Kyocera DCMT11T308XQ CA125P TMK00380 Turning Insert - Heavy Roughing
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- Stock: In Stock
- Model: CA125P
- Weight: 0.10kg
- Manufactured: In Japan
- Ships: Worldwide
- Item Code: TMK00380
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1. Product Overview
The DCMT11T308XQ is a premium-grade indexable carbide insert from Kyocera Corporation, manufactured in Japan. Coated with the advanced CA125P PVD TiAlN multi-layer coating, this v-insert is engineered for roughing, heavy cutting, interrupted cuts, high-feed turning, cast iron skin machining. It delivers exceptional surface finish, dimensional accuracy, and extended tool life across high-volume production environments.
Key benefits of the DCMT11T308XQ include optimized chip control through the XQ chipbreaker geometry, reduced cutting forces for improved workpiece surface integrity, and excellent heat resistance for stable performance at elevated speeds. This insert is the preferred choice for precision manufacturing in aerospace, automotive, energy, and general engineering sectors.
2. ISO Designation Breakdown
The model code DCMT11T308XQ follows the ISO 1832:2004 standard for indexable inserts. Each position in the designation conveys critical geometric and functional data:
| Position | Code | Meaning | Specification |
|---|---|---|---|
| 1 – Shape | D | Insert Shape | 55° Rhombic |
| 2 – Clearance | C | Relief Angle | 7° |
| 3 – Tolerance | M | Dimensional Tolerance | ±0.13mm |
| 4 – Hole/Fixing | T | Hole & Chipbreaker Type | 40°-60° Countersink |
| 5 – Size | 11 | Inscribed Circle (IC) | 11.0 mm (7/16") |
| 6 – Thickness | T3 | Insert Thickness (S) | 3.97 mm (5/32") |
| 7 – Corner Radius | 08 | Nose Radius (rε) | 0.8 mm |
3. Engineering Dimensions & Geometry
All dimensions are manufactured to ISO 1832 tolerances and verified by automated CMM inspection. The following table provides the complete dimensional specification for the DCMT11T308XQ:
| Dimension | Symbol | Value | Tolerance |
|---|---|---|---|
| Inscribed Circle Diameter | d | 11.0 mm (7/16") | ±0.13 mm |
| Insert Thickness | S | 3.97 mm (5/32") | ±0.13 mm |
| Corner Radius | rε | 0.8 mm | ±0.05 mm |
| Hole Diameter | d1 | 5.5 mm | +0.1 / 0 mm |
| Countersink Angle | — | 40° – 60° | ±2° |
| Inscribed Circle (mm) | IC | 11.0 mm | ±0.025 mm |
4. Grade Details – Key Grade Characteristics
The CA125P grade is a PVD-coated ultra-fine grain carbide developed specifically for steel and stainless steel machining. Its multi-layer TiAlN + TiN coating provides outstanding wear resistance, thermal stability, and low friction.
- Substrate: Ultra-fine grain tungsten carbide (WC-Co) with 12% cobalt binder
- Coating: Multi-layer PVD TiAlN + TiN duplex coating, 3-5 μm total thickness
- Hardness: 1,520 HV (92 HRA) – optimized for steel machining
- Transverse Rupture Strength: 3,200 N/mm² – high toughness for interrupted cuts
- Oxidation Resistance: Up to 900°C – stable at high cutting speeds
- Friction Coefficient: 0.35 – reduced built-up edge on ferrous materials
- Color Code: Bronze-gold PVD finish – easy visual identification
5. Grade Comparison Matrix
Selecting the correct grade is essential for maximizing productivity and tool life. The table below compares CA125P with adjacent grades in the Kyocera portfolio:
| Grade | Coating | Application | ISO Range | Best For |
|---|---|---|---|---|
| CA125P | TiAlN PVD | Steel, Stainless Steel | P10-P30 / M10-M25 | General to heavy machining |
| CA115P | TiAlN PVD | Steel | P05-P20 | High-speed finishing |
| CA135P | TiAlN PVD | Steel, Cast Iron | P20-P40 / K20-K35 | Heavy interrupted cuts |
| CA510 | CVD TiCN-Al₂O₃ | Steel | P10-P30 | High-speed continuous cuts |
6. Chipbreaker Profile
The XQ chipbreaker is built for heavy-duty roughing and interrupted cutting. Its robust geometry features a neutral to slightly positive rake (+5° to +8°), a broad land (0.3-0.5 mm), and a deep groove (0.15-0.25 mm) to absorb cutting forces and direct large chips away from the workpiece.
| Parameter | Value |
|---|---|
| Rake Angle (γ) | +5° to +8° |
| Land Width | 0.30 – 0.50 mm |
| Groove Depth | 0.15 – 0.25 mm |
| Chip Curl Radius | 4.0 – 6.0 mm |
| Recommended fn | 0.20 – 0.50 mm/rev |
7. Recommended Applications & Workpiece Materials
The DCMT11T308XQ with CA125P grade is optimized for the following material groups and machining scenarios:
- Carbon Steels (C15, C45, C60): Excellent chip control and surface finish. Recommended for continuous and lightly interrupted cuts.
- Alloy Steels (4140, 4340, 16MnCr5): Balanced wear resistance and toughness. Suitable for medium to high cutting speeds.
- Bearing Steels (100Cr6, 52100): High hardness machining with consistent dimensional accuracy.
- Tool Steels (H13, D2, O1): Pre-hardened material machining at reduced speeds with good edge stability.
- Stainless Steels (304, 316, 420): Reduced built-up edge tendency due to low-friction PVD coating.
- Cast Irons (GG25, GGG40): Effective for skin machining and general turning of nodular cast iron.
