Kyocera GVFL300B KW10 Grade Uncoated Carbide Indexable Grooving Insert
- Stock: In Stock
- Model: GVF
- Weight: 0.01kg
- Manufactured: In Japan
- Ships: Worldwide
- Item Code: TWE02175
Kyocera GVFL300B KW10 Grade Uncoated Carbide Indexable Grooving Insert
Product Overview
The Kyocera GVFL300B KW10 Grade Uncoated Carbide Indexable Grooving Insert is a precision-engineered cutting tool manufactured by Kyocera in Japan. Designed for Grooving operations, this left-hand insert delivers exceptional surface finish, tight dimensional accuracy, and extended tool life on CNC turning centers.
With B-profile chipbreaker geometry and ultra-fine grain carbide substrate, the GVFL300B minimizes cutting forces and enhances chip control, ensuring consistent and repeatable results across high-volume production runs. The uncoated KW10 grade is optimized for stable cutting of cast iron, non-ferrous materials, non-metals, and titanium alloys.
ISO Designation Breakdown
| ISO Symbol | GVFL300B |
| G – Grooving | Primary application group: Grooving / Parting |
| V – Shape | Non-standard / special geometry (Non-Applicable) |
| F – Face Grooving | Face grooving optimized geometry |
| L/R – Hand | R = Right-Hand (clockwise entry) |
| 300 – Size | Insert size designation (nominal dimension × 0.1 mm) |
| B – Chipbreaker | B = Medium chipbreaker for general grooving |
Engineering Dimensions & Geometry
Complete engineering specifications, cutting geometry, and dimensional data:
| Geometry, Cutting Angles & Dimensions | |
|---|---|
| Radius Size | 0.008" |
| Thickness | 0.197" |
| Cutter Width | 0.1181 |
| Shape | Non-Applicable |
| Cutting Edges | 2 (indexable, double-sided) |
| Hand | Left-Hand |
| Chipbreaker | B |
Grade Details – Key Grade Characteristics
The KW10 grade is an uncoated ultra-fine grain tungsten carbide specifically developed for machining cast iron, non-ferrous metals, and non-metallic materials.
- Substrate: Ultra-fine grain uncoated tungsten carbide (K10 equivalent)
- Hardness: 92.0 HRA high hardness matrix
- Transverse Rupture Strength: 2,800 N/mm²
- Grain Size: Ultra-fine 0.5 μm WC-Co matrix
- Co Content: 6% cobalt binder
- Color Code: Gray (uncoated)
- ISO Application Group: K10-K20 (cast iron, non-ferrous, non-metals)
Grade Comparison Matrix
Select the optimal grade for your workpiece material and machining conditions:
| Grade | Coating | Hardness | Best For |
|---|---|---|---|
| KW10 | Uncoated | 92.0 HRA | Cast iron, non-ferrous, titanium |
| PR630 | PVD | 91.5 HRA | Steel, stainless steel |
| CA530 | CVD | 91.0 HRA | General steel machining |
Chipbreaker Profile
The B-profile chipbreaker delivers robust chip control for medium-to-heavy grooving operations. Features a deeper groove geometry (0.08 mm) with wider land (0.15 mm) to handle increased chip volume at higher feed rates. Designed for reliable chip evacuation in deep grooving and face grooving applications.
- Chipbreaker Depth: 0.08 mm
- Land Width: 0.15 mm
- Recommended Feed: 0.08–0.25 mm/rev
- Optimal for: Medium-to-heavy grooving, face grooving, deep grooves
Recommended Applications & Workpiece Materials
The KW10 grade with uncoated substrate is specifically engineered for stable machining of:
- Gray Cast Iron: Excellent wear resistance and thermal stability for continuous and interrupted cuts.
- Nodular Cast Iron: Handles abrasive carbide nodules with minimal edge chipping.
- Aluminum Alloys: Prevents built-up edge (BUE) due to low chemical affinity; delivers mirror surface finishes.
- Brass & Copper: High thermal conductivity prevents heat accumulation; sharp edge reduces burr formation.
- Titanium Alloys: Uncoated surface minimizes galling and adhesion common in Ti machining.
- Plastics & Composites: Clean shear action without delamination or fiber pull-out.
Application Map by Operation
Understand where the GVFL300B performs best across common turning operations:
| Operation | Suitability | Notes |
|---|---|---|
| Face Grooving | ✓ Good | Primary design intent |
| External Grooving | ✓ Good | Use appropriate external holder |
| Internal Grooving | ○ Limited | Check minimum bore diameter |
| Cut-Off | ✗ Not Recommended | Use dedicated cut-off inserts |
| Profiling | ○ Limited | Narrow width restricts profile flexibility |
Recommended Cutting Conditions
Starting parameters for the GVFL300B with KW10 grade. Adjust based on machine rigidity and surface finish requirements:
| Workpiece Material | Cutting Speed Vc (m/min) | Feed fn (mm/rev) | Depth of Cut ap (mm) |
|---|---|---|---|
| Gray Cast Iron (HB 180–220) | 80–180 | 0.08–0.20 | 0.8–3.0 |
| Nodular Cast Iron (HB 200–250) | 60–120 | 0.08–0.18 | 0.8–2.5 |
| Aluminum Alloy (Si<12%) | 200–400 | 0.10–0.30 | 1.0–5.0 |
| Titanium Alloy (Ti-6Al-4V) | 30–60 | 0.05–0.12 | 0.5–2.0 |
| Brass / Copper | 150–300 | 0.10–0.25 | 1.0–4.0 |
Note: Values are starting recommendations. Optimize based on machine rigidity, workpiece condition, and coolant application. Dry machining recommended for cast iron and aluminum.
Operating Guidelines
Follow these best practices to maximize insert life and machining safety:
- Insert Inspection: Verify cutting edge integrity before mounting. Do not use chipped or cracked inserts.
- Torque Specification: Tighten clamping screw to 2.5–3.0 N·m; over-torque causes insert fracture.
- Coolant: Flood coolant recommended for titanium and aluminum; dry cutting acceptable for cast iron.
- Depth Limit: Do not exceed maximum groove depth specified for holder geometry.
- Edge Life: Monitor flank wear (VB max 0.3 mm). Replace insert when wear land reaches limit.
- Storage: Store in original packaging away from corrosive environments.
Toolholder Compatibility
The GVFL300B is designed for use with Kyocera GFV-series toolholders. Select the holder based on insert size and machining configuration:
- Compatible Holder Series: GFV (Face Grooving) / GVF (General Grooving)
- Holder Size Match: Size 300 insert requires size 300 holder shank
- Hand Configuration: Right-Hand toolholder required (right-hand cutting direction)
- Clamping System: Top-clamp or lever-lock depending on holder model
- Coolant Supply: Internal coolant channels recommended for deep grooving
For optimal performance, verify holder pocket geometry and ensure proper insert seating before operation. Use genuine Kyocera toolholders to maintain precision and safety standards.
Packaging & Ordering Information
- Standard Packaging: Individual plastic insert box, 10 inserts per pack
- MPN: TWE02175
- Minimum Order Quantity: 1 pack (10 inserts)
- Lead Time: In-stock items ship within 1–2 business days
- Storage: Keep in original packaging at room temperature, avoid humidity
- Traceability: Each batch marked with production lot number for quality tracking
Catalog Meta Data
| Catalog Series | GFV / GVF Grooving System |
| Page Reference | Grooving Inserts – Face Grooving Section |
| Revision Date | 2026 Edition |
| ISO Standard | ISO 1832:2012 |
| Quality Certification | ISO 9001:2015, JIS B 4104 |
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