SNMG120408MS PR1125 (10pcs)
SNMG120408MQ CA6515 (10pcs)
SNMG120408HQ TN6020 (10pcs)
SNMG120408HQ TN60 (10pcs)
SNMG120408HQ CA5525 (10pcs)
SNMG120408-MQ CA6525 (10pcs)
SNMG120408 CA6525 (10pcs)
SNMG120404MS PR1535 (10pcs)
SNMG120404MS PR1125 (10pcs)
SNMG120404HQ TN60 (10pcs)
SNMG120404HQ CA5525 (10pcs)
SNMG120412KH CA315 (10pcs)
SNMG120412HQ CA5525 (10pcs)
SNMG120412 CA5525 (10pcs)
Kyocera SN 90° Square Negative Inserts — SNMG, SNMM, SNMA Heavy Steel
Kyocera 90° square negative inserts provide the strongest cutting-edge support of any standard turning geometry. With 4 cutting edges per insert, deep negative-rake pocket, and 90° point angle, SN inserts are the first choice for heavy steel roughing and high-feed operations.
This catalog covers 14 Kyocera SKUs across SNMG, SNMM, and SNMA geometries. Available in IC 12.7 mm (SNMG 12) and IC 19.05 mm (SNMG 19) sizes with cermet (TN60), CVD steel (PR930, PR1125, PR1535), and CVD stainless (CA5525) grades.
Browse the full Kyocera SN 90° square negative catalog, or jump to: About · Featured SKUs · All Categories · Grades · FAQ.
Kyocera-Original Inserts from Japan
All 14 inserts in this catalog are 100% genuine Kyocera — manufactured by Kyocera Corporation in Kyoto, Japan. Each insert is sourced through Kyocera's authorized distribution channels and ships in original Kyocera factory packaging with full Kyocera grade and lot traceability. Kyocera's premium carbide substrates, CVD/PVD coatings, and edge-preparation processes are specified across the full PR / TN / PV / CA / KW grade families — providing the consistent performance and reliability that has made Kyocera the leading Japanese cutting-tool brand.
About Kyocera SN 90° Square Negative Inserts
The SN 90° square negative geometry provides maximum cutting-edge strength with 4 edges per insert. The 90° point angle and negative rake make SN inserts the workhorse for heavy steel roughing at high depths of cut.
Key advantages of the SN family:
- Strongest edge strength — 90° point + negative rake for heaviest roughing
- 4 cutting edges per insert — same edge economy as CN/DN
- Heavy IC sizes — SNMG 19 (19.05 mm) for maximum DOC capability
- High-feed capable — strong edge supports aggressive parameters
The SN family includes sub-designations:
- SNMG — 90° square negative w/ hole + molded chipbreaker. The workhorse for heavy steel roughing.
- SNMM — 90° square negative w/ hole + molded chipbreaker + thicker section for extreme roughing.
- SNMA — 90° square negative w/ hole + no chipbreaker. For special-purpose applications.
Kyocera Corporation (Kyoto, Japan) is one of the world's leading manufacturers of CNC cutting tools, with over 60 years of tooling expertise. The Kyocera PR series (CVD-coated steel), TN series (cermet), PV series (PVD-coated stainless), CA series (CVD stainless / cast iron), and KW series (uncoated aluminum) represent decades of grade development.
Featured Kyocera SN Inserts
Twelve representative selections from our 14-SKU Kyocera SN 90° square negative catalog.
SNMG120408MS PR1125 (10pcs)
Standard SNMG insert for heavy steel roughing. 90° point + negative rake = strongest edge for heaviest applications.
SNMG120408MQ CA6515 (10pcs)
Standard SNMG insert for heavy steel roughing. 90° point + negative rake = strongest edge for heaviest applications.
SNMG120408HQ TN6020 (10pcs)
Standard SNMG insert for heavy steel roughing. 90° point + negative rake = strongest edge for heaviest applications.
SNMG120408HQ TN60 (10pcs)
Standard SNMG insert for heavy steel roughing. 90° point + negative rake = strongest edge for heaviest applications.
SNMG120408HQ CA5525 (10pcs)
Standard SNMG insert for heavy steel roughing. 90° point + negative rake = strongest edge for heaviest applications.
SNMG120408-MQ CA6525 (10pcs)
Standard SNMG insert for heavy steel roughing. 90° point + negative rake = strongest edge for heaviest applications.
SNMG120408 CA6525 (10pcs)
Standard SNMG insert for heavy steel roughing. 90° point + negative rake = strongest edge for heaviest applications.
SNMG120404MS PR1535 (10pcs)
Standard SNMG insert for heavy steel roughing. 90° point + negative rake = strongest edge for heaviest applications.
SNMG120404MS PR1125 (10pcs)
Standard SNMG insert for heavy steel roughing. 90° point + negative rake = strongest edge for heaviest applications.
SNMG120404HQ TN60 (10pcs)
Standard SNMG insert for heavy steel roughing. 90° point + negative rake = strongest edge for heaviest applications.
SNMG120404HQ CA5525 (10pcs)
Standard SNMG insert for heavy steel roughing. 90° point + negative rake = strongest edge for heaviest applications.