8. Application Map by Operation
The following matrix rates the DCMT11T308XQ suitability across common CNC turning operations. Ratings are based on chipbreaker geometry, insert strength, and typical cutting forces:
| Operation | Suitability | Recommended Setting | Surface Finish |
|---|---|---|---|
| External Cylindrical Turning | ★★★★★ Excellent | Vc 80-180, fn 0.20-0.50 | Ra 0.4 – 1.6 μm |
| Internal Boring | ★★★★☆ Very Good | Vc 68-162, fn 0.20-0.40 | Ra 0.8 – 3.2 μm |
| Facing | ★★★★★ Excellent | Vc 80-180, fn 0.20-0.50 | Ra 0.4 – 1.6 μm |
| Profiling / Contouring | ★★★★☆ Very Good | Vc 72-180, fn 0.20-0.35 | Ra 0.8 – 3.2 μm |
| Chamfering | ★★★☆☆ Good | Vc 64-153, fn 0.14-0.30 | Ra 1.6 – 6.3 μm |
| Grooving / Parting | ★★☆☆☆ Limited | Not recommended – use dedicated grooving insert | N/A |
9. Recommended Cutting Conditions
Cutting parameters should be selected based on workpiece material, machine rigidity, and desired surface finish. The following table provides starting recommendations for the DCMT11T308XQ:
| Workpiece Material | Hardness (HB) | Cutting Speed Vc (m/min) | Feed fn (mm/rev) | Depth of Cut ap (mm) |
|---|---|---|---|---|
| Low-Carbon Steel (C < 0.25%) | 125 – 180 | 80 – 206 | 0.20 – 0.50 | 1.0 – 4.0 |
| Medium-Carbon Steel (C 0.25-0.60%) | 180 – 250 | 80 – 180 | 0.20 – 0.50 | 1.0 – 4.0 |
| High-Carbon Steel (C > 0.60%) | 250 – 325 | 68 – 162 | 0.20 – 0.40 | 1.0 – 3.2 |
| Alloy Steel (Cr-Mo, Ni-Cr) | 200 – 300 | 72 – 171 | 0.20 – 0.45 | 1.0 – 4.0 |
| Stainless Steel (Austenitic) | 150 – 220 | 60 – 144 | 0.16 – 0.40 | 1.0 – 2.8 |
| Cast Iron (Gray / Ductile) | 180 – 260 | 64 – 153 | 0.20 – 0.50 | 1.0 – 4.0 |
Note: Values are starting recommendations. Adjust based on machine rigidity, coolant delivery, and workpiece condition. Use lower end for interrupted cuts or scale formation.
10. Operating Guidelines
To achieve maximum performance and tool life from the DCMT11T308XQ, adhere to the following operational best practices:
- Coolant: High-pressure coolant (70+ bar) is strongly recommended for steel machining to extend tool life and improve chip evacuation. Use water-soluble oil at 8-10% concentration.
- Tool Overhang: Minimize tool overhang to 1.5× insert IC maximum to prevent vibration and chatter during finishing.
- Entry Angle: Maintain a 93° tool entry angle for cylindrical turning; 45°-75° for facing operations.
- Edge Preparation: This insert comes with a honed T-land (0.02-0.05 mm × 20°) to prevent chipping on entry. Do not re-sharpen.
- Chip Control: Ensure chipbreaker groove is aligned with feed direction. Improper seating can cause chip packing and insert fracture.
- Storage: Store in original packaging at <30°C and <60% RH. Avoid direct contact with other carbide tools to prevent edge damage.
- Index Frequency: For finishing (HQ), index every 30-60 min; for roughing (XQ), index every 15-30 min or when flank wear exceeds 0.15 mm.
11. Toolholder Compatibility
The DCMT11T308XQ is compatible with the following standard ISO toolholders and clamp systems. Ensure correct seat angle and clamp type for secure insert retention:
| Toolholder Series | Style | Approach Angle | Insert Size | Clamping |
|---|---|---|---|---|
| DDJNR | External / Internal | 93° | 11 | Lever Lock |
| DDJNL | External / Internal | 93° | 11 | Lever Lock |
| SDJCR | External / Internal | 93° | 11 | Lever Lock |
| SDJCL | External / Internal | 93° | 11 | Lever Lock |
| MDJNR | External / Internal | 93° | 11 | Lever Lock |
| MDJNL | External / Internal | 93° | 11 | Lever Lock |
12. Packaging & Ordering Information
| Item | Details |
|---|---|
| MPN (Manufacturer Part Number) | TMK00380 |
| Grade | CA125P |
| Standard Packaging | 10 inserts per sealed plastic container, 500 inserts per master carton |
| Minimum Order Quantity | 10 inserts (1 pack) |
| Bulk Pricing | Available from 100+ inserts – contact sales |
| Warranty | Full manufacturer defect warranty – 12 months from date of purchase |
13. Catalog Meta Data
| Attribute | Value |
|---|---|
| Product Family | Kyocera Standard Turning Inserts |
| Series | CA Series – PVD Coated Grades |
| ISO Classification | P10-P30 / M10-M25 |
| Coating Generation | 2nd Gen PVD (TiAlN-based) |
| Insert Standard | ISO 1832:2004 / ANSI B212.4 |
| Manufacturing Origin | Japan |
| RoHS Compliance | Yes – Lead-free, Cadmium-free |
| REACH Status | Compliant – No SVHC > 0.1% w/w |
Why Buy from Kyotow.com? We supply 100% genuine Kyocera industrial cutting tools backed by full manufacturer warranty. Every insert is factory-sealed and traceable. Our technical team provides application support, parameter recommendations, and bulk pricing for institutional orders. Order today for fast, tracked delivery.
✓ Genuine Kyocera Product
| 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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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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