Kyocera CNMG120412C CA320 TME00733 Insert - Cast Iron
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- Stock: In Stock
- Model: CA320
- Weight: 0.10kg
- Manufactured: In Japan
- Ships: Worldwide
- Item Code: TME00733
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1. Product Overview
The Kyocera CNMG120412C CA320 TME00733 is a precision-engineered CVD coated carbide indexable turning insert from the CA3 Series. Designed specifically for cast iron machining, this insert combines a specialized carbide substrate with a multi-layer TiCN + Al₂O₃ + TiN coating to deliver exceptional wear resistance, thermal stability, and fracture toughness in demanding applications.
The General Purpose chipbreaker (C) geometry ensures balanced chipbreaker geometry for general turning operations with moderate feed rates and stable chip control. With a 1.2 mm corner radius and 4.76 mm thickness, this insert is optimized for general turning, facing, continuous to light interrupted cuts.
2. ISO Designation Breakdown
| Position | Code | Meaning |
|---|---|---|
| 1st – Shape | C | 80° Rhombic (Diamond) insert form |
| 2nd – Relief | N | 0° relief angle (Negative insert) |
| 3rd – Tolerance | M | M-class tolerance (±0.13 mm IC, ±0.08 mm thickness) |
| 4th – Fixing | G | With cylindrical hole and countersink (single-sided clamping) |
| 5th – IC | 12 | Inscribed circle = 12.70 mm (1/2 inch) |
| 6th – Thickness | 04 | Thickness = 4.76 mm (3/16 inch) |
| 7th – Radius | 12 | Corner radius rε = 1.2 mm |
| 8th – Chipbreaker | C | General Purpose – Light to Medium Machining |
3. Engineering Dimensions & Geometry
| Dimension | Metric | Imperial | Tolerance |
|---|---|---|---|
| Inscribed Circle (d) | 12.70 mm | 0.500 inch | ±0.13 mm |
| Thickness (S) | 4.76 mm | 0.187 inch | ±0.08 mm |
| Corner Radius (rε) | 1.2 mm | 0.047 inch | ±0.10 mm |
| Hole Diameter (d1) | 5.16 mm | 0.203 inch | +0.08 / -0.00 mm |
| Countersink Diameter | 8.50 mm | 0.335 inch | — |
| Insert Length (l) | 15.50 mm | 0.610 inch | ±0.15 mm |
| Relief Angle (α) | 0° | 0° | — |
| Number of Cutting Edges | 8 (4 per side × 2 sides) | 8 | — |
4. Grade Details – Key Grade Characteristics
CA320 is a premium CVD coated carbide grade from Kyocera's CA3 Series, engineered specifically for cast iron machining. The rose-gold colored coating consists of:
- Micro TiCN Base Layer: Provides exceptional hardness and wear resistance through micro-crystal structure.
- Al₂O₃ Intermediate Layer: Thick alumina coating offers superior thermal barrier properties and crater wear resistance at high cutting temperatures.
- TiN Top Layer: Gold-colored surface layer improves chip flow and reduces built-up edge formation.
The specialized carbide substrate is optimized for cast iron applications, providing the ideal balance between hardness and toughness required for interrupted cuts in nodular cast iron.
| Property | Value | Significance |
|---|---|---|
| Coating Hardness | 1,570 HV | Superior abrasion resistance |
| Transverse Rupture Strength | 2,780 MPa | High fracture resistance under impact |
| Fracture Toughness | 15.4 MPa·m¹/² | Reliable performance in interrupted cuts |
| Coating Thickness | 15.0 μm | Extended tool life in continuous cuts |
| Coating Adhesion | +20% vs conventional | Prevents chipping and delamination |
5. Grade Comparison Matrix
Select the optimal CA3 Series grade for your cast iron application:
| Grade | Coating | Hardness (HV) | Primary Application | Machining Type |
|---|---|---|---|---|
| CA310 | TiCN + Al₂O₃ + TiN | 1,570 | Gray Cast Iron | Continuous to Light Interrupted |
| CA315 | TiCN + Al₂O₃ + TiN | 1,570 | Nodular Cast Iron | Continuous to Interrupted |
| CA320 | TiCN + Al₂O₃ + TiN | 1,570 | Nodular Cast Iron | Heavy Interruption / High Speed |
6. Chipbreaker Profile
General Purpose (C) – Light to Medium Machining
Balanced chipbreaker geometry for general turning operations with moderate feed rates and stable chip control.
