Kyocera VBMT160408HQ CA510 TAA07461

1. Product Overview

The VBMT160408HQ is a premium-grade 35° Rhombus indexable turning insert manufactured by Kyocera in Japan. Featuring the advanced CA510 CVD-coated carbide substrate, this insert delivers exceptional performance in high-speed steel machining applications. The High Precision chipbreaker geometry (HQ) ensures optimal chip control, reduced cutting forces, and superior surface finish quality.

Engineered for precision CNC turning centers and milling machines, the VBMT160408HQ combines a robust carbide substrate with a multi-layer TiCN+Al₂O₃+TiN coating system. This combination provides outstanding wear resistance, thermal stability, and extended tool life even under demanding continuous-cutting conditions.

2. ISO Designation Breakdown

The model code VBMT160408HQ follows the ISO 1832 standard for indexable inserts. Each position in the code conveys specific geometric and functional information:

3. Engineering Dimensions & Geometry

The following table summarizes the critical dimensional parameters of the VBMT160408HQ insert:

Geometric Notes: The Positive clearance angle minimizes rubbing against the workpiece, reducing heat generation and improving surface integrity. The 0.8mm nose radius provides an optimal balance between edge strength and achievable surface finish (theoretical Rz ≈ f² / 8×rε).

4. Grade Details – Key Grade Characteristics

Grade CA510 is a high-performance CVD-coated carbide grade specifically developed for high-speed and high-efficiency steel machining. Key characteristics include:

• Coating System: Multi-layer TiCN + Al₂O₃ + TiN deposited via CVD technology. The gold-colored top layer provides excellent wear recognition and additional chemical stability.
• Substrate Technology: Special carbide substrate with enhanced thermal deformation resistance and optimized cobalt binder distribution for superior toughness.
• Hardness: 1,470 HV – high hardness ensures excellent crater and flank wear resistance at elevated cutting temperatures.
• Transverse Rupture Strength (TRS): 2,500 MPa – provides reliable performance under continuous to light interrupted cutting conditions.
• Thermal Stability: Stable performance up to 1,000°C cutting interface temperature, enabling higher cutting speeds without premature tool degradation.
• Chip Control: Optimized for medium to long-chipping materials such as plain carbon steel, alloy steel, and ductile cast iron.

5. Grade Comparison Matrix

Select the optimal grade for your application by comparing CA510 with other popular Kyocera CVD-coated grades:

6. Chipbreaker Profile

HQ – High Precision Chipbreaker

High Precision – sharp cutting edge optimized for finishing operations. Low cutting forces, minimal burr formation.

Key Chipbreaker Features:

• Rake angle optimized for heavy roughing operations
• Chip groove geometry promotes controlled curl and breakage
• Reinforced cutting edge land for improved edge integrity
• Polished surface finish on rake face reduces built-up edge (BUE) formation
• Compatible with standard coolant delivery systems

7. Recommended Applications & Workpiece Materials

The VBMT160408HQ CA510 is ideally suited for the following materials and conditions:

• Carbon Steels: AISI 1010–1055 (continuous to light interrupted)
• Alloy Steels: AISI 4130, 4140, 4340 (normalized or quenched & tempered)
• Tool Steels: AISI H13, D2, O1 (pre-hardened up to 45 HRC)
• Stainless Steels: AISI 304, 316 (austenitic grades, continuous cutting)
• Cast Irons: GGG40–GGG70 (ductile iron, continuous machining)

8. Application Map by Operation

Understand where this insert excels across common turning operations:

9. Recommended Cutting Conditions

Start with these parameters and optimize based on your machine rigidity and workpiece setup:

General Parameter Guidelines:

10. Operating Guidelines

• Tool Overhang: Minimize tool overhang to improve rigidity and reduce vibration. Keep L/D ratio ≤ 4 for steel bars, ≤ 5.5 for carbide bars.
• Coolant Delivery: Direct high-pressure coolant to the cutting zone. Target pressure ≥ 5 bar for effective chip evacuation and temperature control.
• Insert Seating: Ensure the insert seat is clean and free of chips before clamping. Use a torque-calibrated screwdriver for consistent clamping force.
• Edge Preparation: Do not re-sharpen or hone the coated edge. Use inserts directly from the package for optimal coating integrity.
• Tool Life Monitoring: Monitor flank wear (VB) regularly. Replace insert when VB reaches 0.3 mm or when surface finish degrades noticeably.
• Storage: Store inserts in original packaging in a dry environment (humidity < 60%). Avoid direct contact between inserts to prevent edge chipping.

11. Toolholder Compatibility

The VBMT160408HQ is compatible with standard ISO toolholders designed for 35° Rhombus inserts of size 16. Recommended toolholder series include:

Important: Always verify toolholder clamping mechanism (lever lock, screw clamp, or top clamp) matches the insert hole pattern and thickness.

12. Packaging & Ordering Information

Price per Insert: $8.3 (USD) – subject to quantity discounts and currency fluctuations.

13. Catalog Meta Data

Why Buy from Kyotow.com? We supply 100% genuine Kyocera industrial cutting tools with full manufacturer warranty. Every insert is sourced directly from authorized distribution channels. Benefit from expert CNC tooling application support, competitive pricing, and reliable delivery. Bulk and institutional orders are welcome.