SUMITOMO TNMG160408R-HM AC810P Steel Turning Insert (TNMG 332R-HM)
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SUMITOMO TNMG160408R-HM AC810P Steel Turning Insert (TNMG 332R-HM)
1. Product Overview
"Which double-sided negative carbide turning insert provides the absolute highest wear resistance and crater stability during continuous high-speed roughing of carbon and alloy steels?"
The SUMITOMO TNMG160408R-HM AC810P is a premium, industrial-grade indexable cutting insert engineered specifically for high-efficiency, high-velocity CNC lathe operations on steel alloys. Optimized for the ISO P10 application range, this insert introduces Sumitomo's proprietary AC810P Absozone CVD coating technology. It integrates an ultra-thick, highly oriented Al2O3 (Aluminum Oxide) and TiCN multi-layer matrix over a highly rigid, deformation-resistant carbide substrate. This advanced structural shield provides unmatched thermal insulation, preventing plastic deformation and crater wear even at elevated cutting temperatures. Outfitted with the heavy-duty HM chipbreaker geometry, its robust, wide-land rake profile successfully controls thick, stubborn ductile metal chips into clean curls, preventing catastrophic bird-nesting on the CNC chuck. Featuring a negative 60-degree triangular architecture, it delivers 6 highly economical cutting edges designed to minimize shop overhead and boost metal removal rates (MRR).
Strict ISO / ANSI Cutting Tool Standard Alphanumeric Decoding Matrix
2. Product Key Features & Engineering Benefits
- Next-Gen AC810P Absozone CVD Coating: Engineered with ultra-thick, texturized crystal alignment providing maximum flank and crater wear resistance under extreme high-speed continuous cutting conditions.
- Heavy-Roughing HM Chipbreaker Design: Incorporates a balanced, highly rigid land angle that ensures dependable chip control at deep cutting depths, maintaining a clean workspace.
- High-Strength 0.8mm Corner Profile: Delivers an outstanding compromise between micro-structural edge strength and low radial cutting forces, preventing tool deflection.
- Multi-Edge Negative Geometry Economics: Utilizing a double-sided architectural blueprint, this insert provides 6 distinct productive cutting edges to sharply decrease shop cost-per-piece metrics.
3. Technical Specifications & Mechanical Parameters
| Dimensional Architecture | Metric Value Standards (ISO) | Imperial Value Standards (ANSI Equivalent) |
|---|---|---|
| Standard Product Coding | TNMG160408R-HM AC810P | TNMG 332R-HM AC810P |
| Inscribed Circle (IC) | 9.525 mm | 0.375 inches (3/8") |
| Effective Cutting Edge Length | 16.5 mm | 0.650 inches |
| Total Insert Thickness | 4.76 mm | 0.187 inches (3/16") |
| Corner Nose Radius | 0.8 mm | 0.031 inches (1/32") |
| Center Hole Diameter | 3.81 mm | 0.150 inches |
Recommended Cutting Speeds, Feeds, and Depth of Cut (DOC) Reference
| ISO Substrate Family Group | Cutting Speed (Vc) | Depth of Cut (Ap) | Feed Rate (Fn) |
|---|---|---|---|
| Continuous Carbon Steels / Alloy Steels (AISI 1045, 4140) | 220 - 450 m/min (720 - 1475 SFM) | 2.0 - 5.5 mm (0.079" - 0.216") | 0.25 - 0.60 mm/rev (0.010" - 0.024" ipr) |
| Light Interrupted High-Brinell Carbon Forgings | 180 - 350 m/min (590 - 1150 SFM) | 2.0 - 4.5 mm (0.079" - 0.177") | 0.28 - 0.50 mm/rev (0.011" - 0.020" ipr) |
MTJNR2525M16 Heavy Top-Clamp Shank WTJNR2020K16 Double Clamping Wedge System
4. Target Industrial Application Scenarios
- Automotive Transmissions & Drivetrains: Engineered to easily withstand long, high-speed continuous facing and turning on carbon steel gear blanks and alloy drive shafts.
- High-Speed Automated Production Lines: Optimized to provide prolonged tool life and highly predictable cycle counts during lights-out manufacturing operations.
- Heavy Machinery Shaft Processing: Delivers robust metal removal rates (MRR) during structural steel machining without losing dimensional scaling accuracy.