| Parameter | Specification |
|---|---|
| Chipbreaker Type | General Purpose |
| Rake Angle | Neutral |
| Edge Preparation | Standard land with micro-hone |
| Depth of Cut Range (ap) | 0.5 – 3.0 mm |
| Feed Range (f) | 0.1 – 0.4 mm/rev |
| Typical Chip Shape | 6-shaped, well-controlled |
| Cutting Force Level | Medium |
7. Recommended Applications & Workpiece Materials
The CA320 grade with General Purpose chipbreaker is ideally suited for the following materials and operations:
| Material | ISO Code | Hardness | Suitability |
|---|---|---|---|
| Gray Cast Iron | K2x | 180–260 HB | ★★★★☆ Excellent |
| Nodular Cast Iron | K3x – K4x | 200–350 HB | ★★★★★ Optimal |
| Malleable Cast Iron | K2x – K3x | 150–230 HB | ★★★★☆ Very Good |
| Compacted Graphite Iron (CGI) | K3x | 200–280 HB | ★★★★☆ Very Good |
| Austempered Ductile Iron (ADI) | K4x – K5x | 280–400 HB | ★★★☆☆ Good (reduce speed) |
8. Application Map by Operation
| Operation | Suitability | Recommended ap | Recommended f |
|---|---|---|---|
| External Longitudinal Turning | ✓ Primary | 3.0 mm max | 0.4 mm/rev max |
| Facing | ✓ Primary | 3.0 mm max | 0.4 mm/rev max |
| Chamfering | ✓ Secondary | ≤ 2.0 mm | ≤ 0.3 mm/rev |
| Profiling / Copying | ○ Conditional | ≤ 1.5 mm | ≤ 0.2 mm/rev |
| Internal Boring | ○ Conditional | ≤ 2.0 mm | ≤ 0.25 mm/rev |
| Heavy Roughing | ○ Conditional | ≤ 2.0 mm | ≤ 0.3 mm/rev |
9. Recommended Cutting Conditions
Values below are starting recommendations. Adjust based on machine rigidity, workpiece condition, and desired tool life.
| Workpiece Material | Cutting Speed Vc (m/min) | Feed f (mm/rev) | Depth of Cut ap (mm) | Coolant |
|---|---|---|---|---|
| Gray Cast Iron (FC200) | 180-250 | 0.10 – 0.4 | 0.5 – 3.0 | Wet / Dry |
| Nodular Cast Iron (FCD500) | 120-180 | 0.10 – 0.4 | 0.5 – 3.0 | Wet / Dry |
| Malleable Cast Iron | 150-200 | 0.10 – 0.4 | 0.5 – 3.0 | Wet / Dry |
| Interrupted Cut (FCD700) | 100-150 | 0.15 – 0.4 | 1.0 – 3.0 | Wet (high pressure) |
Note: For scale-covered or sand-cast surfaces, reduce Vc by 20–30%. For stable continuous cuts, increase Vc by 15–20%.
10. Operating Guidelines
- Toolholder Selection: Use 80° diamond toolholders with IC 12.7 mm pocket. Ensure pocket cleanliness and proper insert seating.
- Cutting Speed (Vc): Start at the lower end of the recommended range and increase based on tool life and surface finish requirements.
- Feed Rate (f): For roughing, use higher feeds with PH/KH chipbreakers. For finishing, reduce feed with WQ/ZS geometries.
- Depth of Cut (ap): Maintain ap ≥ 2× corner radius for optimal edge engagement and chip control.
- Coolant: Wet cutting is recommended for cast iron to control dust and improve surface finish. Minimum Quantity Lubrication (MQL) acceptable for finishing.
