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Kyocera VNMG160408R-VC CA525 TAC07665 Medium to Rough Turning - Steel

Kyocera VNMG160408R-VC CA525 TAC07665 Medium to Rough Turning - Steel
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Kyocera VNMG160408R-VC CA525 TAC07665 Medium to Rough Turning - Steel
$4.41 USD
$7.35 USD
1 or more $4.41 USD
  • Stock: In Stock
  • Model: CA525
  • Weight: 0.10kg
  • Manufactured: In Japan
  • Ships: Worldwide
  • Item Code: TAC07665
This product has a minimum quantity of 10
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Product Overview

The VNMG160408R-VC CA525 TAC07665 is a premium-grade indexable carbide turning insert manufactured by Kyocera in Japan. Designed for Medium to Rough Turning, this 35° rhombic insert combines a robust 15.875 mm substrate with the advanced CA525 PVD coating to deliver exceptional tool life, dimensional stability, and surface finish quality across a wide spectrum of steel machining applications.

With a precisely ground 0.8 mm nose radius and positive rake geometry, the VC chipbreaker ensures efficient chip evacuation, reduced cutting forces, and minimal built-up edge formation. Whether deployed in high-volume production environments or precision prototyping workshops, this insert offers the reliability and consistency that CNC machinists demand.

ISO Designation Breakdown

The ISO 1832 standard designation for this insert is decoded as follows:

PositionCodeParameterSpecification
1VInsert Shape35° Rhombic
2NClearance Angle0° (Negative Insert)
3MTolerance ClassM-Class (±0.05mm IC, ±0.08mm Thickness)
4GHole / ChipbreakerG Type with Central Hole
5-616Inscribed Circle (IC)15.875 mm
7-804Insert Thickness (S)4.76 mm
9-1008Nose Radius (RE)0.8 mm
11+VCChipbreaker DesignVersatile Chipbreaker

Engineering Dimensions & Geometry

All dimensions conform to ISO 1832:2017 tolerances for M-class inserts:

DimensionValueToleranceNotes
Inscribed Circle Diameter (IC)15.875 mm±0.05 mmPer ISO 1832
Insert Thickness (S)4.76 mm±0.08 mmM-Class Tolerance
Nose Radius (RE)0.8 mm±0.05 mmCorner Radius for Surface Finish
Clearance AngleNegative Insert, Requires Negative Toolholder
Included Angle35°35° Rhombic
Center Hole DiameterStandardCompatible with Standard Clamping Systems

Grade Details — Key Grade Characteristics

CA525 is a premium PVD-coated carbide grade engineered specifically for steel machining applications. The grade combines a high-performance TiAlN-based multilayer coating with a tough submicron carbide substrate to deliver exceptional wear resistance and edge stability.

PropertySpecification
Coating TypePVD (Physical Vapor Deposition) TiAlN Multilayer
SubstrateSubmicron Tungsten Carbide (WC-Co)
ISO Application RangeP15 – P35 (Steel Machining)
Hardness (HV)1,650 HV
Transverse Rupture Strength3,200 MPa
Thermal StabilityUp to 900°C Oxidation Resistance
Coating ColorBronze-Gold
Recommended Cutting Speed (Vc)150 – 350 m/min (Steel)

Grade Comparison Matrix

Select the optimal grade for your specific machining environment:

GradeCoatingISO RangeBest ForSpeed
CA525PVD TiAlNP15 – P35General Steel, Continuous to Light InterruptedMedium-High
CA530PVD TiAlNP20 – P40Heavier Interrupted Cuts, Tougher ConditionsMedium
CA515PVD TiAlNP10 – P25High-Speed Finishing, Stable ConditionsHigh
CA310CVD TiC-TiN-Al₂O₃P30 – P50Roughing, Heavy Interruption, Low SpeedsLow-Medium

Chipbreaker Profile

The VC chipbreaker geometry is optimized for medium to rough turning. It features a precisely engineered rake face and chip groove design that promotes effective chip curling and controlled breakage, preventing chip entanglement and ensuring smooth machining operations.

