Kyocera VNMG160404R-VC CA525 TAC07663 Medium to Rough Turning - Steel
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- Stock: In Stock
- Model: CA525
- Weight: 0.10kg
- Manufactured: In Japan
- Ships: Worldwide
- Item Code: TAC07663
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Product Overview
The VNMG160404R-VC CA525 TAC07663 is a premium-grade indexable carbide turning insert manufactured by Kyocera in Japan. Designed for Medium to Rough Turning, this 35° rhombic insert combines a robust 15.875 mm substrate with the advanced CA525 PVD coating to deliver exceptional tool life, dimensional stability, and surface finish quality across a wide spectrum of steel machining applications.
With a precisely ground 0.4 mm nose radius and positive rake geometry, the VC chipbreaker ensures efficient chip evacuation, reduced cutting forces, and minimal built-up edge formation. Whether deployed in high-volume production environments or precision prototyping workshops, this insert offers the reliability and consistency that CNC machinists demand.
ISO Designation Breakdown
The ISO 1832 standard designation for this insert is decoded as follows:
| Position | Code | Parameter | Specification |
|---|---|---|---|
| 1 | V | Insert Shape | 35° Rhombic |
| 2 | N | Clearance Angle | 0° (Negative Insert) |
| 3 | M | Tolerance Class | M-Class (±0.05mm IC, ±0.08mm Thickness) |
| 4 | G | Hole / Chipbreaker | G Type with Central Hole |
| 5-6 | 16 | Inscribed Circle (IC) | 15.875 mm |
| 7-8 | 04 | Insert Thickness (S) | 4.76 mm |
| 9-10 | 04 | Nose Radius (RE) | 0.4 mm |
| 11+ | VC | Chipbreaker Design | Versatile Chipbreaker |
Engineering Dimensions & Geometry
All dimensions conform to ISO 1832:2017 tolerances for M-class inserts:
| Dimension | Value | Tolerance | Notes |
|---|---|---|---|
| Inscribed Circle Diameter (IC) | 15.875 mm | ±0.05 mm | Per ISO 1832 |
| Insert Thickness (S) | 4.76 mm | ±0.08 mm | M-Class Tolerance |
| Nose Radius (RE) | 0.4 mm | ±0.05 mm | Corner Radius for Surface Finish |
| Clearance Angle | 0° | — | Negative Insert, Requires Negative Toolholder |
| Included Angle | 35° | — | 35° Rhombic |
| Center Hole Diameter | Standard | — | Compatible with Standard Clamping Systems |
Grade Details — Key Grade Characteristics
CA525 is a premium PVD-coated carbide grade engineered specifically for steel machining applications. The grade combines a high-performance TiAlN-based multilayer coating with a tough submicron carbide substrate to deliver exceptional wear resistance and edge stability.
| Property | Specification |
|---|---|
| Coating Type | PVD (Physical Vapor Deposition) TiAlN Multilayer |
| Substrate | Submicron Tungsten Carbide (WC-Co) |
| ISO Application Range | P15 – P35 (Steel Machining) |
| Hardness (HV) | 1,650 HV |
| Transverse Rupture Strength | 3,200 MPa |
| Thermal Stability | Up to 900°C Oxidation Resistance |
| Coating Color | Bronze-Gold |
| Recommended Cutting Speed (Vc) | 150 – 350 m/min (Steel) |
Grade Comparison Matrix
Select the optimal grade for your specific machining environment:
| Grade | Coating | ISO Range | Best For | Speed |
|---|---|---|---|---|
| CA525 | PVD TiAlN | P15 – P35 | General Steel, Continuous to Light Interrupted | Medium-High |
| CA530 | PVD TiAlN | P20 – P40 | Heavier Interrupted Cuts, Tougher Conditions | Medium |
| CA515 | PVD TiAlN | P10 – P25 | High-Speed Finishing, Stable Conditions | High |
| CA310 | CVD TiC-TiN-Al₂O₃ | P30 – P50 | Roughing, Heavy Interruption, Low Speeds | Low-Medium |
Chipbreaker Profile
The VC chipbreaker geometry is optimized for medium to rough turning. It features a precisely engineered rake face and chip groove design that promotes effective chip curling and controlled breakage, preventing chip entanglement and ensuring smooth machining operations.
