TaeguTec CNMG120404 TT7015 | Carbide Turning Insert for Cast Iron
TaeguTec CNMG120404PC TT9225 | Versatile Steel Finishing Insert
TaeguTec CNMG120404PC TT9215 | High-Speed Steel Finishing Insert
TaeguTec CNMG120404PC TT8115 | Precision PVD Turning Insert
TaeguTec CNMG120404MT TT8125 | Carbide Turning Insert for Steel
TaeguTec CNMG120404MT TT8115 | PVD Carbide Insert for Stainless Steel
TaeguTec CNMG120404 TT7015 | Carbide Turning Insert for Cast Iron
TaeguTec CNMG120404MT TT5080 | Heavy-Duty Cast Iron Turning Insert
TaeguTec CNMG120404MT CT3000 | Cermet Turning Insert for Finishing
CNMG120404MP TT5080 (10pcs)
TaeguTec CNMG120404ML TT9225 | Professional Steel Turning Insert
TaeguTec CNMG120404ML TT8125 | Carbide Turning Insert for Steel
TaeguTec CNMG120404ML TT8020 | Stainless Steel & Super Alloy Insert
TaeguTec CNMG120404ML TT5100 | Precision Cast Iron Turning Insert
TaeguTec CNMG120404ML TT5080 | Tough Cast Iron Turning Insert
TaeguTec CNMG120404FG TT8125 | Carbide Finishing Insert for Steel
TaeguTec CNMG120404FG TT5100 | Precision Cast Iron Finishing Insert
TaeguTec CNMM120408RH TT8125 | Heavy Roughing PVD Turning Insert
TaeguTec CNMG190612 TT5100 | Heavy Duty Cast Iron Turning Insert
TaeguTec CNMG190612EM TT9080 | Heavy-Duty PVD Stainless Turning Insert
TaeguTec CNMG190608EM TT9225 | Heavy-Duty CVD Stainless Turning Insert
TaeguTec CNMG190616RT TT8020 | Heavy Roughing PVD Turning Insert
TaeguTec CNMG190612RT TT5100 | Heavy-Duty Cast Iron Turning Insert
TaeguTec CNMG160612RT TT5100 | Heavy-Duty Cast Iron Turning Insert
TaeguTec Negative Turning Inserts — CNMG / WNMG / TNMG / DNMG (202 SKUs)
Browse the CNCHome-Beyond TaeguTec negative turning insert catalog — 202 genuine carbide inserts in 6 industry-standard ISO 1832 geometries with 0° negative clearance (double-sided inserts with up to 8 cutting edges per insert). Main geometries include CNMG (80° rhombic), WNMG (80° trigon), TNMG (60° trigon), and DNMG (55° rhombic), plus VNMG and SNMG. All inserts are sourced directly from TaeguTec's authorized Korean production line (Daegu, IMC Group sister company to Iscar since 1989) and shipped from our Hangzhou warehouse at 30–50% below OEM list price. TT9030 (PVD TiAlN, stainless) and TT8020 (PVD TiN, steel) grades available. ISO 1832 standard sizing — dimensionally interchangeable with Sandvik, Mitsubishi, KORLOY, and Tungaloy equivalent inserts.
4 Main ISO Negative Geometries in This Catalog
| Geometry Code | Shape & Edges | Best For | Common Tool Holders |
|---|---|---|---|
| CNMG | 80° rhombic, 0° negative, double-sided (8 cutting edges) | Universal external turning; heavy roughing on steel & stainless (most common negative geometry) | PCLNR/L, MCLNR/L, DCLNR/L |
| WNMG | 80° trigon, 0° negative, double-sided (6 cutting edges) | General roughing; strong radial; high feed rates | PWLNR/L, MWLNR/L, DWLNR/L |
| TNMG | 60° trigon, 0° negative, double-sided (6 cutting edges) | Profiling, taper turning, internal boring; stronger radial than CNMG | PTFNR/L, MTFNR/L, DTFNR/L (external); MTUNR/L boring bars (internal) |
| DNMG | 55° rhombic, 0° negative, double-sided (8 cutting edges) | Profiling, copy turning; stronger radial reach than CNMG | PDJNR/L, MDJNR/L, DDJNR/L |
Negative vs Positive Turning — When to Use Each
Negative Inserts (this collection)
0° negative rake — strong cutting edge
- Strong edge geometry, higher load tolerance
- Best for heavy roughing & interrupted cuts
- Best for high-rigidity machine tools
- Higher feed rates possible (0.3-0.5 mm/rev)
- Larger IC = more cutting edge options
- Double-sided = 2x more cutting edges per insert (8 vs 4)
- Lower cost per edge (more edges to use)
Positive Inserts (sibling collection)
7° positive rake — sharp cutting edge
- Low cutting force
- Low power consumption
- Best for thin-walled parts & low-rigidity setups
- Best for finishing passes & small parts
- Best for Swiss-type / sliding-head lathes
- Smaller IC = lower load per tooth
TaeguTec Grade Cross-Reference
| TaeguTec Grade | Coating | ISO Application | Recommended For | Equivalent In |
|---|---|---|---|---|
