Kyocera DCMT070202
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- Stock: In Stock
- Model: KPD001
- Weight: 0.10kg
- Manufactured: In Japan
- Ships: Worldwide
- Item Code: TBR02002
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1. Product Overview
The Kyocera DCMT070202 is a precision indexable turning insert engineered by Kyocera in Japan for CNC lathe production. Built around a Rhombic 55° geometry with a 55° corner angle, 7.75 mm cutting edge length and 6.35 mm inscribed circle, 2.38 mm thickness and a 0.2 mm nose radius, the DCMT070202 is designed for profiling & copy turning; access to shoulders and complex contours. The 7° clearance keeps cutting forces controlled while the M-class tolerance (sintered/molded general class; most common for general machining) guarantees repeatable indexing accuracy.
2. Engineering Quick Reference
| Parameter | Specification |
|---|---|
| Full Product Name | Kyocera DCMT070202 |
| ISO Ordering Code | DCMT070202 |
| Insert Shape | Rhombic 55° (55°) |
| Cutting Edge Length | 7.75 mm |
| Inscribed Circle | 6.35 mm |
| Thickness | 2.38 mm |
| Nose Radius | 0.2 mm |
3. ISO 1832 Designation — Complete Breakdown
| ISO 1832 Position | Code | Decoded Meaning |
|---|---|---|
| Position 1 — Insert Shape | D | Rhombic 55° (55° corner) |
| Position 2 — Clearance Angle | C | 7° |
| Position 3 — Tolerance Class | M | Sintered/molded general class; most common for general machining — I.C. ±0.05–0.15 (size dep.), thickness ±0.08–0.18 |
| Position 4 — Fixing / Hole | T | With hole, one countersunk face — screw mounting |
| Position 5 — Edge Length Code | 07 | 7.75 mm (I.C. 6.35 mm) |
| Position 6 — Thickness Code | 02 | 2.38 mm |
| Position 7 — Nose Radius Code | 02 | 0.2 mm |
4. Insert Geometry & Engineering Dimensions
| Parameter | Specification |
|---|---|
| Insert Shape | Rhombic 55° (55°) |
| Cutting Edge Length | 7.75 mm |
| Inscribed Circle (I.C.) | 6.35 mm |
| Insert Thickness | 2.38 mm |
| Nose Radius | 0.2 mm |
| Clearance Angle | 7° |
| Usable Cutting Edges | 2 per face |
| Edge Strength Rating | Good |
| Fixing | With hole, one countersunk face — screw mounting |
| Geometry Tolerance | I.C. ±0.05–0.15 (size dep.), thickness ±0.08–0.18 |
5. Grade Technology — Substrate & Coating
| Parameter | Specification |
|---|---|
| Grade | Premium Carbide |
| Substrate | Micro-grain WC-Co tungsten carbide |
| Hardness | HRA 91.5–92.5 |
| Transverse Rupture Strength | ≈ 3,400–3,800 MPa |
6. Chipbreaker Geometry & Working Window
Standard molded geometry: Molded 3D chipbreaker optimized for stable chip curling and evacuation across the general feed range.
| Application Zone | Feed fn (mm/rev) | Depth of Cut ap (mm) |
|---|---|---|
| Finishing | 0.05–0.15 | 0.10–0.2 |
| Medium cutting | 0.05–0.12 | 0.2–0.6 |
| Roughing | 0.12–0.2 | 0.6–1.2 |
7. Depth-of-Cut Guide
| Cut Type | Recommended ap Range | Limiting Factor |
|---|---|---|
| Finishing | 0.05–0.2 mm | Surface finish / vibration |
| Medium | 0.2–0.6 mm | Chipbreaker working range |
| Roughing (max) | up to 1.2 mm (≈ 0.6 × 7.75 mm edge) | Edge length & machine power |
8. Recommended Workpiece Materials
Optimized for: steel, stainless steel, cast iron and non-ferrous alloys. Typical hardness window HB 150–300 for steels; see the cutting-condition tables for per-material parameters.
