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 |
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This Mitsubishi insert is in stock. 24-hour quote response. ISO 9001 certified. Ships from Hangzhou in 3–7 days.
Technical FAQ & Buying Guide
When choosing CNC cutting tools, check the full model code, dimensions, grade and selected variant before ordering. Do not rely on the product image alone.
For carbide inserts, tool holders, drills and end mills, compare the mounting dimensions, connection type and manufacturer's specifications with your holder or machine. If you are unsure, share your existing part number and machining application with us before ordering.
Check the product listing for the selling unit, pack quantity and included components. If it is unclear whether the price is per piece or per pack, or whether a tool body and inserts are sold separately, contact us before purchasing.
Select cutting speed, feed rate and depth of cut using the relevant manufacturer's recommendations for your tool model, workpiece material, machine conditions and coolant method. The same settings are not suitable for every product or application.
Our automatic quantity discount is 6% off for 2–9 items and 12% off for 10 or more items, based on the total product quantity in the cart. Other offers may not combine with this discount; check the applicable offer conditions.
According to our shipping policy, orders are typically processed and shipped within 1–3 business days after confirmation. Delivery generally takes 5–20 business days, depending on your destination and shipping method. Customs clearance or unforeseen delays may affect delivery times. A tracking number is sent by email after shipment.