Mitsubishi CNMG120412-GH UE6020 Heavy-Duty Steel Roughing Insert (10pcs)
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
CNMG120412-GH UE6020
The Roughing Specialist | 1.2mm Reinforced Edge | UE6020 Impact CVD
Engineered for Maximum Material Removal
UE6020 Grade (The Tough CVD Armor): The UE6020 is Mitsubishi's premium CVD-coated grade for P-Class (Steel). It is designed for reliability in unstable conditions. With a thick coating that acts as a thermal and mechanical barrier, it prevents the cracks and chipping often caused by the high heat and heavy vibrations of large-scale roughing.
GH Chipbreaker (Heavy-Duty Geometry): The GH chipbreaker is designed for high-feed roughing. It features a robust, negative rake "T-land" at the cutting edge. This reinforcement allows the insert to withstand massive cutting forces while ensuring that chips are broken into small, safe "6-shapes," even when taking deep cuts ($A_p$).
1.2mm (3/64") Edge Radius: The 12-radius is the powerhouse of the CNMG line. It provides significant edge strength, allowing you to push the feed rate ($f_n$) significantly higher than a 0.8mm radius, resulting in shorter cycle times and increased tool life in roughing.
Metric vs. Imperial Comparison
| System | Model Designation | I.C. (Inscribed Circle) | Thickness | Radius (RE) |
|---|---|---|---|---|
| Metric | CNMG120412-GH | 12.7 mm | 4.76 mm | 1.20 mm |
| Imperial | CNMG433-GH | 1/2" | 3/16" | 0.0472" (3/64") |
Heavy Roughing Parameters
*The GH geometry requires a minimum feed to activate chip control. It is optimized for high-productivity removal rates.
| Workpiece Material | Speed (Vc) | Feed (fn) | Depth (Ap) |
|---|---|---|---|
| Carbon Steel (AISI 1045) | 120 - 240 m/min | 0.30 - 0.65 mm/r | 2.00 - 6.00 mm |
| Alloy Steel (AISI 4140) | 100 - 190 m/min | 0.25 - 0.50 mm/r | 1.50 - 4.50 mm |
Compatible Tool Holders
Ensure maximum rigidity with DCLNR/L 12 and MCLNR/L 12 series holders:
Shop DCLNR 12 HoldersPro-Tip: UE6020 vs. MC6025
UE6020 (The Impact Specialist): Choose this for roughing castings or parts with heavy interruptions. Its safety factor against breakage is the highest in the Mitsubishi lineup.
MC6025 (The CNC All-Rounder): Choose MC6025 if you have a very rigid setup and want to increase cutting speeds for higher throughput in stable steel turning.
Search Keywords: CNMG120412-GH UE6020 price, Mitsubishi 1.2mm radius steel roughing, CNMG433-GH carbide, UE6020 feed rate for steel, GH chipbreaker vs MA chipbreaker.
Long-tail Keywords: Best carbide inserts for heavy steel roughing cuts, Mitsubishi UE6020 for interrupted turning, CNMG 120412-GH for hot rolled steel, buy Mitsubishi CNMG120412-GH online, heavy duty roughing inserts for CNC machines.
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.