| Parameter | VC Specification |
|---|---|
| Rake Angle | Positive |
| Chip Groove Width | Optimized for Medium to Rough Turning |
| Edge Preparation | Good Quality Edge Honing |
| Primary Application | Medium to Rough Turning |
| Surface Finish Capability | Good |
Recommended Applications & Workpiece Materials
The following cutting parameters serve as starting recommendations. Adjust based on machine rigidity, workpiece condition, and desired surface finish:
| Workpiece Material | Condition | Cutting Speed (m/min) | Feed (mm/rev) | Depth of Cut (mm) |
|---|---|---|---|---|
| Carbon Steel (C45, C50) | Normalized | 220 – 280 | 0.15 – 0.40 | 0.5 – 4.0 |
| Alloy Steel (4140, 4340) | Quenched & Tempered | 180 – 250 | 0.12 – 0.35 | 0.5 – 3.5 |
| Stainless Steel (304, 316) | Annealed | 120 – 180 | 0.10 – 0.30 | 0.3 – 3.0 |
| Tool Steel (H13, D2) | Pre-Hardened | 100 – 150 | 0.08 – 0.25 | 0.3 – 2.5 |
| Cast Iron (GG25, GGG40) | As-Cast | 150 – 200 | 0.12 – 0.30 | 0.5 – 3.0 |
Application Map by Operation
Operational suitability matrix for the VNMG160404R-VC insert:
| Operation | Suitability | Recommended Depth (mm) | Expected Finish |
|---|---|---|---|
| External Turning | ★★★★★ Excellent | 0.5 – 4.0 | Ra 0.8 – 3.2 μm |
| Internal Turning (Boring) | ★★★★☆ Very Good | 0.3 – 2.5 | Ra 0.8 – 3.2 μm |
| Facing | ★★★★★ Excellent | 0.5 – 3.0 | Ra 0.8 – 3.2 μm |
| Profiling / Contouring | ★★★★☆ Very Good | 0.3 – 2.0 | Ra 0.4 – 1.6 μm |
| Grooving / Parting | ★★☆☆☆ Limited | — | Not Recommended |
| Threading | ★☆☆☆☆ Not Suitable | — | Use Dedicated Threading Inserts |
Recommended Cutting Conditions
Optimized starting parameters for VC chipbreaker geometry:
| Material | Vc (m/min) | fn (mm/rev) | ap (mm) | Coolant |
|---|---|---|---|---|
| Low-Carbon Steel | 200 – 280 | 0.15 – 0.40 | 1.0 – 5.0 | Wet / Dry |
| Medium-Carbon Steel | 180 – 250 | 0.12 – 0.35 | 1.0 – 4.5 | Wet Recommended |
| Alloy Steel | 150 – 220 | 0.12 – 0.30 | 0.8 – 3.5 | Wet Recommended |
| Cast Iron | 130 – 190 | 0.15 – 0.35 | 1.0 – 4.0 | Dry / Air Blast |
Operating Guidelines
- Toolholder Selection: Use negative-rake toolholders with matching insert shape (e.g., MVJNR for VNMG, MWLNR for WNMG/WBMT). Ensure proper seat contact and clamping force.
- Insert Mounting: Clean the toolholder pocket and insert seat thoroughly before mounting. Torque the clamping screw to manufacturer specifications (typically 3.5 – 5.0 N·m).
- Cutting Edge Inspection: Visually inspect the cutting edge before each use. Do not use inserts with visible chipping, cracks, or excessive flank wear (>0.3 mm).
- Coolant Application: For steel machining, flood coolant is recommended at 8–12% concentration. Ensure coolant reaches the cutting zone directly.
- Speed & Feed Ramp-Up: Start at the lower end of recommended cutting parameters and gradually increase to optimal levels based on chip formation and surface finish.
- Chip Control: Monitor chip color and shape. Silver-blue chips indicate optimal temperature; dark blue or purple chips suggest excessive heat—reduce speed or increase feed.
- Workpiece Rigidity: Ensure adequate workpiece support, especially for internal turning and long overhangs. Minimize vibration to prevent edge chipping.
- Storage: Store inserts in original packaging away from direct sunlight and moisture. Avoid contact between inserts to prevent edge damage.
Toolholder Compatibility
Compatible toolholder series for the VNMG160404R-VC insert:
| Toolholder Series | Style | Approach Angle | Application |
|---|---|---|---|
| MVJNR / MVJNL | External Turning | 93° | General External Turning, Facing |
| SVJBR / SVJBL | External Turning | 93° | Profiling, Copy Turning |
| DVJNR / DVJNL | External Turning | 93° | Heavy-Duty External Turning |
| S16Q-MVJNR16 | Internal Boring | 93° | Boring Bars for Internal Turning |
Packaging & Ordering Information
| Parameter | Details |
|---|---|
| Standard Pack Quantity | 10 Inserts per Box |
| Packaging Type | Kyocera Original Plastic Box with Foam Insert |
| Label Information | ISO Code, Grade, MPN, Batch Number, Manufacturing Date |
| Minimum Order Quantity | 1 Box (10 Inserts) |
| Bulk Pricing | Available for quantities ≥50 boxes. Contact sales for quotation. |
| Warranty | Full Manufacturer Warranty Against Material and Manufacturing Defects |
| MPN (Manufacturer Part Number) | TAC07663 |
| Country of Manufacture | Japan |
Catalog Meta Data
| Attribute | Value |
|---|---|
| Product Line | Kyocera Precision Tools — Turning Inserts |
| Series | CA525 PVD-Coated Steel Grade |
| Insert Family | 35° Rhombic Negative Insert |
| Chipbreaker Family | VC — Versatile Chipbreaker |
| ISO Standard | ISO 1832:2017 |
| Industry Applications | Automotive, Aerospace, General Engineering, Energy, Medical Devices |
| Compatible Machines | CNC Lathes, Turning Centers, Multi-Tasking Machines, Swiss-Type Lathes |
| Replacement For | Compatible with all ISO-standard 35° Rhombic toolholders |
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