Kyocera RNMG120400 CA525 TAC04431 - Heavy Roughing & Contouring
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- Stock: In Stock
- Model: DRILL
- Weight: 0.10kg
- Manufactured: In Japan
- Ships: Worldwide
- Item Code: CDR00114
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Product Overview
The RNMG120400 is a precision-engineered indexable carbide insert manufactured by Kyocera in Japan. Featuring the advanced CA525 CVD-coated grade and a Round Negative Insert geometry, this insert is optimized for Heavy Roughing & Contouring operations in steel and related materials.
With 4 usable cutting edges, the RNMG120400 delivers exceptional cost-per-edge economy while maintaining consistent dimensional accuracy and surface finish quality across high-volume production runs. The Standard chipbreaker geometry ensures reliable chip formation and evacuation, reducing downtime and improving process safety.
ISO Designation Breakdown
The RNMG120400 designation follows ISO 1832 standards for indexable inserts. Each position conveys critical geometric and functional information:
| Position | Code | Meaning | Description |
|---|---|---|---|
| 1st Letter | R | Insert Shape | Round Negative Insert |
| 2nd Letter | N | Clearance Angle | N (0° relief) |
| 3rd Letter | M | Tolerance Class | M-class |
| 4th Letter | G | Fixing / Chipbreaker | G (Central hole + counterbore) |
| Size | 12.70 mm | Inscribed Circle (IC) | Nominal diameter of inscribed circle |
| Thickness | 4.76 mm | Insert Thickness (S) | Overall thickness of the insert |
| Radius | 0.0 mm | Corner Radius (rε) | Nose radius for edge strength & finish |
| Suffix | Standard | Chipbreaker Style | General-purpose geometry optimized for reliable chip formation and evacuation |
Engineering Dimensions & Geometry
All dimensions conform to ISO 1832 tolerance classes. Measurements are taken at 20°C ±1°C.
| Parameter | Value | Unit | Tolerance |
|---|---|---|---|
| Inscribed Circle (IC) | 12.70 | mm | ±0.05 |
| Insert Thickness (S) | 4.76 | mm | ±0.05 |
| Corner Radius (rε) | 0.0 | mm | ±0.05 |
| Hole Diameter (d1) | 5.16 | mm | +0.08 / 0 |
| Relief Angle (α) | 0 | degrees | ±1° |
| Rake Angle (γ) | -5 to -8 | degrees | — |
| Cutting Edges | 4 | edges | — |
| Insert Weight (approx.) | 1.5 | g | — |
Grade Details — Key Grade Characteristics
The CA525 grade belongs to Kyocera's CA5-series CVD-coated carbide family, specifically engineered for steel machining applications. It represents the general-purpose benchmark within the series, offering an optimal balance between wear resistance and fracture toughness.
| Characteristic | CA525 Specification | Benefit |
|---|---|---|
| Coating Technology | CVD MEGACOAT TOUGH™ | 40% improved adhesion vs. conventional CVD |
| Coating Layers | TiN + Bonding + TiCN + α-Al₂O₃ | Superior wear resistance & thermal stability |
| Substrate | Special carbide with high-temp deformation resistance | 10% improved hardness at elevated temperatures |
| Surface Finish | Smooth & flat post-coating surface | Reduces cutting forces; prevents material welding |
| Color Code | Gold / Bronze (TiN top layer) | Easy visual identification in tool magazine |
| ISO Application Group | P15–P25 (Steel) | General-purpose steel machining grade |
Grade Comparison Matrix
Understand where CA525 sits within the Kyocera CA5-series portfolio to select the optimal grade for your specific application:
| Grade | Coating | Orientation | Best For | ISO Range |
|---|---|---|---|---|
| CA510 | CVD (MEGACOAT) | Wear Resistance | High-speed continuous cutting | P05–P15 |