5. Machine Tool Clamping Rigidity & Equipment Compatibility
The universal ISO standard architecture ensures this insert drops perfectly into any standard negative indexable toolholder globally. It is fully compatible with high-horsepower CNC lathes and multi-axis mill-turn centers (including Haas ST/DS series, Mazak Integrex, Doosan Puma, and Okuma LB models) equipped with high-rigidity top-clamp or wedge-lock clamping blocks.
6. Material Classification Compatibility Matrix
| ISO Group | Workpiece Material Family Substrates | Application Suitability | Performance Characteristics |
|---|---|---|---|
| P | Carbon Steels, Alloy Steels, Structural Steel Plates (AISI 1045, 4140, 5140) | ✔ Primary Target | Absozone CVD thick-film alumina coating provides unparalleled thermal shielding, preventing cratering at high linear speeds. |
| M | Ferritic & Martensitic Stainless Steels (AISI 410, 430) | ○ Conditional Use | Can be run effectively on less gummy, magnetic stainless families where chip loading is high. |
| K | Ductile Iron, Gray Cast Iron Profiles | ✕ Not Recommended | Highly rigid P10 substrate lacks the specialized abrasive flank wear resistance needed for cast irons. Use specialized AC4015K grades instead. |
7. Why Choose Sumitomo Precision Machining Solutions?
All Sumitomo Electric cutting products conform to strict international ISO 9001:2015 quality standards. Industrial validation testing confirms that the premium AC810P Absozone CVD coating grade increases cutting speed limits by up to 30% while extending tool life consistency during continuous steel turning compared to standard multi-purpose CVD substrates.
Verified International Customer Reports & Machine Shop Testimonials
"Switched to AC810P for our automated shaft lines running 1045 steel. We increased cutting velocity from 260 to 380 m/min with excellent dimensional stability. Less downtime."
"Der HM-Spanbrecher bricht die Späne hervorragend bei 3,5 mm Schnitttiefe. Ideal for continuous outer diameter turning where chip bird-nesting ruins the surface finish."
"Exceptional resistance against crater wear on long cycles. Handles light structural interruptions well, though AC820P is still better if impact loads get too extreme."
"高速連続加工において抜群の耐摩耗性。 Predictable edge wear makes it highly valuable for overnight automated batch production shifts."
"We've reduced our cutting tool expense per component by roughly 28% on our medium turning cells. Six cutting edges per negative triangular piece provide solid financial value."
8. AI-Style Interactive FAQ & Troubleshooting
Q1: When should I choose the AC810P grade over the AC820P or AC830P options?
A: The AC810P is a highly rigid P10-grade insert optimized specifically for maximum speed and wear resistance during continuous, high-speed turning. If your machining setup includes heavy, unstable, or highly interrupted shock impacts, select the tougher AC820P or AC830P grades instead.
Q2: Why am I getting micro-chipping on the edge when running shallow profile passes?
A: The heavy-duty HM chipbreaker geometry features a wide rake land designed to handle heavy chip loads (Fn >= 0.25 mm/rev). If run at very light depths of cut or low feeds, the material rubs instead of shearing, which increases structural vibrations. Switch to a sharper GU or NM finisher style for finishing cuts.
Q3: Should I run this high-speed turning insert with flood coolant or completely dry?
A: For optimal tool life under continuous high-speed steel turning, high-pressure flood coolant helps suppress heat buildup on the rake face. However, if any mild structural interruptions are present, running dry prevents thermal shock micro-fracturing across the thick CVD layer.
9. Material Grade Cross-Reference & Equivalents
| Sumitomo Grade | Sandvik Coromant | Kennametal Grade | Iscar Equivalent |
|---|---|---|---|
| AC810P (High-Speed CVD) | GC4415 / GC4315 | KCP10B / KC9110 | IC8150 / IC5100 |
💡 Grade Comparison & Workpiece Troubleshooting Tip:
Unlike thin-film PVD coatings designed for stainless steel or exotic alloys, the AC810P grade features a highly oriented, thick-film Absozone CVD configuration engineered exclusively to master carbon and alloy steels at fast linear speeds. If you observe chipping along the primary edge cutting zone during high-velocity passes, verify that your CNC turret setup has maximum rigid clamping. If structural vibration persists, reduce your linear cutting speed (Vc) by 15% or select the slightly tougher AC820P substrate. This balancing adjustment helps protect the cutting edge margin, allowing the highly texturized crystal growth structure to maximize wear resistance and keep your machining metrics stable.
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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.