Tungaloy TNGG160408L-C NS9530 Cermet Turning Insert for High-Surface Finish Steel
Tungaloy TNGG160404R-W NS9530 Cermet Turning Insert with Wiper Technology
Tungaloy TNGG160404R-P NS9530 Cermet Turning Insert for High-Speed Steel Finishing
Tungaloy TNGG160404R-C NS9530 Right-Hand Cermet Turning Insert for Steel Finishing
Tungaloy TNGG160404L-W NS9530 Cermet Wiper Insert for Steel Finishing
Tungaloy TNGG160404L-P NS9530 Cermet Turning Insert for Steel Finishing
Tungaloy TNGG160404L-C NS9530 Cermet Turning Insert for High-Precision Steel Finishing
Tungaloy TNGG160402R-P NS9530 Cermet Finishing Insert for Steel
Tungaloy TNGG160402R-C NS9530 Cermet Turning Insert for High-Gloss Steel Finishing
Tungaloy TNGG160402L-P NS9530 Cermet Turning Insert for High Gloss Steel Finishing
Tungaloy TNGG160402L-C NS9530 Cermet Turning Insert for High-Precision Steel Finishing
Tungaloy TNMG160404 / TNMG160408 T5115 CVD Coated Carbide Turning Inserts for Cast Iron
Tungaloy TNGA160404 / TNGA160408 LX11 Ceramic Turning Inserts for Cast Iron
TNMG160408-SF AH630 (10PCS)
Tungaloy TNMG160408-SM T6130 CVD Carbide Turning Insert for Stainless Steel
Tungaloy TNMG160408R-S T6130 Right-Hand CVD Carbide Turning Insert for Stainless Steel
Tungaloy TNMG160404R-S T6130 Right-Hand CVD Carbide Turning Insert for Stainless Steel
Tungaloy TNMG160408-SM AH725 PVD Carbide Turning Insert for Stainless Steel
Tungaloy TNMG160408-TM AH725 PVD Coated Carbide Turning Insert for Steel and Stainless
Tungaloy TNMG160408-TM T9115 CVD Coated Carbide Turning Insert for Steel Machining
Tungaloy TNMG160412-TM T9115 CVD Coated Carbide Turning Insert for Heavy Steel Cutting
TNMG160416 T9115 (10pcs)
Tungaloy TNMG220408L-S T9125 Left-Hand CVD Coated Carbide Turning Insert for Steel
Tungaloy TNMG220404R-S T9125 Right-Hand CVD Coated Carbide Turning Insert for Steel
About Tungaloy Negative Turning Inserts
Tungaloy negative turning inserts are precision-engineered carbide tools for heavy-duty CNC turning of steel, stainless, cast iron, and heat-resistant alloys. Negative inserts (N designation) have a hole in the center and can be flipped to expose a fresh cutting edge, doubling tool life compared to positive inserts. Tungaloy's negative insert family — CNMG (80° diamond), DNMG (55° diamond), WNMG (80° trigon), TNMG (60° triangle), and SNMG (90° square) — covers the full spectrum of roughing to finishing operations on medium-to-large workpieces.
Every Tungaloy insert on this page is genuine OEM product from Tungaloy Corporation (Japan, est. 1929, part of IMC Group), shipped with full lot traceability. CNCHome-Beyond is an authorized Tungaloy distributor; orders placed before 3 PM China time ship same-day from our Hangzhou warehouse with DHL/UPS/FedEx express delivery in 3-7 business days.
Tungaloy Negative Insert Geometries at a Glance
| Geometry | Shape | IC Sizes | Lead Angle | Best For |
|---|---|---|---|---|
| CNMG | 80° diamond | 12 / 16 / 19 mm | 0° | General purpose roughing to finishing on steel |
| DNMG | 55° diamond | 11 / 15 mm | 0° | Profiling, light roughing, finishing |
| WNMG | 80° trigon | 08 mm | 0° | Small-diameter turning, profiling |
| CNGA | 80° diamond (ceramic) | 12 mm | 0° | Hardened steel (HRC 55+), high-speed continuous cut |
Need to compare with other brand geometries? See our complete Insert Grade Cross-Reference Tool and SKU Cross-Reference for direct equivalents between Tungaloy, Mitsubishi, Sandvik, Kennametal, Iscar, Walter, and SECO.