SNMG120412KH CA315 (10pcs)
Standard SNMG insert for heavy steel roughing. 90° point + negative rake = strongest edge for heaviest applications.
View All 14 Kyocera SN Inserts →
All Categories — Organized by Sub-Designation & IC Size
This catalog spans 1 sub-designation with 14 total SKUs. Each sub-designation is engineered for a specific application range:
SNMG — 90° Square Negative w/ Hole + Molded Chipbreaker (14 SKUs)
Heavy-duty 90° square with 8 cutting edges for maximum economy across steel and stainless work.
- IC 12.7 mm — 14 SKUs with grades PR1125, CA6515, TN6020, TN60, CA5525, CA6525, PR1535, CA315
Kyocera Grade Family Reference
| Kyocera Grade | Type | Coating | ISO | Best For |
|---|---|---|---|---|
| CA5525 | CVD | TiCN/Al₂O₃ thick | M15-M30 | Stainless workhorse |
| PR1125 | CVD | TiCN/Al₂O₃ | P10-P25 | Steel high-speed |
| TN60 | Cermet | TiC/TiN | P05-P15 | Steel finishing |
| CA6525 | CVD | TiCN/Al₂O₃ | P15-P30 | Steel turning |
| CA6515 | CVD | TiCN/Al₂O₃ | P15-P30 | Steel turning |
| TN6020 | CVD | TiCN/Al₂O₃ | P15-P30 | Steel turning |
| PR1535 | CVD | TiCN/Al₂O₃ thick | P20-P35 | Premium steel, interrupted cuts |
| CA315 | CVD | TiCN/Al₂O₃ | P15-P30 | Steel turning |
Kyocera vs Sandvik — Grade Cross-Reference
| Application | Kyocera Grade | Sandvik Equivalent |
|---|---|---|
| Stainless workhorse | CA5525 | GC 2025 |
| Steel high-speed | PR1125 | GC 4315 |
| Steel finishing | TN60 | GC 1525 |
| Steel | CA6525 | GC 4325 |
| Steel | CA6515 | GC 4325 |
| Steel | TN6020 | GC 4325 |
How to Choose the Right Kyocera SN Insert
Selecting the correct SN insert involves three decisions:
- Material → Grade: Steel → PR930 / PR1125 / PR1535. Stainless → CA5525. Steel finishing → TN60.
- IC size → Tool holder: SNMG 12 (12.7 mm) → DSBNR/L 12. SNMG 19 (19.05 mm) → 19 mm seat.
- Operation → Chipbreaker: General → TM. Heavy → TMM / T1F. Finishing → TS / TSF.
Tip: For heavy steel roughing, start with SNMG190612-TM T9125-equivalent grade. For stainless, use CA5525 grade.
Frequently Asked Questions
Are these genuine Kyocera original inserts?
Yes — all 14 products in this catalog are 100% genuine Kyocera originals manufactured by Kyocera Corporation in Kyoto, Japan. Each insert ships in original Kyocera factory packaging with full traceability.
What is the difference between SN and other turning geometries?
SN 90° square has stronger edge than CN 80° (rhombic) but only 4 edges vs CN 4 edges. Choose SN for the absolute heaviest roughing where edge strength matters most.
What does the IC size mean in this SN family?
IC sizes: SNMG 12 = 12.7 mm, SNMG 19 = 19.05 mm. Larger IC = thicker insert = higher cutting forces and DOC.
What tool holder do I need for SN inserts?
SN 90° square negative inserts fit standard DSBNR/L, PSBNR/L, MSBNR/L external turning holders tool holders. Browse our turning tool holder catalog for compatible options.
What grade should I choose for stainless steel?
For stainless steel work, Kyocera recommends CA5525 (CVD M-grade) or PV720 (PVD grade) — both provide superior wear resistance and edge security on 304/316 stainless. Choose CA5525 for heavier roughing; choose PV720 for finishing operations.
How does SN compare to the negative-rake alternative?
SN is a negative-rake insert. Compare with positive-rake SC square: SN has stronger edge but higher cutting forces. Use SN for heavy work; use SC for finishing + thin sections.
Need Help Selecting the Right SN Insert?
Tell us your workpiece material, operation type, and cutting parameters — we'll recommend the correct Kyocera grade within 24 hours.
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Related Kyocera & Cross-Brand Catalogs
Kyocera CN 80° Diamond Negative
The 80° rhombic alternative.
Kyocera TN 60° Triangle Negative
The 60° triangle alternative.
Kyocera OEM CNC Carbide Inserts
Full Kyocera master catalog.
Tungaloy SN 90° Square Negative
The Tungaloy cross-brand equivalent.
Turning Tool Holders — DSBNR / PSBNR
External turning holders for SN square inserts.
Sample Catalogs — Kyocera Original
Sample packs and grade cross-reference PDFs.
Kyocera, SNMG, SNMM, SNMA, PR930, PR1125, PR1535, TN60, CA5525 are trademarks and grade designations of Kyocera Corporation (Kyoto, Japan). Distributed by cnchome-beyond.com — Super Industrial Trading Co., Ltd, Hangzhou, China.