Kyocera CNMG120404PS CA525 TAC00900 CNC Insert - Steel Finishing
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- Stock: In Stock
- Model: CA525
- Weight: 0.10kg
- Manufactured: In Japan
- Ships: Worldwide
- Item Code: TAC00900
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1. Product Overview
The CNMG120404PS CA525 TAC00900 is a premium-grade indexable carbide turning insert manufactured by Kyocera Corporation in Japan. Designed for precision CNC turning operations, this insert combines an ultra-fine grain carbide substrate with a multi-layer CVD coating to deliver exceptional wear resistance, thermal stability, and cutting performance across a wide range of steel machining applications.
With its 80° Rhombic (Diamond) geometry and PS chipbreaker profile, the CNMG120404PS is optimized for finishing, semi-finishing of steel and stainless steel, providing consistent chip control, reduced cutting forces, and superior surface finish quality. Whether deployed in high-volume production or precision prototyping environments, this insert ensures reliable performance and extended tool life.
2. ISO Designation Breakdown
The CNMG120404PS follows the ISO 1832 standard for indexable inserts. Each letter and number in the designation conveys critical geometric and functional information:
| Position | Code | Meaning |
|---|---|---|
| 1st Letter | C | 80° Rhombic (Diamond) |
| 2nd Letter | N | 0° Clearance |
| 3rd Letter | M | ±0.05mm Dimensional Tolerance |
| 4th Letter | G | With Hole + Chip Breaker |
| 1st Numbers | 12.7 | Inscribed Circle Diameter: 12.7mm (1/2") |
| 2nd Numbers | 4.76 | Nominal Thickness: 4.76mm (3/16") |
| 3rd Numbers | 0.4 | Corner Radius: 0.4mm |
| Suffix | PS | Chipbreaker Style: Positive rake, sharp cutting edge for light finishing |
3. Engineering Dimensions & Geometry
| Parameter | Value | Tolerance |
|---|---|---|
| Inscribed Circle Diameter (IC) | 12.7mm (1/2") | ±0.05mm |
| Insert Thickness (S) | 4.76mm (3/16") | ±0.05mm |
| Corner Radius (r) | 0.4mm | ±0.05mm |
| Inscribed Circle Diameter (d) | 12.7mm (1/2") | ±0.08mm |
| Hole Diameter | 5.16mm (for 12mm IC) / 6.35mm (for 16mm IC) | +0.1mm |
| Counter Sink Diameter | 9.5mm (for 12mm IC) / 11.0mm (for 16mm IC) | +0.2mm |
| Clearance Angle | 0° (Negative Insert) | ±0.5° |
4. Grade Details – Key Grade Characteristics
The CA525 grade is a high-performance CVD-coated carbide grade specifically engineered for steel machining applications. Below are the detailed characteristics:
| Characteristic | Specification |
|---|---|
| Substrate Material | Ultra-fine grain tungsten carbide (WC-Co) with high cobalt content |
| Coating System | CVD Multi-layer (TiN/TiCN/Al2O3) - Gold colored top layer |
| Hardness | HRA 91.5 |
| Transverse Rupture Strength | ≥ 3,200 MPa |
| Thermal Stability | Up to 1,000°C cutting temperature |
| Wear Resistance | Excellent crater and flank wear resistance |
| Fracture Resistance | High toughness for interrupted cutting |
| Insert Color | Gold/Yellow (TiN top layer) |
| ISO Application Class | P25-P35 (Steel machining) |
| Primary Application Range | Medium to roughing of carbon steel, alloy steel, and cast steel |
5. Grade Comparison Matrix
Compare CA525 with adjacent grades in the Kyocera portfolio to select the optimal grade for your application:
| Grade | Coating | ISO Range | Speed | Wear Resistance | Toughness |
|---|---|---|---|---|---|
| CA525 | CVD TiN/TiCN/Al₂O₃ | P25-P35 | Medium-High | ★★★★☆ | ★★★★★ |
| CA510 | CVD TiN/TiCN/Al₂O₃ | P15-P25 | High | ★★★★★ | ★★★☆☆ |
| CA530 | CVD TiN/TiCN/Al₂O₃ | P35-P45 | Medium | ★★★☆☆ | ★★★★★ |
6. Chipbreaker Profile
The PS chipbreaker on the CNMG120404PS is engineered with the following characteristics:
- Profile Design: Positive rake, sharp cutting edge for light finishing
- Geometric Features: Low cutting forces, excellent surface finish
- Primary Applications: Finishing, semi-finishing of steel and stainless steel
- Chip Control: Excellent chip curling and breaking across recommended feed rates
- Edge Preparation: Precision-honed edge for optimal balance between sharpness and strength
7. Recommended Applications & Workpiece Materials
The CNMG120404PS CA525 is ideally suited for the following workpiece materials:
Carbon Steel (≤ 0.6% C), Alloy Steel (≤ 40 HRC), Stainless Steel (304, 316), Free-Cutting Steel
