Mitsubishi CCMT09T304 UTI20T Uncoated Universal Carbide Turning Insert (10pcs)
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CCMT09T304 UTI20T
Universal Job-Shop Master | Uncoated Sub-Micron Carbide | 0.4mm Radius
Grade & Geometry Analysis
UTI20T Grade (Uncoated Toughness): UTI20T is a sub-micron grain carbide that prioritizes impact resistance and edge stability. Because it is uncoated, it maintains a sharper cutting edge than CVD-coated inserts, making it perfect for light-duty lathes or applications where high speeds cannot be reached. It is highly resistant to thermal shock, making it the safest choice for interrupted cuts.
0.4mm Precision Radius: The 04 (1/64") radius is the industry favorite for semi-finishing to finishing. It minimizes radial cutting forces, which is essential for preventing chatter in internal boring operations or when machining slender workpieces.
Metric vs. Imperial Comparison
| System | Model Designation | I.C. (Inscribed Circle) | Thickness | Radius (RE) |
|---|---|---|---|---|
| Metric | CCMT09T304 | 9.525 mm | 3.97 mm | 0.40 mm |
| Imperial | CCMT32.51 | 0.375" (3/8") | 0.156" (5/32") | 0.0157" (1/64") |
Recommended Cutting Parameters
*UTI20T is a "General Purpose" grade. Start with mid-range parameters and adjust based on vibration.
| Material Group | Speed (Vc) | Feed (fn) | Depth (Ap) |
|---|---|---|---|
| Low-Carbon Steel | 70 - 160 m/min | 0.05 - 0.20 mm/r | 0.20 - 1.50 mm |
| Alloy Steel / Iron | 50 - 130 m/min | 0.05 - 0.15 mm/r | 0.20 - 1.20 mm |
Compatible Tool Holders
Maximum versatility for SCLCR/L 09 series External Holders and Boring Bars:
Shop SCLCR 09 HoldersPro-Tip: UTI20T vs VP15TF
UTI20T (Uncoated): The Reliability Specialist. Use this when you have unstable setups, manual lathes, or varied materials. It is much tougher against edge-chipping than coated grades.
VP15TF (PVD): The Speed Specialist. Switch to VP15TF when you are running high-volume CNC production on Steel and need the coating to resist high-speed thermal wear.
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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.