Kyocera GBA43L300-150R KW10 TWE06645 Grooving Insert

Product Overview

Engineered for high-precision external grooving & parting-off, the Kyocera GBA43L300-150R combines KW10 uncoated carbide substrate with optimized cutting geometry. This indexable insert minimizes cutting forces while maximizing chip control for consistent, repeatable results across high-volume production runs.

ISO Designation Breakdown

The ISO designation GBA43L300-150R encodes critical geometric and functional parameters:

• Series Prefix: GBA — GBA series grooving insert family
• Width Code: Defines the nominal cutter width (3.0 mm / 0.118")
• Detail Code: Specifies corner radius (1.5 mm / 0.059") and chipbreaker variant
• Hand Designation: Left-Hand orientation for external grooving & parting-off operations
• Grade Suffix: KW10 — Uncoated Fine-Grain Carbide (K10 equivalent)

Engineering Dimensions & Geometry

Engineering Dimensions & Geometry
Parameter	Metric	Imperial
Cutter Width	3.0 mm	0.118"
Insert Thickness	4.76 mm	3/16"
Corner Radius	1.5 mm	0.059"
Number of Cutting Edges	2 (indexable)
Hand Orientation	Left-Hand
Insert Shape	Rectangular with R/L Hand Orientation

Grade Details — KW10 Key Characteristics

The KW10 grade is an uncoated fine-grain carbide classified under ISO K10. It is specifically formulated for machining materials where built-up edge resistance and surface finish quality are critical success factors.

• Exceptional wear resistance in abrasive materials
• Superior edge sharpness for mirror-finish machining
• High thermal stability for dry cutting applications
• Low coefficient of friction reduces built-up edge
• Optimal balance of hardness and toughness

KW10 Grade Technical Properties
Carbide Classification	Uncoated Fine-Grain Carbide
ISO Application Group	K10
Hardness	HRA 91.5
Density	14.8 g/cm³
Transverse Rupture Strength	≥ 2,500 MPa
Grain Size	Ultra-fine (0.5–0.8 µm)
Cobalt Binder Content	6% Co
Visual Color	Grey

Grade Comparison Matrix

Selecting the correct grade ensures optimal performance and cost efficiency. The matrix below positions KW10 relative to alternative Kyocera grades:

Grade Comparison Matrix
Grade	Coating	ISO Class	Hardness	Primary Application	Surface Finish
KW10	Uncoated	K10	91.5 HRA	Cast iron, Al, Ti, non-metals	Mirror
PR1225	PVD TiAlN	P15-P30	92.0 HRA	Steel, stainless steel	Excellent
CA5535	CVD Al₂O₃+TiCN	P30-P40	91.0 HRA	Heavy steel, cast iron	Good
PR1535	PVD TiAlN	M15-M30	91.8 HRA	Stainless steel, high-temp alloys	Very Good

Recommendation: KW10 is the optimal choice when machining Cast iron, non-ferrous metals, non-metals, titanium alloys and achieving a mirror-grade surface finish is the primary objective.

Chipbreaker Profile — R-Type

The R-Type chipbreaker profile on the GBA43L300-150R is engineered for General grooving, parting-off, steel and cast iron:

• Chipbreaker Geometry: Radius edge with neutral rake
• Rake Angle: 6°
• Optimal Use Case: General grooving, parting-off, steel and cast iron
• Chip Control: Narrow, curled chips for safe evacuation from the groove

Standard radius edge design for general external grooving with smooth chip evacuation.

Recommended Applications & Workpiece Materials

The GBA43L300-150R with KW10 grade is specifically recommended for the following workpiece materials and operations:

• Cast Iron (Gray & Ductile): Excellent abrasion resistance; stable cutting at medium to high speeds
• Aluminum & Aluminum Alloys: Mirror-finish capability; minimal built-up edge tendency
• Copper & Brass: Superior edge sharpness prevents material adhesion
• Titanium & Titanium Alloys: Low thermal conductivity management through sharp edge geometry
• Plastics & Composites: Clean shearing action without delamination
• Non-Metallic Materials: Ceramic, graphite, and engineered polymers

Not Recommended For: Hardened steels (>45 HRC), stainless steels requiring coated grades, or high-temperature nickel alloys.

