Kyocera CPMH090304R-Y KW10 TWE04654 Turning Insert - Boring
- Stock: In Stock
- Model: CPMH
- Weight: 0.04kg
- Manufactured: In Japan
- Ships: Worldwide
- Item Code: TWE04654
CPMH321RY KW10 Grade Uncoated Carbide, Indexable Turning Insert For Boring, Internal Facing
Product Overview
The CPMH090304R-Y is a precision-engineered uncoated carbide indexable turning insert manufactured by Kyocera in Japan. Designed for Boring, Internal Facing, this Grade KW10 80 degree diamond insert delivers exceptional surface finish, dimensional accuracy, and extended tool life on CNC turning centers and milling machines.
Engineered with optimized geometry that minimizes cutting forces and enhances chip control, the CPMH090304R-Y ensures consistent and repeatable results across high-volume production runs. The Y chipbreaker profile provides superior chip evacuation, while the 1/64" nose radius produces consistent surface finishes on non-ferrous metals, plastics, and titanium alloys.
ISO Designation Breakdown
The ISO code CPMH090304R-Y follows the international standard for indexable insert identification:
| ISO Code Analysis – CPMH090304R-Y | |
|---|---|
| Complete ISO Code | CPMH090304R-Y |
| Shape (1st Letter) | C – 80° Included Angle |
| Relief/Clearance (2nd Letter) | P – Standard Clearance |
| Tolerances (3rd Letter) | M – Precision Class |
| Type/Fixing (4th Letter) | H – Hole + Chipbreaker |
| Inscribed Circle (IC) | 09 × 1/16" ≈ 3/8" |
| Thickness (T) | 03 × 1/16" ≈ 1/8" |
| Corner Radius (R) | 04 × 1/100 mm ≈ 1/64" |
| Chipbreaker / Hand | Y – Right-Hand |
Engineering Dimensions & Geometry
| Dimensional Specifications | |
|---|---|
| Inscribed Circle (IC) | 3/8" |
| Thickness (T) | 1/8" |
| Corner Radius (R) | 1/64" |
| Included Angle | 80° |
| Shape | 80 Degree Diamond |
| Chipbreaker | Y |
| Hand | Right-Hand |
| Number of Cutting Edges | 2 |
| Tolerance Class | Precision (±0.025 mm) |
Grade Details – KW10 Key Characteristics
- Substrate: Ultra-fine grain carbide (ISO K10 equivalent)
- Binder: Cobalt-enriched for enhanced toughness
- Hardness: ~92.0 HRA (±0.5)
- TRS: ≥2,200 MPa
- Grain Size: 0.5–0.8 μm
- Coating: Uncoated – Natural sharp edge for non-ferrous materials
- Color Code: White/silver (uncoated)
Grade Comparison Matrix
| Grade | ISO Class | Coating | Best For |
|---|---|---|---|
| KW10 | K10 | Uncoated | Aluminum, Copper, Plastics, Titanium |
| KW20 | K20 | Uncoated | Cast Iron, Hard Plastics |
| CA515 | P10 | TiAlN | Steel, Stainless Steel |
| PR930 | P20 | TiCN | General Steel Machining |
Chipbreaker Profile – Y
The Y chipbreaker profile on the CPMH090304R-Y is specifically engineered for boring applications:
- General purpose chipbreaker with balanced cutting edge strength and chip control.