| TT9030 | TiAlN PVD | M15–M25 stainless, S15–S25 high-temp alloys | Stainless steel & Inconel turning (best wear resistance) | Mitsubishi US7020, Sandvik GC2040, KORLOY PC9030 |
| TT8020 | TiN PVD | P15–P25 steel | General carbon steel & alloy steel turning (most popular grade) | Mitsubishi VP15TF, Sandvik GC4325, KORLOY NC3030 |
Browse Related Collections
↳ Same-brand (TaeguTec) sub-collections + cross-brand equivalents + cross-brand traffic hubs
- TaeguTec brand page — company background, full grade catalog, IMC Group context, contact engineers
- TaeguTec master catalog — all TaeguTec indexable inserts (turning + milling + drill + others)
- TaeguTec milling inserts (16 SKUs) — APMT / APKT / SOMT / LNMU / PNMU geometries for face & shoulder milling
- TaeguTec indexable drill inserts (25 SKUs) — SPMG / WCMX for TopDrill & DrillMeister U-drill bodies
- KORLOY negative turning inserts (156 SKUs) — cross-brand alternative, KORLOY NC3030/PC9030 grades
- Premium Carbide Inserts (All Global Brands) — 5,880 SKUs across 8 brands including TaeguTec
- Best-selling carbide inserts — 248 top sellers across all brands
- Indexable tool holder accessories (155 products) — matched arbors, blades, and tool holder parts
Why Buy TaeguTec Negative Turning Inserts from CNCHome-Beyond
- ✅ 202 TaeguTec negative turning SKUs — full CNMG / WNMG / TNMG / DNMG / VNMG / SNMG coverage, double-sided inserts with up to 8 cutting edges per insert
- ✅ 30–50% below OEM list through direct-from-Korea supply (TaeguTec / IMC Group Korea) and Hangzhou warehouse consolidation
- ✅ 100% authentic — every product shipped with TaeguTec lot traceability documentation and original box
- ✅ ISO 9001:2015 certified supply chain for all TaeguTec products
- ✅ Free engineering support — email us a Sandvik / Mitsubishi / KORLOY insert code and we send back a matched TaeguTec equivalent with grade cross-reference and recommended cutting parameters
- ✅ Global shipping in 3–7 days via DHL / UPS / FedEx to 50+ countries, DDP available
Frequently Asked Questions
Q: What is the difference between TaeguTec CNMG and WNMG negative turning inserts?
A: Both are 80° negative-geometry inserts, but with different edge counts. CNMG is rhombic (diamond) with 4 corners on each face × 2 faces = 8 cutting edges per insert. WNMG is trigon (triangle) with 3 corners on each face × 2 faces = 6 cutting edges per insert. CNMG gives you the most cutting edges per insert (lowest cost per edge). WNMG has a stronger point geometry for heavier roughing at higher feed rates.
Q: When should I use a negative insert (CNMG / WNMG / TNMG) instead of a positive insert (CCMT / DCMT / VBMT / TCMT)?
A: Use a negative insert when you need high feed rates, heavy roughing, interrupted cuts, and a high-rigidity machine tool. Use a positive insert for low cutting force, thin-walled parts, finishing, and low-rigidity setups. Negative inserts are double-sided (2x the cutting edges per insert) and have stronger edge geometry. Positive inserts are single-sided with lower force but less edge count.
Q: What TaeguTec grade should I use for stainless steel turning?
A: Use TT9030 (PVD TiAlN) for stainless steel turning. TT9030 is TaeguTec's premium stainless grade, equivalent to Sandvik GC2040 and Mitsubishi US7020. For general carbon steel, use TT8020 (PVD TiN). For cast iron turning, TaeguTec offers TT6080 and TT7400 grades (not in this collection — see the TaeguTec master catalog).
Q: Are TaeguTec negative inserts interchangeable with Sandvik or Mitsubishi?
A: Yes — CNMG, WNMG, TNMG, and DNMG are ISO 1832 standard geometries, so TaeguTec inserts are dimensionally interchangeable with Sandvik, Mitsubishi, Iscar, and KORLOY equivalents. The insert pocket geometry, IC size, and clearance angle are identical across brands. You can switch brands without changing the tool holder.
Talk to a Tooling Engineer
Not sure which TaeguTec negative insert fits your application? Need a cross-reference to a Sandvik, Mitsubishi, or KORLOY insert code? We respond within one business day with stock availability, pricing, and engineering recommendations.
- Email: chao@cnchome-beyond.com
- WhatsApp: +86 159-9066-3752
- Browse TaeguTec brand page · TaeguTec master catalog