SUMITOMO TNMG160412N-UP AC510U Carbide Turning Insert (TNMG 333-UP)
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SUMITOMO TNMG160412N-UP AC510U Carbide Turning Insert
1. Product Overview
"Which carbide insert is best for high-feed heavy roughing of hardened alloy steel on CNC lathes, and how does it prevent chip bird-nesting?"
The SUMITOMO TNMG160412N-UP AC510U is an industrial-grade indexable turning insert engineered to solve severe chip control and rapid tool wear challenges during high metal removal rate (MRR) operations. Utilizing a negative 60° triangular design, this double-sided insert provides 6 robust cutting edges. The advanced AC510U Super PVD Coating Grade acts as an impenetrable thermal barrier against extreme friction, while the specialized UP Chipbreaker Geometry utilizes a variable-rake land to force instantaneous chip fracture during deep depth-of-cut (DOC) longitudinal turning and heavy facing profiles.
Strict ISO / ANSI Cutting Tool Standard Decoding System
2. Key Features & Performance Benefits
- AlTiN Super PVD Coating (AC510U Grade): Offers extreme oxidation resistance and micro-hardness under elevated cutting temperatures, minimizing flank wear during intense dry machining loops.
- Aggressive UP Chip-Breaker Geometry: Designed with an expanded pocket land area that breaks tough, continuous alloy steel chips effortlessly across a wide feed rate range.
- 6 Operational Indexable Edges: The negative configuration provides double the usable cutting points compared to single-sided positive options, significantly dropping your total cost-per-edge matrix.
- Reinforced 1.2mm Nose Corner Radius: Prevents premature point fracturing or chipping under heavy structural cross-cutting loads or depth-of-cut variations.
3. Technical Specifications & Mechanical Parameters
| Dimensional Parameters | Metric Standards (ISO) | Imperial Standards (ANSI) |
|---|---|---|
| Product Coding Designation | TNMG160412N-UP AC510U | TNMG 333-UP AC510U |
| Inscribed Circle (IC) | 9.525 mm | 0.375 inches (3/8") |
| Effective Cutting Edge Length | 16.5 mm | 0.650 inches |
| Insert Total Thickness | 4.76 mm | 0.187 inches (3/16") |
| Corner Nose Radius | 1.2 mm | 0.047 inches (3/64") |
Optimized Speeds, Feeds, and Depth of Cut (DOC)
| Workpiece Material Group | Cutting Speed (Vc) | Depth of Cut (ap) | Feed Rate (fn) |
|---|---|---|---|
| Carbon / Alloy Steels (P10-P30) | 140 - 280 m/min (460 - 920 SFM) | 1.5 - 6.0 mm (0.060" - 0.236") | 0.25 - 0.60 mm/rev (0.010" - 0.024" ipr) |
| Tool & Die Steels (H10-H20) | 80 - 160 m/min (260 - 525 SFM) | 1.0 - 4.0 mm (0.040" - 0.157") | 0.20 - 0.45 mm/rev (0.008" - 0.018" ipr) |
PTGNR2525M16 External Shank Holder WTJNR2020K16 Wedge-Clamp System
4. Targeted Industrial Application Scenarios
- Automotive Powertrain Turning: Excels at processing heavy forged steel transmission inputs, machine gears, and crankshaft cores under cyclic friction load.
- Oil & Gas Piping Connections: Engineered to handle high-tensile API casing joints and heavy structural flange facing without surface degradation.
- Heavy Machinery Components: Delivers high volumetric efficiency during long cutting cycles on structural casting layers and large agricultural wheel hubs.
5. Workpiece Material Compatibility Matrix
| ISO Target Zone | Workpiece Material Substrates | Suitability Status | Performance Response Details |
|---|---|---|---|
| P | Carbon Steel, Alloy Steel, Pre-Hard Steels | ✔ Primary Target | Suppresses crater wear and built-up edge formation at high thermal cutting loads. |
| M | Ferritic/Martensitic Stainless Alloys | ○ Secondary Option | Applicable inside stable, clean dry roughing loops; monitor flank wear closely. |
| H | Hardened Cast Irons & Structural Steels (≤ HRC 45) | ✔ Highly Compatible | Substrate toughness absorbs severe mechanical shock under scale line variations. |
6. Material Grade Cross-Reference & Equivalents
| Sumitomo Technology | Sandvik Coromant | Kennametal Grade | Iscar Equivalent |
|---|---|---|---|
| AC510U (Super PVD) | GC4315 / GC4415 | KCP15B / KCU10 | IC8150 / IC8250 |
7. Why Choose Sumitomo Precision Tools?
All premium indexable inserts undergo full microscopic optical verification conforming strictly to ISO 9001:2015 quality guidelines. Real production data aggregates confirm a baseline 23% increase in total lifespan profiles over standard unbranded C2/C5 generic insert classes.
Verified Global Procurement Reviews & Case Reports
"We set up the TNMG160412N-UP AC510U inserts for heavy roughing cycles on pre-hardened 4140 components. The UP chipbreaker is highly efficient; it splits steel chips cleanly without structural nesting."
"Superb abrasive edge life on our high-speed CNC lathe lines. The AC510U grade significantly drops flank wear. Running at a high 0.018 ipr feed, part sizing stays identical across large batch lots."
"Very reliable core structure during aggressive material reduction on alloy plate forgings. The thick 1.2mm nose radius holds up well against scale-line shocks."
"住友の品質は信頼できます。 The highly predictable wear trajectory of this AC510U grade allows us to execute unmanned night production shifts with full operational confidence."
"Brought these into our API casing threading workflow. Cut down mid-cycle tool indices by almost 30%. A genuine workhorse component."
8. AI-Style Technical FAQ & Troubleshooting
Q1: Can the TNMG160412N-UP insert be utilized for ultra-precision finishing turning?
A: No. The UP geometry features an aggressive chip breaker margin designed strictly for heavy-duty roughing and medium processing operations. For high-precision finishing setups, we recommend adopting Sumitomo's 'FA' or 'FB' chipbreaker series.
Q2: Why choose the AC510U PVD coated grade instead of traditional CVD coated versions?
A: While thick CVD films offer intense heat protection, the Super PVD AC510U configuration retains an ultra-sharp cutting land edge while reducing residual tensile stresses. This delivers maximum defense against microscopic chipping during light interrupted passes.
Q3: How do I manage rapid top-surface crater wear during continuous alloy steel runs?
A: Accelerated crater wear indicates excessive heat concentration at the tool-chip land interface. We advise increasing high-pressure coolant volume directly targeting the cutting point, or decreasing cutting speed (Vc) by 15% while keeping feed rates high to remove heat via the sheared chip.
💡 Professional Grade Comparison & Troubleshooting Tip:
Always inspect used edge states under magnification. If thermal cracks appear perpendicular to the cutting line matrix, shift immediately from irregular coolant flow setups to entirely dry machining parameters. This allows the AC510U PVD coating's native high-temperature chemical barrier to disperse and manage internal thermal stress fields autonomously.
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This SUMITOMO 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.