Mitsubishi JDMT120420ZDSR-JM VP30RT Milling Insert | MMC Japan
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JDMT120420ZDSR-JM VP30RT
Mitsubishi Materials | AJX Series Toughened High-Feed Milling
The Mitsubishi JDMT120420ZDSR-JM VP30RT is a specialized high-feed milling insert designed for the AJX12 series cutters. Engineered for the most demanding conditions, the VP30RT grade is the industry's answer to heavy interrupted cuts and unstable setups. While VP15TF focuses on wear resistance, VP30RT prioritizes impact toughness, making it the primary choice for roughing Stainless Steel, Alloy Steels, and heat-resistant superalloys under tough conditions.
Technical Specifications
| ISO Designation (Metric) | JDMT120420ZDSR-JM |
|---|---|
| ANSI Designation (Inch) | JDMT 434ZDSR-JM |
| Insert Size | 12 (For AJX 12 Type Cutters) |
| Corner Radius (RE) | 2.0 mm (.0787") |
| Grade / Coating | VP30RT (Miracle PVD Coated Tough Grade) |
VP30RT Tough Grade
The VP30RT grade is optimized for maximum fracture resistance. By using a high-toughness carbide substrate and the Miracle PVD coating, it significantly reduces the risk of sudden edge failure during interrupted milling or when machining through hard spots and scale on raw castings.
JM Chipbreaker Advantage
The JM (General Machining) chipbreaker on this JDMT insert features a strengthened edge. It is designed to sustain high feed rates while effectively controlling chips, preventing the "hammering" effect that can lead to vibration in high-feed milling operations.
Recommended Cutting Parameters
| Workpiece Material | Cutting Speed ($v_c$) | Feed Per Tooth ($f_z$) |
|---|---|---|
| Carbon Steel / Alloy Steel | 120 - 200 m/min | 1.0 - 2.2 mm/t |
| Stainless Steel (304/316) | 80 - 150 m/min | 0.8 - 1.5 mm/t |
AJX12 SYSTEM COMPATIBILITY
This insert fits all AJX 12 Type high-feed cutters, including arbor and shank types.
Shop AJX 12 Tool Holders →Metric vs. Inch Cross-Reference
| Feature | ISO: JDMT120420 | ANSI: JDMT 434 |
|---|---|---|
| Insert Length | 12.7 mm | 1/2" |
| Thickness | 4.76 mm | 3/16" |
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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.