VNGA Negative Turning Insert 35° Diamond

VNGA Negative Turning Insert 35° Diamond

Superior Profile Accuracy with Negative Rake Strength

Achieve exceptional profile accuracy and surface finish with our TURNING – NEGATIVE VNGA inserts. The 35° diamond geometry combined with negative rake design provides the perfect solution for precision profiling, copy turning, and finishing operations on challenging materials.

VNGA Design Excellence

💎 35° Diamond Configuration

Excellent accessibility for profiling

Reduced cutting forces in finishing

Superior surface finish capability

Ideal for intricate contours

🔧 Negative Rake Advantages

Maximum cutting edge strength

Superior performance in hard materials

Excellent dimensional stability

Extended tool life

Technical Specifications

 

Parameter	Specification
Insert Type	VNGA (35° Diamond Negative)
Clearance Angle	0°
Included Angle	35°
Tolerance Class	G (±0.001")
Coating	Advanced CVD
Substrate	Sub-micron carbide
Edge Preparation	0.002" hone

Comprehensive VNGA Range

 

Model	IC Size	Thickness	Corner Radius	Grade
VNGA 160404	9.525mm	4.76mm	0.4mm	VP15TF
VNGA 160408	9.525mm	4.76mm	0.8mm	VP15TF
VNGA 160412	9.525mm	4.76mm	1.2mm	VP15TF
VNGA 220404	12.7mm	4.76mm	0.4mm	VP20TF
VNGA 220408	12.7mm	4.76mm	0.8mm	VP20TF
VNGA 220412	12.7mm	4.76mm	1.2mm	VP20TF

Advanced Grade Technology

🛡️ VP Series Grades

VP15TF: PVD multi-layer coating for steel/stainless

VP20TF: Enhanced toughness for difficult materials

VP30TF: High wear resistance for cast iron

Coating Properties:

Hardness: 3000 HV

Oxidation temperature: 1100°C

Friction coefficient: 0.35

Coating thickness: 3-5 μm

Application Specialization

🎯 Profile Machining

Aerospace blade profiles

Automotive camshafts

Hydraulic valve spools

Turbine components

🔧 Precision Finishing

Medical implants

Precision shafts

Mold components

Die sections

⚙️ Copy Turning

Complex contours

3D surfaces

Transition radii

Angular features

Optimized Parameters

 

Material	Speed (SFM)	Feed (IPR)	DOC (inch)
Carbon Steel	500-800	0.003-0.010	0.010-0.040
Alloy Steel	400-650	0.002-0.008	0.008-0.035
Stainless	300-500	0.002-0.007	0.006-0.030
Cast Iron	350-600	0.004-0.012	0.015-0.050
Titanium	200-350	0.001-0.005	0.005-0.020

Specialized Features

🎯 Precision Ground Edges

Tight radius tolerance ±0.0002"

Consistent edge preparation

Mirror finish on rake face

Burr-free cutting edges

⚡ Chip Control Technology

Optimized chipbreaker geometry

Controlled chip flow direction

Reduced chip packing

Improved surface finish

Setup Optimization

🔧 Recommended Holders

PVJNR/L series for external

PVTNR/L for facing

MVJNR/L for copy turning

Minimum 5° lead angle

📐 Geometric Considerations

91° entering angle

0° rake angle in holder

6° clearance minimum

Rigid setup essential

Performance Benefits

✅ Profile Accuracy: ±0.002" consistency

✅ Surface Finish: Ra 0.1-0.4 μm achievable

✅ Tool Life: 35% longer than positive inserts

✅ Versatility: Effective on all materials

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🎯 Complex profiles require precision tools. Our VNGA inserts deliver excellence!

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