ParameterVC Specification
Rake AnglePositive
Chip Groove WidthOptimized for Medium to Rough Turning
Edge PreparationGood Quality Edge Honing
Primary ApplicationMedium to Rough Turning
Surface Finish CapabilityGood

Recommended Applications & Workpiece Materials

The following cutting parameters serve as starting recommendations. Adjust based on machine rigidity, workpiece condition, and desired surface finish:

Workpiece MaterialConditionCutting Speed (m/min)Feed (mm/rev)Depth of Cut (mm)
Carbon Steel (C45, C50)Normalized220 – 2800.15 – 0.400.5 – 4.0
Alloy Steel (4140, 4340)Quenched & Tempered180 – 2500.12 – 0.350.5 – 3.5
Stainless Steel (304, 316)Annealed120 – 1800.10 – 0.300.3 – 3.0
Tool Steel (H13, D2)Pre-Hardened100 – 1500.08 – 0.250.3 – 2.5
Cast Iron (GG25, GGG40)As-Cast150 – 2000.12 – 0.300.5 – 3.0

Application Map by Operation

Operational suitability matrix for the VNMG160408R-VC insert:

OperationSuitabilityRecommended Depth (mm)Expected Finish
External Turning★★★★★ Excellent0.5 – 4.0Ra 0.8 – 3.2 μm
Internal Turning (Boring)★★★★☆ Very Good0.3 – 2.5Ra 0.8 – 3.2 μm
Facing★★★★★ Excellent0.5 – 3.0Ra 0.8 – 3.2 μm
Profiling / Contouring★★★★☆ Very Good0.3 – 2.0Ra 0.4 – 1.6 μm
Grooving / Parting★★☆☆☆ LimitedNot Recommended
Threading★☆☆☆☆ Not SuitableUse Dedicated Threading Inserts

Recommended Cutting Conditions

Optimized starting parameters for VC chipbreaker geometry:

MaterialVc (m/min)fn (mm/rev)ap (mm)Coolant
Low-Carbon Steel200 – 2800.15 – 0.401.0 – 5.0Wet / Dry
Medium-Carbon Steel180 – 2500.12 – 0.351.0 – 4.5Wet Recommended
Alloy Steel150 – 2200.12 – 0.300.8 – 3.5Wet Recommended
Cast Iron130 – 1900.15 – 0.351.0 – 4.0Dry / Air Blast

Operating Guidelines

  • Toolholder Selection: Use negative-rake toolholders with matching insert shape (e.g., MVJNR for VNMG, MWLNR for WNMG/WBMT). Ensure proper seat contact and clamping force.
  • Insert Mounting: Clean the toolholder pocket and insert seat thoroughly before mounting. Torque the clamping screw to manufacturer specifications (typically 3.5 – 5.0 N·m).
  • Cutting Edge Inspection: Visually inspect the cutting edge before each use. Do not use inserts with visible chipping, cracks, or excessive flank wear (>0.3 mm).
  • Coolant Application: For steel machining, flood coolant is recommended at 8–12% concentration. Ensure coolant reaches the cutting zone directly.
  • Speed & Feed Ramp-Up: Start at the lower end of recommended cutting parameters and gradually increase to optimal levels based on chip formation and surface finish.
  • Chip Control: Monitor chip color and shape. Silver-blue chips indicate optimal temperature; dark blue or purple chips suggest excessive heat—reduce speed or increase feed.
  • Workpiece Rigidity: Ensure adequate workpiece support, especially for internal turning and long overhangs. Minimize vibration to prevent edge chipping.
  • Storage: Store inserts in original packaging away from direct sunlight and moisture. Avoid contact between inserts to prevent edge damage.

Toolholder Compatibility

Compatible toolholder series for the VNMG160408R-VC insert:

Toolholder SeriesStyleApproach AngleApplication
MVJNR / MVJNLExternal Turning93°General External Turning, Facing
SVJBR / SVJBLExternal Turning93°Profiling, Copy Turning
DVJNR / DVJNLExternal Turning93°Heavy-Duty External Turning
S16Q-MVJNR16Internal Boring93°Boring Bars for Internal Turning

Packaging & Ordering Information

ParameterDetails
Standard Pack Quantity10 Inserts per Box
Packaging TypeKyocera Original Plastic Box with Foam Insert
Label InformationISO Code, Grade, MPN, Batch Number, Manufacturing Date
Minimum Order Quantity1 Box (10 Inserts)
Bulk PricingAvailable for quantities ≥50 boxes. Contact sales for quotation.
WarrantyFull Manufacturer Warranty Against Material and Manufacturing Defects
MPN (Manufacturer Part Number)TAC07665
Country of ManufactureJapan

Catalog Meta Data

AttributeValue
Product LineKyocera Precision Tools — Turning Inserts
SeriesCA525 PVD-Coated Steel Grade
Insert Family35° Rhombic Negative Insert
Chipbreaker FamilyVC — Versatile Chipbreaker
ISO StandardISO 1832:2017
Industry ApplicationsAutomotive, Aerospace, General Engineering, Energy, Medical Devices
Compatible MachinesCNC Lathes, Turning Centers, Multi-Tasking Machines, Swiss-Type Lathes
Replacement ForCompatible with all ISO-standard 35° Rhombic toolholders

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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.

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