9. Application Capability Map
| Operation | Rating | Notes |
|---|---|---|
| External Turning (longitudinal) | Excellent | Primary operation |
| Facing | Excellent | Full facing capability |
| Profiling / Copy Turning | Very Good | Rhombic 55° corner access |
| Interrupted Cut | Fair | Reduce feed 20–30% |
| Internal Boring (matching bar) | Good | Positive geometry preferred |
10. Recommended Cutting Conditions — by Workpiece Material
| Workpiece Material | Vc (m/min) | fn (mm/rev) | ap (mm) | Coolant |
|---|---|---|---|---|
| Carbon Steel (S45C/C45, HB 180) | 144–206 | 0.11–0.25 | 0.8–2.8 | Wet (emulsion 6–10%) |
| Alloy Steel (SCM440/4140, HB 280) | 144–206 | 0.11–0.25 | 0.8–2.8 | Wet (emulsion 6–10%) |
| Stainless Steel (SUS304/1.4301) | 112–161 | 0.1–0.22 | 0.7–2.5 | Wet (emulsion 6–10%) |
| Gray Cast Iron (FC250/GG25) | 128–184 | 0.12–0.28 | 0.9–3.1 | Dry / MQL |
| Nodular Cast Iron (FCD450) | 128–184 | 0.12–0.28 | 0.9–3.1 | Dry / MQL |
| Heat-Resistant Alloy (Inconel 718) | 36–51 | 0.07–0.15 | 0.6–2.1 | Wet (emulsion 6–10%) |
| Titanium Alloy (Ti-6Al-4V) | 36–51 | 0.07–0.15 | 0.6–2.1 | Wet (emulsion 6–10%) |
11. Cutting Conditions — by Operation Type
| Operation | Vc factor | Feed fn (mm/rev) | DoC ap (mm) | Expected Surface Ra (µm) |
|---|---|---|---|---|
| Finishing | × 1.15 of table value | 0.05–0.07 | 0.05–0.2 | 1.6–3.1 |
| Medium | × 1.00 | 0.07–0.14 | 0.2–0.5 | 3.1–12.2 |
| Roughing | × 0.80–0.90 | 0.14–0.22 | 0.5–1 | 12.2–30.3 |
Programming note: Values assume a rigid setup with tool overhang ≤ 4× shank diameter and continuous cut. For interrupted cuts reduce feed 20–30% and Vc 10%.
12. Surface Finish vs Feed (Theoretical Ra)
| Feed fn (mm/rev) | Theoretical Ra with r=0.2 mm (µm) | Typical Operation |
|---|---|---|
| 0.05 | 1.6 | Finishing |
| 0.08 | 4.0 | Medium |
| 0.10 | 6.3 | Medium |
| 0.15 | 14.1 | Roughing |
| 0.20 | 25.0 | Roughing |
| 0.25 | 39.1 | Roughing |
| 0.30 | 56.2 | Roughing |
| 0.40 | 100.0 | Roughing |
Formula: Ra ≈ fn² / (8 × r). With the r = 0.2 mm nose radius of this insert, feeds up to 0.05 mm/rev stay in finishing territory (Ra ≤ 1.6 µm). Wiper-chipbreaker inserts allow roughly double these feeds at equal finish.
13. Edge Preparation & Wear Limits
| Wear Criterion | Limit | Action |
|---|---|---|
| Flank wear VB | 0.30 mm (finishing) / 0.50 mm (roughing) | Index to fresh corner |
| Crater depth KT | 0.10 mm | Reduce Vc 10–15% or improve coolant |
| Notch wear at DoC line | Visible notch | Vary DoC between passes; reduce Vc |
| Built-up edge | Any BUE on rake | Increase Vc; check coolant concentration |
| Chipping / plastic deformation | Edge micro-fracture or deformed nose | Reduce feed/Vc; verify rigidity; tougher grade |
14. Compatible Toolholders
ISO holders for 55° rhombic inserts. Always match the insert seat size to the holder designation.
