VBGT221LY KW10 Grade Uncoated Carbide, Indexable Turning Insert For Back Boring, Copying, External Turning, Facing, Internal Facing, Profiling, Undercutting
- Stock: In Stock
- Model: VBGT
- Weight: 0.04kg
- Manufactured: In Japan
- Ships: Worldwide
- Item Code: TWE00573
VBGT221LY KW10 Grade Uncoated Carbide, Indexable Turning Insert For Back Boring, Copying, External Turning, Facing, Internal Facing, Profiling, Undercutting
Product Overview
The Kyocera VBGT110304L-Y Grade KW10 Uncoated Carbide Indexable Turning Insert is a precision-engineered cutting tool manufactured by Kyocera in Japan. Designed for Back Boring, Copying, External Turning, Facing, Internal Facing, Profiling, Undercutting operations, this 35 degree diamond insert delivers fine surface finish, effective chip management, and enhanced edge retention across CNC turning centers and milling machines. The uncoated KW10 grade substrate is optimized for stable cutting of cast iron, non-ferrous materials, non-metals, and titanium alloys.
ISO Designation Breakdown
The ISO designation VBGT110304L-Y encodes the complete geometric and functional specification of this insert:
| Character | Meaning |
|---|---|
| V | Shape: 35 |
| B | Clearance Angle: 35° |
| GT | Tolerance Class / Type |
| 11 | Inscribed Circle: 1/4" |
| 03 | Thickness: 1/8" |
| 04 | Corner Radius: 1/64" |
| L | Hand: Left-Hand |
| -Y | Chipbreaker: Y |
Engineering Dimensions & Geometry
| Dimensions & Geometry | |
|---|---|
| Inscribed Circle (IC) | 1/4" (11mm) |
| Thickness (S) | 1/8" (3.18mm) |
| Corner Radius (RE) | 1/64" (0.4mm) |
| Included Angle | 35° |
| Number of Cutting Edges | 2 |
| Hand | Left-Hand |
| Chipbreaker | Y |
| Tolerance Class | ISOI (Precision Ground) |
Grade Details - Key Grade Characteristics
The KW10 grade is a fine-grained uncoated tungsten carbide (WC-Co) substrate classified under ISO K10. Key characteristics include:
- High hardness (HRA 91.5) with excellent wear resistance
- Fine grain structure (0.5-0.8 μm) for sharp cutting edges and fine surface finish
- Optimal cobalt binder content (6%) balancing toughness and hardness
- Uncoated surface prevents built-up edge (BUE) on aluminum and titanium
- Chemically stable at high temperatures, ideal for non-ferrous machining
Grade Comparison Matrix
Select the optimal grade for your workpiece material and cutting conditions:
| Grade | ISO Class | Coating | Primary Use |
|---|---|---|---|
| KW10 | K10 | Uncoated | Cast Iron, Non-Ferrous, Non-Metals, Titanium |
| KW20 | K20 | Uncoated | General Purpose, Interrupted Cutting |
| CA310 | P10 | CVD | Steel, Stainless Steel |
Chipbreaker Profile
The Y chipbreaker geometry features a precisely ground groove and land configuration designed for effective chip management in back boring applications. The chipbreaker width and depth are optimized for the 0.4mm corner radius, ensuring manageable chip forms across the recommended feed range. This profile minimizes cutting forces and reduces heat generation at the tool tip.
Recommended Applications & Workpiece Materials
- Cast Iron: Gray cast iron (GG20-GG40), nodular cast iron (GGG40-GGG70) — stable cutting, excellent finish
- Aluminum Alloys: 1xxx, 2xxx, 5xxx, 6xxx, 7xxx series — prevents BUE, fine surface finish
- Copper & Brass: Pure copper, brass (CuZn), bronze — clean cutting, no edge buildup
- Titanium Alloys: Ti-6Al-4V, Ti-5Al-2.5Sn — chemically stable, reduced diffusion wear
- Non-Metals: Plastics, composites, graphite — sharp edge prevents delamination
Application Map by Operation
| Operation | Suitability | Notes |
|---|---|---|
| External Turning | ★★★★★ Excellent | Primary application, continuous to light interrupted cuts |
| Facing | ★★★★★ Excellent | 35 Degree Diamond geometry ideal for facing to center |
| Profiling | ★★★★☆ Very Good | 1/64" radius enables fine contouring |
| Copying | ★★★★☆ Very Good | Stable for form turning and copy lathe work |
| Back Boring | ★★★☆☆ Good | Use with appropriate back boring bar, moderate depths |
| Undercutting | ★★★☆☆ Good | Suitable for groove undercuts with reduced depths |
Recommended Cutting Conditions
Starting parameters for wet and dry machining. Adjust based on machine rigidity and workpiece condition:
| Parameter | Cast Iron | Aluminum | Titanium |
|---|---|---|---|
| Cutting Speed Vc (m/min) | 80-180 | 160-360 | 48-108 |
| Feed fn (mm/rev) | 0.10-0.30 | 0.10-0.30 | 0.08-0.24 |
| Depth of Cut ap (mm) | 0.3-3.0 | 0.3-3.0 | 0.1-1.5 |
Operating Guidelines
- Use sharp, rigid toolholders with minimal overhang to prevent vibration
- For cast iron: dry cutting recommended; for aluminum: use air blast or mist coolant
- Titanium machining: use generous coolant flow to prevent heat buildup and work hardening
- Ensure secure clamping; verify insert seat cleanliness before mounting
- Index insert when flank wear reaches 0.2-0.3mm or when surface finish degrades
- Store inserts in original packaging away from moisture and corrosive environments
Toolholder Compatibility
SVJCL, SVJCR, SVQCR, SVQCL, MVJNR, MVJNL series toolholders with 93° or 107.5° entering angle. Compatible with standard DIN 4980 (ISO 5610) shank sizes.
Ensure the toolholder pocket angle matches the insert included angle (35°). Verify clamping screw torque per manufacturer specification (typically 2.5-4.0 N·m for M2.5 screws).
Packaging & Ordering Information
- Packaging: Individual plastic insert boxes, 10 inserts per pack (standard)
- Minimum Order Quantity: 1 pack (10 inserts)
- MPN / Order Code: TWE00573
- ISO Designation: VBGT110304L-Y
- ANSI Designation: VBGT221LKW10
- Country of Origin: Japan
- Genuine Kyocera product with full manufacturer warranty
Catalog Meta Data
| Product Catalog Information | |
|---|---|
| Product Family | Indexable Turning Inserts |
| Insert Series | VBGT Series |
| Grade Family | KW (Uncoated Carbide) |
| ISO Application Group | K (Cast Iron / Non-Ferrous) |
| E-Commerce Category | Turning Inserts > VBGT > Uncoated |
| Search Keywords | VBGT110304L-Y, KW10, Kyocera VBGT, uncoated carbide, CNC insert |
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To guarantee absolute accuracy for your machining requirements, please cross-reference the exact Kyocera Item Code, Item Name, and Material Grade.
🔹How to Proceed with Your Purchase:
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We offer a full refund or replacement if the verified Kyocera part number of the item received differs from the official item code specified in your order confirmation.
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If you have any doubts regarding tool geometries, coatings, or application grades, please consult our support team at sales.kyotow@gmail.com before finalizing your procurement.
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