| Material | Machinability Rating | Recommended Operation |
|---|---|---|
| Carbon Steel (C35, C45, C60) | ★★★★★ Excellent | Roughing, Semi-Finishing, Finishing |
| Alloy Steel (4140, 4340, 8620) | ★★★★☆ Very Good | Semi-Finishing, Medium Roughing |
| Cast Steel (GS-52, GS-60) | ★★★★☆ Very Good | Roughing, General Turning |
| Stainless Steel (304, 316) | ★★★☆☆ Good | Semi-Finishing, Finishing |
| Tool Steel (H13, D2, O1) | ★★★☆☆ Good | Light Roughing, Semi-Finishing |
8. Application Map by Operation
Performance suitability matrix for the CNMG120404PS PS across common turning operations:
| Operation Type | Suitability | Recommended Depth of Cut (ap) | Recommended Feed (fn) |
|---|---|---|---|
| Roughing | Limited | 1.5-4.0 mm | 0.15-0.35 mm/rev |
| Semi-Finishing | Good | 1.0-3.0 mm | 0.15-0.30 mm/rev |
| Finishing | Excellent | 0.3-1.5 mm | 0.05-0.15 mm/rev |
| Continuous Cutting | Excellent | Variable | Variable |
| Interrupted Cutting | Fair | Reduce by 30% | Reduce by 20% |
9. Recommended Cutting Conditions
Optimized cutting parameters for the CNMG120404PS CA525 when machining carbon and alloy steels:
| Operation | Cutting Speed Vc (m/min) | Feed Rate fn (mm/rev) | Depth of Cut ap (mm) |
|---|---|---|---|
| Roughing | 180-250 | 0.15-0.35 | 1.5-4.0 |
| Finishing | 250-350 | 0.05-0.15 | 0.3-1.5 |
Note: Values are guidelines for stable conditions with adequate coolant supply. Reduce speeds by 15-20% for alloy steels and 25-30% for stainless steels. Always perform test cuts to optimize for your specific machine and setup.
10. Operating Guidelines
- Coolant Recommendation: High-pressure water-soluble coolant (5-8% concentration) or neat cutting oil for finishing operations
- Entry Strategy: Use ramp entry or arc entry to avoid impact loading on the insert edge
- Tool Overhang: Minimize tool overhang to ≤ 1.5x holder height to reduce vibration and improve stability
- Insert Seating: Ensure clean insert pocket and proper seating torque (3.5-4.5 N·m for M3.5 screws)
- Chip Management: Verify chip flow direction; use chip deflectors if necessary to protect the workpiece surface
- Speed Ramp-Up: Start at 70% of recommended Vc and increase gradually while monitoring tool wear and surface finish
- Tool Life Check: Monitor flank wear (VB). Replace insert when VB reaches 0.3mm for roughing or 0.15mm for finishing
- Storage: Store inserts in original packaging away from direct moisture and temperature extremes
11. Toolholder Compatibility
The CNMG120404PS is a negative-style insert (0° clearance) with a central hole, requiring compatible negative toolholders with a 95° approach angle. Recommended holder configurations:
| Holder Type | Compatible Models | Shank Size |
|---|---|---|
| External Turning | MCLNR/L (95° approach angle, 12mm IC) | 20x20mm, 25x25mm |
| Specific Models | MCLNR2020K12, MCLNL2020K12, MCLNR2525M12, MCLNL2525M12 | Standard DIN 4980 |
| Clamp Style | Lever lock (L) or Top clamp (T) | — |
Ensure holder pocket is clean and undamaged before insert installation. Use genuine Kyocera toolholders for optimal performance and safety.
12. Packaging & Ordering Information
| Attribute | Details |
|---|---|
| Manufacturer Part Number | TAC00900 |
| Quantity per Package | 10 inserts per pack |
| Packaging Type | Anti-static plastic blister with foam insert |
| Label Information | Model code, grade, batch number, barcode, ISO certification mark |
| Minimum Order | 1 pack (10 pieces) |
| Bulk Availability | Volume discounts available for 50+ packs |
13. Catalog Meta Data
| Field | Value |
|---|---|
| Product Series | CA500 Series |
| Coating Code | CVD-Gold |
| Insert Classification | Negative Insert with Hole |
| Dimensional Standard | ISO 1832 |
| Catalog Revision | Rev. 2026.00 |
| Country of Manufacture | Japan |
| Warranty | Standard manufacturer warranty against defects |
Why Buy from Kyotow.com?
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| Manufacturer | Kyocera Corporation |
|---|---|
| Status | Verified Original Product |
| Quality Assurance | Guaranteed Genuine Kyocera Components |
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- Confirm dimensions, geometry, coating, and grade using the official Kyocera item code.
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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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