| CA515 | CVD (MEGACOAT) | Balanced | Continuous to light interrupted | P10–P20 |
| CA525 | CVD (MEGACOAT TOUGH) | General Purpose | General steel machining | P15–P25 |
| CA530 | CVD (MEGACOAT TOUGH) | Toughness | Heavy interrupted / high feed | P25–P35 |
Chipbreaker Profile
Standard Chipbreaker: General-purpose geometry optimized for reliable chip formation and evacuation
The chipbreaker geometry has been optimized through finite element analysis (FEA) and extensive cutting trials to provide:
- Controlled chip curling and breaking across the recommended feed range
- Reduced cutting forces through smooth land transitions
- Enhanced heat dissipation via optimized rake surface topography
- Protection against built-up edge (BUE) formation in sticky materials
- Consistent chip flow direction for safer automated machining environments
Recommended Applications & Workpiece Materials
The RNMG120400 with CA525 is primarily recommended for the following material groups and industrial sectors:
| Material Group | Examples | Machinability | Recommended Use |
|---|---|---|---|
| Low-Carbon Steel | C15, C22, S235JR, 1015, 1020 | ★★★★★ Excellent | High-speed finishing & medium cutting |
| Medium-Carbon Steel | C45, C55, 1045, 1055, 42CrMo4 | ★★★★☆ Very Good | General turning & facing operations |
| High-Carbon Steel | C60, C70, 1060, 1095, 50CrV4 | ★★★★☆ Very Good | Medium cutting with stable parameters |
| Alloy Steel | 34CrMo4, 20CrMo5, 17Cr3, 16MnCr5 | ★★★★☆ Very Good | Automotive & machinery components |
| Stainless Steel (Martensitic) | X6Cr13, X20Cr13, 410, 420 | ★★★☆☆ Good | Reduce Vc by 20–30%; wet cutting |
| Stainless Steel (Austenitic) | AISI 304, 316, 321 | ★★★☆☆ Good | Wet cutting mandatory; sharp edges |
| Cast Iron (Gray) | GG25, GG30, GJL-250, GJL-300 | ★★★☆☆ Good | Dry cutting acceptable; moderate speeds |
Application Map by Operation
Suitability ratings for common turning operations using the RNMG120400 insert:
| Operation | Suitability | Depth of Cut (ap) | Feed (f) | Notes |
|---|---|---|---|---|
| External Turning | ★★★★★ Excellent | 1.0–6.0 mm | 0.15–0.55 mm/rev | Primary application |
| Internal Turning / Boring | ★★★★☆ Very Good | 1.0–6.0 mm | 0.15–0.55 mm/rev | Use appropriate toolholder |
| Facing | ★★★★★ Excellent | 1.0–6.0 mm | 0.15–0.55 mm/rev | Stable chip control |
| Profiling / Contouring | ★★★★☆ Very Good | Light to medium | 0.10–0.30 mm/rev | Radius-dependent finish |
| Cut-off / Grooving | ★★☆☆☆ Limited | N/A | N/A | Not recommended |
Recommended Cutting Conditions
Starting parameters for the RNMG120400 CA525. 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) | Condition |
|---|---|---|---|---|
| Low-Carbon Steel (C<0.25%) | 180–350 | 0.10–0.35 | 0.5–3.0 | Wet / Dry |
| Medium-Carbon Steel (0.25–0.60%) | 150–300 | 0.15–0.40 | 0.5–4.0 | Wet / Dry |
| High-Carbon Steel (>0.60%) | 120–250 | 0.15–0.35 | 1.0–4.0 | Wet recommended |
| Alloy Steel (42CrMo4, 20CrMo5) | 120–280 | 0.15–0.40 | 1.0–4.0 | Wet recommended |
| Stainless Steel (AISI 304/316) | 100–180 | 0.12–0.30 | 0.5–3.0 | Wet mandatory |
| Cast Iron (GG25/GG30) | 100–200 | 0.15–0.40 | 1.0–5.0 | Dry / Wet |
Note: Values are starting recommendations. For interrupted cuts or scale-covered workpieces, reduce Vc by 15–25% and increase feed slightly for edge stability.
Operating Guidelines
- Coolant: Use water-soluble coolant at 6–8% concentration for steel machining. For cast iron, dry cutting is acceptable. Always ensure adequate chip flushing.