Application Map by Operation

Application Map by Operation
Operation	Suitability	Feed Range	Depth of Cut
External Grooving & Parting-Off	★★★★★ Primary	0.03–0.20 mm/rev	Up to 3.0 mm
Face Grooving	★★★★☆ Excellent	0.05–0.15 mm/rev	Up to 2.0 mm
Parting-Off	★★★☆☆ Conditional	0.05–0.12 mm/rev	Up to 3.0 mm
Profiling / Contouring	★★★☆☆ Conditional	0.03–0.10 mm/rev	Up to 1.0 mm
Turning (General)	★☆☆☆☆ Not Recommended	—	—

Recommended Cutting Conditions

The following cutting parameters are recommended starting points. Adjust based on machine rigidity, workpiece condition, and coolant application:

Recommended Cutting Conditions (Starting Values)
Workpiece Material	Cutting Speed Vc (m/min)	Feed f (mm/rev)	Depth of Cut ap (mm)
Cast Iron	80–150	0.05–0.20	≤ 3.0
Aluminum	200–400	0.05–0.15	≤ 2.0
Titanium	30–60	0.03–0.10	≤ 1.5
Non Ferrous	120–250	0.05–0.18	≤ 2.5
Non Metals	150–300	0.05–0.20	≤ 3.0

Note: For interrupted cuts or less rigid setups, reduce Vc by 20–30% and increase feed gradually. Dry cutting is preferred for KW10 to maximize edge sharpness and avoid thermal shock.

Operating Guidelines

• Tool Overhang: Minimize overhang to reduce vibration. Use the shortest possible toolholder for the application.
• Coolant Strategy: KW10 performs optimally in dry cutting. If coolant is required, use high-pressure, directed flow to prevent thermal shock.
• Insert Seating: Ensure the insert seat is clean and free of debris before clamping. Torque the clamping screw to manufacturer specification (typically 2.5–3.5 N·m).
• Chip Management: Verify chip evacuation path is clear. Compressed air assist is recommended for deep grooving.
• Corner Radius Selection: Use the largest radius compatible with the groove geometry to maximize edge strength and surface finish.
• Feed Rate: Avoid excessively low feeds (<0.03 mm/rev) which can cause rubbing and accelerated wear.
• First Cut: Reduce speed by 30% for the first 50 mm of cutting to allow the edge to "run in".

Toolholder Compatibility

The GBA43L300-150R is designed for use with GBA series external grooving toolholders (e.g., GBA-2020K, GBA-2525M). Compatible with standard ISO external grooving holders featuring 20×20 mm or 25×25 mm shank sections.

• Compatible Holder Series: GBA
• Insert Clamping: Top-clamp or lever-lock depending on holder design
• Shank Sizes: 20×20 mm, 25×25 mm (external); Ø10 mm, Ø12 mm, Ø16 mm (internal)
• Approach Angle: 90° for straight grooving; 93° for face grooving

Packaging & Ordering Information

Packaging & Ordering Information
Minimum Order Quantity	1 piece (individually packaged)
Standard Packaging	Plastic insert box with foam insert protection
Bulk Packaging	Available in quantities of 10, 50, and 100 pieces
Manufacturer Part Number	TWE06645
ISO Designation	GBA43L300-150R
Country of Origin	Japan
Warranty	Full manufacturer warranty against material and manufacturing defects

Catalog Meta Data

Catalog Meta Data
Product Family	Kyocera Indexable Grooving Inserts
Series	GBA
Style	GE
Size Code	N/A
Grade	KW10
Coating	Uncoated
Material	Carbide
Chipbreaker	R
Hand	Left-Hand
Cutting Edges	2
Weight (Single Insert)	0.011 kg

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