- Chip Control: Curved groove design directs chips away from cutting zone
- Edge Preparation: 1/64" nose radius for consistent surface finish
- Application Range: Finishing to medium machining of non-ferrous materials
Recommended Applications & Workpiece Materials
The CPMH090304R-Y with Grade KW10 is optimized for the following applications:
- Boring
- Internal Facing
Compatible Workpiece Materials
- Aluminum & Alloys: Excellent chip control, no built-up edge
- Copper & Brass: Mirror finish capability on non-ferrous metals
- Titanium: Stable cutting at moderate speeds
- Cast Iron: Good performance on non-ferrous castings
- Plastics & Composites: Clean cut without melting or chipping
- Non-Metals: Wood, carbon fiber, ceramics (green state)
Application Map by Operation
| Operation | Suitability | Recommended |
|---|---|---|
| External Turning | ★★★★★ | Primary application – excellent chip control |
| Internal Facing | ★★★★☆ | Stable performance with proper toolholder |
| Facing | ★★★★★ | Optimal for face turning non-ferrous components |
| Profiling | ★★★★☆ | Good for contouring with 1/64" radius |
| Copying | ★★★★☆ | Suitable for form copying operations |
| Back Boring | ★★★☆☆ | Use with appropriate back-boring holder |
| Undercutting | ★★★★☆ | Precise groove geometry control |
| Sub-Spindle | ★★★★★ | Ideal for small-part finishing |
Recommended Cutting Conditions
Parameters for Grade KW10 Uncoated inserts. Values assume stable setup and flood coolant where noted:
| Workpiece Material | Cutting Speed Vc (m/min) | Feed fn (mm/rev) | Depth of Cut ap (mm) |
|---|---|---|---|
| Aluminum (wrought) | 300–800 | 0.05–0.30 | 0.10–3.0 |
| Copper / Brass | 200–500 | 0.05–0.25 | 0.10–2.5 |
| Titanium Alloy | 30–60 | 0.08–0.20 | 0.20–2.0 |
| Cast Iron (Non-Ferrous) | 100–200 | 0.10–0.30 | 0.20–3.0 |
| Plastics / Composites | 200–600 | 0.05–0.30 | 0.10–4.0 |
Note: Values are starting recommendations. Adjust based on machine rigidity, workpiece condition, and desired surface finish. Use coolant for titanium and heat-sensitive materials.
Operating Guidelines
- Tool Setup: Ensure insert seat is clean and undamaged before clamping
- Cutting Fluid: Flood coolant recommended for aluminum and titanium; dry cutting acceptable for brass and plastics
- Edge Inspection: Check cutting edge under 10× magnification before use – no visible chipping permitted
- Speed Ramp: Start at 70% of recommended Vc and increase gradually while monitoring tool wear
- Chip Control: Verify chip curl and evacuation; adjust feed if chips are too fine or too heavy
- Tool Life: Monitor flank wear (VB). Replace insert when VB exceeds 0.15 mm for finishing or 0.30 mm for roughing
- Storage: Keep inserts in original packaging away from moisture and corrosive environments
Toolholder Compatibility
The CPMH090304R-Y is compatible with standard ISO toolholders designed for CPMH inserts with 3/8" inscribed circle and 1/8" thickness:
- Toolholder Style: C-type (external/internal turning holders)
- Clamping System: Lever lock or screw clamp (depending on holder design)
- Insert Seat: Standard pocket for 3/8" IC, 1/8" thick inserts
- Hand Compatibility: Right-Hand orientation required
- Shank Size: Compatible with 16×16 mm to 25×25 mm toolholders
- Overhang: Keep tool overhang ≤ 4× shank width for optimal rigidity
Recommended Kyocera toolholder series: CPMH-type external/internal turning holders. Contact Kyotow.com technical support for specific holder recommendations.
Packaging & Ordering Information
- Packaging: Individual plastic insert box with foam protection (10 inserts per pack)
- Labeling: Each box marked with ISO designation, grade, batch number, and barcode
- Minimum Order: 10 inserts (1 box)
- Stock Status: In stock – ships within 24 hours
- Lead Time: Bulk orders (500+) – 3–5 business days
- Warranty: Genuine Kyocera product with full manufacturer warranty
- Returns: Unused inserts in original packaging accepted within 30 days
Catalog Meta Data
| Catalog Page | Kyocera Turning Insert Catalog 2026 – Section CPMH |
| Product Group | Indexable Turning Inserts – Carbide Grade KW10 |
| ECCN | 1C992.b (General Industrial Cutting Tools) |
| HTS Code | 8209.00.00 (Industrial Carbide Inserts) |
| Country of Origin | Japan |
| RoHS Status | Compliant – Lead-free carbide substrate |
| REACH Status | Compliant – No SVHC substances above threshold |
Why Buy from Kyotow.com?
- Genuine OEM industrial cutting tools
- 100% genuine OEM parts backed by full manufacturer warranty
- Fast worldwide shipping with tracked delivery
- Expert CNC tooling application support and technical assistance
- Bulk and institutional orders welcome