| Compatible Holder Family | Seat Size | Mounting |
|---|---|---|
| MDJNR/L | Seat size 07 | External / Internal |
| PDJNR/L | Seat size 07 | External / Internal |
| DDJNR/L | Seat size 07 | External / Internal |
| SDJCR/L (positive boring) | Seat size 07 | External / Internal |
15. Troubleshooting Guide
| Problem | Likely Cause | Corrective Action |
|---|---|---|
| Short tool life | Vc too high / wrong grade | Reduce Vc 10–20%; select more wear-resistant grade |
| Edge chipping | Impact / vibration / feed too high at entry | Reduce feed at entry; improve rigidity; tougher grade |
| Poor surface finish | BUE, worn nose radius, feed too high | Increase Vc; reduce feed; check nose wear |
| Long stringy chips | Feed below chipbreaker window | Increase feed or DoC into chipbreaker working range |
| Vibration marks | Overhang too long / loose clamping | Shorten overhang (≤4×D); re-torque clamping screw |
| Dimension drift | Nose wear / thermal growth | Index insert; apply tool-wear compensation |
16. Operating & Handling Guidelines
- Clean the holder seat thoroughly before mounting; any chip or burr under the insert causes edge breakage
- Tighten the clamping screw to 2.0–4.0 Nm (size-dependent) with a torque wrench — never over-tighten
- Check insert seating runout ≤ 0.02 mm TIR before the first cut
- Run-in new edges at 80% Vc for the first 2–3 minutes of cut
- Index at the wear limits — do not run to catastrophic failure
- Apply coolant continuously; on/off coolant cycling causes thermal cracks
17. Quality Assurance & Manufacturing
| Quality Attribute | Specification |
|---|---|
| Manufacturing Standard | ISO 9001:2015 certified Kyocera production, Japan |
| Dimensional Inspection | 100% inspection with CMM-class tolerance control |
| Edge Inspection | Microscopic cutting-edge inspection on every piece |
| Traceability | Laser-marked lot code on packaging; full batch traceability |
| Country of Origin | Japan |
18. Packaging & Ordering Information
| Parameter | Specification |
|---|---|
| Manufacturer Part Number | See product name |
| Ordering Code | DCMT070202 |
| Standard Packaging | 10 inserts per box (plastic case with individual pockets) |
| Minimum Order Quantity | 1 box (10 pcs) |
| Stock Status | In stock — ships within 1–3 business days |
| Warranty | 90-day manufacturing-defect warranty |
19. Catalog Meta Data
| Parameter | Specification |
|---|---|
| Brand | Kyocera |
| Product Type | Indexable Turning Insert |
| Full Product Name | Kyocera DCMT070202 |
| ISO Code | DCMT070202 |
| Shape | Rhombic 55° |
| Nose Radius | 0.2 mm |
| Origin | Japan |
20. Frequently Asked Questions
Q: What materials can the DCMT070202 machine?
A: Steels, stainless steels and cast iron within its application window.
Q: What feed should I start with on the DCMT070202?
A: Start at fn ≈ 0.07 mm/rev — inside the standard chipbreaker window — and adjust toward 0.14 mm/rev for medium cutting with the r = 0.2 mm nose radius.
Q: Which toolholder fits the DCMT070202?
A: Any ISO holder with a Rhombic 55° seat in size 07 (e.g., the families listed in Section 14). Match the seat size exactly.
Q: When must I index the DCMT070202?
A: Index at VB = 0.30 mm flank wear for finishing or 0.50 mm for roughing — running beyond this risks edge collapse and workpiece damage.
Q: Is the DCMT070202 suitable for interrupted cuts?
A: Light interruptions only; reduce feed 20–30% and consider a tougher grade for heavy interruptions.
21. Engineering Support
Kyotow.com provides free application-engineering support for this insert: grade selection, cutting-parameter optimization and tool-life troubleshooting. Contact our technical desk with your workpiece material, hardness and machine specification.
Why Buy from Kyotow.com? 100% genuine OEM Kyocera cutting tools sourced through authorized channels. Full manufacturer warranty & batch traceability. Fast worldwide shipping with tracked delivery. Free engineering support for cutting parameter selection, grade choice and application troubleshooting.
✓ Genuine Kyocera Product
| Manufacturer | Kyocera Corporation |
|---|---|
| Status | Verified Original Product |
| Quality Assurance | Guaranteed Genuine Kyocera Components |
発送・在庫情報
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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
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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。
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