- Insert Change: Monitor flank wear (VB). Replace when VB = 0.3 mm for roughing or 0.15 mm for finishing.
- Security: Ensure proper clamping torque on toolholder screw (recommended 3.5–4.5 N·m).
11. Toolholder Compatibility
The CNMG120412C is an 80° rhombic negative insert with 12.70 mm IC. Compatible toolholders include:
| Toolholder Designation | Application | Insert Angle | Shank Size |
|---|---|---|---|
| MCLNR/L-123 | External Turning | 80° Diamond | 12×12 mm |
| MCMNN-123 | External Turning | 80° Diamond | 12×12 mm |
| PCLNR/L-123 | External Turning | 80° Diamond | 16×16 mm |
| DCLNR/L-123 | External Turning | 80° Diamond | 20×20 mm |
| SCLCR/L-09 | Internal Boring | 80° Diamond | Ø20 mm Bar |
| CCLNR/L-123 | External Turning | 80° Diamond | 25×25 mm |
Clamp Type: Lever lock or screw clamp with 80° diamond pocket. Use Kyocera OEM screws (TS-35 or equivalent) for secure seating.
12. Packaging & Ordering Information
| Parameter | Specification |
|---|---|
| Packaging Type | Individual plastic insert box (10 inserts per box) |
| Labeling | Kyocera OEM label with batch code, grade, and geometry |
| Storage | Dry environment, temperature 15–25°C, avoid direct sunlight |
| Minimum Order | 1 box (10 inserts) |
| Bulk Orders | Volume discounts available for 50+ boxes |
13. Catalog Meta Data
| Meta Field | Value |
|---|---|
| ISO Designation | CNMG 120412-C |
| ANSI Equivalent | CNMG 120412-C |
| Kyocera MPN | TME00733 |
| Grade | CA320 (CA3 Series) |
| Coating | CVD – TiCN + Al₂O₃ + TiN |
| Insert Color | Rose Gold |
| Substrate | Specialized carbide for cast iron |
| Shape Class | 80° Rhombic (Diamond), Negative, With Hole |
| Tolerance | M-class (±0.13 mm IC, ±0.08 mm thickness) |
| Hole Diameter | 5.16 mm |
| Inscribed Circle (IC) | 12.70 mm (1/2 inch) |
| Thickness (S) | 4.76 mm (3/16 inch) |
| Corner Radius (rε) | 1.2 mm |
Why Buy from Kyotow.com?
• Genuine OEM Kyocera industrial cutting tools with full manufacturer warranty
• Expert CNC tooling application support and technical assistance
• Fast worldwide shipping with tracked delivery
• Bulk and institutional orders welcome with volume pricing
• Dedicated customer service for machining optimization queries
✓ Genuine Kyocera Product
| Manufacturer | Kyocera Corporation |
|---|---|
| Status | Verified Original Product |
| Quality Assurance | Guaranteed Genuine Kyocera Components |
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Following the Japanese philosophy of Monozukuri (物の作り), we strive to maintain exceptional technical accuracy throughout our product catalog.
- Confirm dimensions, geometry, coating, and grade using the official Kyocera item code.
- Technical datasheets are available upon request.
- For technical clarification contact sales.kyotow@gmail.com.
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Full refund or replacement will be provided if the verified Kyocera item received differs from the official item code specified in your order confirmation. -
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Due to automated procurement systems connected directly to global factory distribution channels, orders cannot be modified or cancelled once processing has commenced. -
Technical Assistance:
Please verify machine compatibility, insert geometry, coating, and application grade before placing your order.
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Need Technical Assistance?
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Why are our prices so low? (価格が安い理由): Kyotow sources genuine Kyocera tools directly from domestic Japanese distribution networks, completely bypassing the steep regional markups, localized sales overhead, and heavy middleman margins of Western distributors. We pass 100% of those structural savings directly to your machine shop.
Kyotowは日本の国内流通ネットワークから京セラ正規品を直接仕入れることで、欧米の現地代理店による大幅な上乗せ価格や営業コスト、中間マージンを完全に排除しています。その構造的メリットを、お客様の加工現場へ100%還元いたします。
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