Tungaloy Grade Reference for Negative Turning
| Grade | Coating / Material | Workpiece | Recommended Speed | Chip-Breaker Pairs |
|---|---|---|---|---|
| T9200 | CVD TiCN/Al2O3 thick | Steel heavy roughing (P20-P40) | 100-160 m/min | TM, TH, THS |
| T9125 | CVD TiCN/Al2O3 premium | Steel general purpose (P10-P25) | 120-200 m/min | TM, TH, THS, R-S, L-S |
| T9115 | CVD TiCN/Al2O3 | Steel finishing (P05-P15) | 150-220 m/min | TM |
| AH725 | PVD TiAlN nano | Stainless steel (M15-M30) | 80-160 m/min | SM |
| NS9530 | Cermet (uncoated) | Steel precision finishing (P05-P15) | 180-280 m/min | TS, 37, R-S, L-S |
| LX11 | Ceramic SiAlON | Hardened steel (HRC 55+), cast iron | 200-350 m/min | LX (ceramic) |
Tip: Use our Speeds & Feeds Calculator to dial in the exact cutting parameters for your specific grade, workpiece, and machine setup.
Tungaloy Chip-Breaker Reference
Chip-breaker geometry determines chip control, surface finish, and depth-of-cut capability. Tungaloy negative inserts ship with these chip-breakers:
| Chip-Breaker | Application | Depth of Cut | Feed Rate | Best With Grade |
|---|---|---|---|---|
| TM (medium) | General purpose medium cutting | 1.5-4.0 mm | 0.15-0.35 mm/rev | T9125, T9115 |
| TH (heavy) | Heavy roughing, high feed | 3.0-8.0 mm | 0.25-0.55 mm/rev | T9125, T9200 |
| THS (heavy sharp) | Heavy interrupted cuts | 2.0-5.0 mm | 0.20-0.45 mm/rev | T9125 |
| SM (PVD medium) | Stainless steel medium | 1.0-3.0 mm | 0.10-0.25 mm/rev | AH725 |
| TS (cermet sharp) | Steel precision finishing | 0.3-1.5 mm | 0.05-0.15 mm/rev | NS9530 |
| 37 (cermet light) | Steel light finishing | 0.2-0.8 mm | 0.04-0.10 mm/rev | NS9530 |
| R-S / L-S | Right/left hand single-ended | 1.0-3.0 mm | 0.10-0.25 mm/rev | T9125, NS9530 |
How to Choose a Tungaloy Negative Insert
Step 1: Match the geometry to operation. For profiling and 55° approach angles, choose DNMG. For heavy roughing on steel with high feed rates, choose CNMG in 19mm IC. For small-diameter work where insert clearance is limited, choose WNMG 08mm. For hardened steel finishing (HRC 55+), choose CNGA ceramic.
Step 2: Match the grade to material. Steel → T9125 (general), T9115 (finishing), T9200 (heavy roughing). Stainless → AH725. Hardened steel or high-temp alloys → LX11 ceramic. Precision finishing on steel → NS9530 cermet.
Step 3: Match the chip-breaker to depth of cut. Light finishing (0.2-1.5mm) → TS or 37. Medium (1.5-4mm) → TM. Heavy (3-8mm) → TH or THS. Use the table above to find the right combination.
Step 4: Match the holder. Tungaloy negative inserts fit the Mitsubishi/Tungaloy standard DCLNR/L, MCLNR/L, MWLNR/L, MDJNR/L, PCBNR/L tool holder families. CNCHome-Beyond carries compatible aftermarket holders at 30-50% below OEM — see our turning tool holder guide and use the Insert Holder Selector.
Compatible Tool Holders
Tungaloy negative inserts fit the following CNCHome-Beyond tool holder families (all ISO 5608 standard):
- Double-Clamp External Holders — for heavy CNMG/DNMG roughing
- Multi-Lock External Holders — for general CNMG/DNMG medium cutting
- Lever-Lock (P-Type) External Holders — for quick-change high-mix production
- Screw-Clamp Boring Bars — for internal turning with negative inserts
- Multi-Lock Boring Bars — for ID turning applications
Need help matching inserts to holders? Use our Insert Holder Selector Tool for a guided 3-step match.
