Mitsubishi MLG2040L UTI20T Grooving Insert | MMC Japan
Free shipping on all orders.
Check compatibility: Confirm the model and dimensions before ordering.
Need help choosing? Contact us before ordering.
💰 Bulk savings 2-9 pcs · 6% OFF | 10+ pcs · 12% OFF
MLG2040L UTI20T
Mitsubishi Materials | Precision 4.0mm External Grooving Insert
The Mitsubishi MLG2040L UTI20T is a wide-profile indexable grooving insert designed for heavy-duty precision turning and small-part machining. Engineered specifically for the SMG series tool holders, this 4.0mm insert provides a stable, wide-groove solution with exceptional repeatability. Utilizing the UTI20T uncoated carbide grade, it delivers the sharpest possible cutting edge, making it the premier choice for machining aluminum alloys, copper, brass, and cast iron where thermal conductivity and anti-adhesion are critical.
Technical Specifications
| ISO Designation (Metric) | MLG2040L |
|---|---|
| Groove Width (CW) | 4.0 mm (.1575") |
| Hand of Tool | Left Hand (L) |
| Cutting Grade | UTI20T (Uncoated K-Type Carbide) |
UTI20T Carbide Performance
The UTI20T grade is an uncoated tungsten carbide optimized for non-ferrous material grooving. Its micro-grain structure facilitates an "up-sharp" edge that prevents built-up edge (BUE) in sticky materials. By avoiding PVD coatings, the tool maintains a tighter radius, essential for precision CNC grooving and high-quality surface finishes.
MLG Wide Geometry
The MLG geometry for 4.0mm widths is designed to handle increased chip loads. The rake angle is engineered for efficient chip breaking in wider grooves, preventing chip nesting which can mar the part surface. This insert is ideal for automatic lathe operations requiring wide undercuts or face grooving.
Recommended Cutting Parameters
| Workpiece Material | Cutting Speed ($v_c$) | Feed Rate ($f$) |
|---|---|---|
| Aluminum Alloys | 150 - 400 m/min | 0.05 - 0.25 mm/rev |
| Copper & Brass | 100 - 300 m/min | 0.05 - 0.20 mm/rev |
| Cast Iron (Gray/Ductile) | 60 - 150 m/min | 0.05 - 0.15 mm/rev |
HOLDER COMPATIBILITY
The MLG20 series insert is optimized for use with Mitsubishi SMG series external holders.
Shop SMG Series Holders →Metric vs. Inch Cross-Reference
| Dimension | ISO: MLG2040L | ANSI Equivalent |
|---|---|---|
| Groove Width | 4.0 mm | .157" (5/32" approx) |
| System Shank Fit | 20 mm Series | ~.787" Holder |
Need Help With Mitsubishi Inserts?
Looking for a Mitsubishi equivalent, alternative grade, or sample catalog? Our CNC specialists have helped 50+ manufacturers in aerospace, automotive, and medical machining source the right tooling at 30–50% lower cost than OEM prices.
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.