- Entry Strategy: Avoid direct plunge into workpiece. Use ramp entry or reduce feed by 50% for the first 2 revolutions.
- Tool Overhang: Keep toolholder overhang to minimum (≤4× toolholder width) to prevent vibration and chatter.
- Edge Preparation: Do not re-sharpen or re-coat inserts. CA525 is a single-use precision insert designed for indexable replacement.
- Chip Control: If chips are too long or tangled, increase feed rate by 10–15% or verify coolant nozzle alignment (aim at cutting zone).
- Insert Indexing: Always clean seat pocket before indexing. Torque clamping screw to manufacturer specification (typically 3.5–5.0 N·m).
- Storage: Store in original packaging away from moisture and corrosive environments. Avoid contact between inserts to prevent edge chipping.
- Speed Ramp: When starting a new batch, begin at lower Vc (80% of recommended) and ramp up to optimal based on tool life and surface finish.
Toolholder Compatibility
The RNMG120400 is designed for use with the following toolholder families:
- Recommended: RN.. series round toolholders (negative rake), SR.. series for heavy roughing
- Clamping: Lever-lock or screw-clamp systems with appropriate chipbreaker clearance
- Seat Angle: Match toolholder seat angle to insert clearance angle (0°)
- Insert Seat: Ensure pocket is clean, undamaged, and free of burrs before mounting
- Coolant Delivery: Use toolholders with through-coolant capability for best chip control and tool life
Packaging & Ordering Information
| Item | Details |
|---|---|
| Pack Quantity | 10 pieces per pack |
| Packaging Type | Plastic blister pack with foam insert protection |
| Label Information | Model code, grade, MPN, batch number, barcode |
| Minimum Order | 1 pack (10 pieces) |
| Bulk Pricing | Available for orders ≥50 packs. Contact sales for quotation. |
| Warranty | Full manufacturer warranty against material & coating defects |
Catalog Meta Data
| Meta Field | Value |
|---|---|
| Manufacturer | Kyocera Corporation (Japan) |
| Product Series | CA5 Series |
| Catalog / MPN | TAC04431 |
| Country of Origin | Japan |
| Coating Origin | CVD coating applied in Japan |
| Quality Standard | ISO 9001, ISO 14001 certified manufacturing |
| RoHS Compliance | Compliant (2011/65/EU) |
| REACH Compliance | Compliant (EC 1907/2006) |
✓ Genuine Kyocera Product
| Manufacturer | Kyocera Corporation |
|---|---|
| Status | Verified Original Product |
| Quality Assurance | Guaranteed Genuine Kyocera Components |
発送・在庫情報
We ship worldwide through our strategic global logistics network. Products are dispatched directly from our international distribution facilities to ensure efficient delivery and customs clearance.
-
Stock Enquiries (在庫確認):
Contact our logistics team at sales.kyotow@gmail.com for real-time inventory status and dispatch location information. -
In-Stock Items (在庫あり):
Normally dispatched within 3 business days from the nearest regional warehouse. -
Factory Procurement (取寄せ):
Manufacturing and dispatch typically require 4–5 weeks. Once production begins, cancellations cannot be accommodated. -
Authenticity Guarantee (本物保証):
All products sold by Kyotow are 100% genuine and sourced through authorized Japanese and international distribution channels.
正確な製品情報
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.
返品・キャンセルポリシー
-
100% Accuracy Guarantee:
Full refund or replacement will be provided if the verified Kyocera item received differs from the official item code specified in your order confirmation. -
Order Finality:
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?
Contact our industrial tooling specialists for application support, tooling recommendations, datasheets, and compatibility verification.
sales.kyotow@gmail.comDirect Supply Chain Transparency サプライチェーンの透明性
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。
Domestic Sourced
Procured straight from Japan's local wholesale networks to capture maximum market arbitrage.
100% Genuine
Zero counterfeit risk. All items are brand-new, authentic factory-sealed Japanese stock.
No Regional Markups
We bypass Western corporate sales teams and localized regional overhead costs entirely.
