Mitsubishi MLG1420L UTI20T Grooving Insert | MMC Japan
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MLG1420L UTI20T
Mitsubishi Materials | Precision 2.0mm Grooving & Small-Part Turning
The Mitsubishi MLG1420L UTI20T is a high-precision indexable grooving insert designed for small-diameter turning and automatic lathe operations. Specifically engineered for use with Mitsubishi SMG series tool holders, this insert provides a stable 2.0mm groove width with exceptional repeatability. Featuring the UTI20T uncoated carbide grade, it is the industry standard for machining non-ferrous metals, offering the sharpest possible cutting edge for aluminum, copper, and cast iron.
Technical Specifications
| ISO Designation (Metric) | MLG1420L |
|---|---|
| Groove Width (CW) | 2.0 mm (.0787") |
| Hand of Tool | Left Hand (L) |
| Cutting Grade | UTI20T (Uncoated Micro-Grain Carbide) |
| Compatible Holder | Mitsubishi SMG Series |
UTI20T Uncoated Sharpness
The UTI20T grade is an uncoated tungsten carbide grade optimized for non-ferrous material grooving. By removing the coating layer, the cutting edge remains "up-sharp," which is essential for preventing built-up edge (BUE) in sticky materials like aluminum. It provides excellent thermal conductivity and high wear resistance in cast iron machining.
MLG Precision Geometry
The MLG geometry is a precision-ground profile designed for small-part grooving. The rake angle is tuned to facilitate easy chip evacuation, preventing chip nesting in deep grooves. This geometry ensures that cutting forces are kept low, protecting the delicate shanks of 14mm grooving tools.
Recommended Cutting Parameters
| Workpiece Material | Cutting Speed ($v_c$) | Feed Rate ($f$) |
|---|---|---|
| Aluminum Alloy / Copper | 150 - 350 m/min | 0.03 - 0.15 mm/rev |
| Cast Iron (Gray/Ductile) | 80 - 150 m/min | 0.04 - 0.18 mm/rev |
| Hard Plastic / Brass | 120 - 300 m/min | 0.05 - 0.20 mm/rev |
HOLDER COMPATIBILITY
The MLG14 series is designed specifically for Mitsubishi SMG external grooving holders.
Shop SMG Tool Holders →Metric vs. Inch Dimensions
| Feature | ISO: MLG1420L | ANSI Equivalent |
|---|---|---|
| Groove Width | 2.0 mm | .078" |
| System Compatibility | 14 mm Series | ~.551" Shank Fit |
Technical FAQ & Buying Guide
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.
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.
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.
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.
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.
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.