance during continuous cutting. The 61 chipbreaker offers superior chip control for light-duty finishing to semi-finishing, preventing chip wrapping and improving surface quality. This Japan-made CNC turning insert is a versatile solution for profiling and high-feed machining where edge strength is paramount.
T9115 Premium Grade
Advanced CVD coating provides a thick Al2O3 layer for extreme heat resistance and long tool life in high-speed steel turning.
Excellent Chip Control
The 61 breaker is specifically designed for finishing, ensuring stable chip evacuation even at small depths of cut.
Robust Round Geometry
RCMT inserts offer the highest cutting edge strength, ideal for profiling and machining parts with varying diameters.
Decoding the RCMT0502MO-61 Technical Nomenclature
R
Round
C
7° Relief
M
Tolerance
T
Hole/Fixing
05
5mm Size
02
2.38mm Thick
MO
Detail
61
Breaker
3. Technical Specifications: Metric vs. Imperial
| ISO Parameter |
Metric Units |
Imperial Designation |
| Inscribed Circle (IC) |
5.0 mm |
0.197 inch |
| Thickness (S) |
2.38 mm |
3/32 inch |
| Corner Radius (RE) |
2.5 mm (Full Round) |
0.098 inch |
| Hole Diameter (D1) |
2.3 mm |
0.091 inch |
Recommended Cutting Parameters (T9115)
-
Cutting Speed (Vc): 180 - 450 m/min (Optimized for High Speed)
-
Feed Rate (f): 0.05 - 0.20 mm/rev (For finishing precision)
-
Depth of Cut (Ap): 0.2 - 1.2 mm
*Note: T9115 is ideal for continuous turning. For interrupted cuts, consider reducing cutting speed slightly.*
4. Product Applications
- High-speed profiling of carbon and alloy steels.
- Finishing passes on precision automotive shafts.
- Semi-finishing of small radii in mold components.
- Optimized for mass production of steel parts.
5. Tool Compatibility
Compatible with standard SRGCR/L or SRDCN turning tool holders designed for 5mm round inserts (Size 0502). Designed for modern CNC lathes with high spindle stability.
7. Why Choose CNCHome-Beyond?
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Global Verified Reviews
⭐⭐⭐⭐⭐ "High Speed Performance" - L. Becker, Germany
"We run these at 400 m/min on 1045 steel. The T9115 grade holds the edge beautifully even after hours of profiling."
⭐⭐⭐⭐⭐ "Perfect for Profiles" - K. Tanaka, Japan
"The RCMT round geometry is very strong. I use it for complex shaft radii and the finish is excellent."
⭐⭐⭐⭐ "Great Chip Evacuation" - James H., UK
"The 61 breaker breaks chips into small manageable pieces on light finishing passes. No more long tangles."
⭐⭐⭐⭐⭐ "Consistent Quality" - Marco S., Italy
"Consistent dimensions across the entire batch. Tungaloy Japan quality you can trust for high-volume orders."
⭐⭐⭐⭐⭐ "Fast Shipping" - A. Miller, USA
"Arrived quickly and performance was as advertised. Perfect fit for our SRDCN tool holder."
8. FAQ - Common Technical Questions
Q: Is T9115 suitable for interrupted cuts?
A: T9115 is optimized for continuous cutting at high speeds. For heavily interrupted cuts, a grade like T9125 might be more suitable due to higher toughness.
Q: Can I use this for stainless steel?
A: T9115 is specifically designed for general steel (ISO P). For stainless steel, we recommend Tungaloy grades like AH630 or AH645.
Q: What is the main advantage of the 61 chipbreaker?
A: It is designed for 'Light Cut' finishing. It minimizes cutting resistance, which helps in maintaining tight tolerances on slender workpieces.
Expert Insight: Premium T9115 CVD Grade
In high-speed CNC turning, the T9115 grade stands out with its thick Al2O3 layer which acts as a thermal barrier. This prevents crater wear and plastic deformation at the cutting edge, allowing the RCMT0502 to maintain precision and stability over long production runs on steel.
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