Cross-Brand Equivalents to Tungaloy Negative Geometries
Tungaloy negative insert geometries are dimensionally interchangeable with other major brands. Direct equivalents:
| Tungaloy | Mitsubishi | Sandvik | Kennametal | Iscar |
|---|---|---|---|---|
| CNMG 120408 | CNMG 120408 | CNMG 120408 | CNMG 120408 | CNMG 120408 |
| DNMG 150608 | DNMG 150608 | DNMG 150608 | DNMG 150608 | DNMG 150608 |
| WNMG 080408 | WNMG 080408 | WNMG 080408 | WNMG 080408 | WNMG 080408 |
| CNGA 120408 (ceramic) | CNGA 120408 | CNGA 120408 | CNGA 120408 | CNGA 120408 |
Looking for a Mitsubishi or Sandvik equivalent at lower cost? See Mitsubishi negative turning inserts or Kyocera negative turning inserts for direct alternatives, and use our Insert Grade Cross-Reference Tool for grade-to-grade equivalents.
Frequently Asked Questions
What is the difference between Tungaloy T9125 and T9115?
T9125 is the main workhorse CVD grade for general purpose steel turning (P10-P25 ISO classification). T9115 is the finishing-grade with sharper cutting edge for finishing operations (P05-P15). T9125 has a thicker coating for longer tool life in roughing; T9115 has a sharper edge for better surface finish. Use T9125 for the bulk of production (80% of work) and T9115 for the final finishing pass.
When should I use NS9530 cermet instead of T9125 CVD?
NS9530 cermet is the right choice for precision steel finishing where you need: surface finish below 0.4 Ra, close tolerance (±0.01mm), high cutting speeds (180-280 m/min), and lower cutting forces. Cermet has better wear resistance than CVD at high temperatures but is more brittle. Do not use NS9530 for interrupted cuts, cast iron, or stainless steel.
What is the difference between Tungaloy CNMG and CNMA inserts?
CNMG has a chip-breaker groove on both faces; CNMA has a flat (no chip-breaker) on both faces. CNMA is used for heavy roughing with strong cutting forces and poor chip control conditions (deep cuts, tough materials). CNMG is for general purpose with chip control. This collection includes only CNMG-style inserts; CNMA is available on-demand for specialty applications — contact us for quote.
Can Tungaloy negative inserts be used for high-feed milling?
No — negative inserts are designed for turning (lathe) operations, not milling. The chip-breaker geometry and clearance angles are optimized for the chip flow pattern in turning. For high-feed milling, use Tungaloy SPMT or WPMT inserts specifically designed for milling. CNCHome-Beyond can source Tungaloy milling inserts on-demand — contact us for quote.
What is the equivalent of Tungaloy T9125 in other brands?
Tungaloy T9125 is a premium CVD TiCN/Al2O3 grade for general steel turning. Direct equivalents include: Mitsubishi US7020, Sandvik GC4325, Kennametal KC7315, Iscar IC8150, and Walter WSM20S. All perform within 5-10% of each other on standard steel turning. For grade cross-reference and detailed equivalent table, see our Insert Grade Cross-Reference Tool.
What is the minimum order quantity for Tungaloy negative turning inserts?
Sample orders start at 1 piece for grade validation. Standard production orders are 10-50 pieces per item. Bulk pricing tiers: 2-9 pieces 6% off, 10+ pieces 12% off (auto-applied at checkout). For custom grades not in our standard catalog, MOQ is 200 pieces with 6-8 week lead time from Tungaloy Japan. See our warranty and return policy for details on grade validation samples.
Related Tungaloy Collections
Order Tungaloy Negative Turning Inserts or Request a Quote
Need a grade or geometry not in our standard catalog? Send us a part number, grade spec, and quantity — we will return a formal quote within 24 hours. Custom Tungaloy geometries available on 6-8 week lead time.
CNCHome-Beyond — Authorized Tungaloy Distributor. Genuine OEM product, full lot traceability, same-day dispatch from Hangzhou for orders placed before 3 PM China time.
Want to know more about Tungaloy grades, coating technology, or chip-breaker selection? Read our CNC tooling knowledge base or check the complete cross-reference tool for grade-to-grade equivalents.