Tungaloy JTGR3300F J740 PVD Coated External Grooving Insert

$200.17 USD

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Description

Tungaloy JTGR3300F J740 Grooving Insert

High-Precision 3.0mm External Grooving | PVD J740 Carbide | Made in Japan

What is the best 3.0mm insert for stable grooving in stainless steel?

The Tungaloy JTGR3300F J740 is a versatile indexable grooving tool optimized for standard 3.0mm external grooving applications. Featuring the high-toughness J740 PVD coated carbide grade, this insert is the primary choice for machining 300-series stainless steels, titanium, and cobalt-chrome alloys. The 3.0mm cutting width (CW) coupled with the F-type chipbreaker (Flat geometry) provides superior edge sharpness and vibration resistance. This is critical for preventing built-up edge (BUE) and maintaining dimensional stability in CNC machining. As a genuine Japan-made grooving insert, it ensures high tool life and an exceptional surface finish Ra.

Decoding the JTGR3300F Technical Nomenclature

J
Mounting
T
External
G
Grooving
R
Right Hand
3300
3.0mm Width
F
Flat Geometry
J740
PVD Grade

Technical Specs: Metric vs. Imperial Units

ISO Parameter Metric Unit Imperial Designation
Cutting Width (CW) 3.00 mm 0.1181 inch
Corner Radius (RE) 0.20 mm 0.0078 inch
Model Number JTGR3300F JTGR 3.118F
Seat Size 3 Series 3

Recommended Cutting Parameters (J740 Grade)

  • Cutting Speed (Vc): 45 - 150 m/min (Depending on alloy group)
  • Feed Rate (f): 0.04 - 0.15 mm/rev (Stable for 3.0mm width)
  • Coolant: High-pressure coolant is ideal for deep grooving.

*Pro Tip: Ensure the tool holder shank is as short as possible to maximize rigidity for 3.0mm operations. J740 grade excels in preventing edge chipping.*

Global Verified Customer Reviews

⭐⭐⭐⭐⭐ "Reliable 3.0mm Performance" - Lars M., Germany
"The JTGR3300F is my go-to for standard grooving. The J740 grade holds up incredibly well against heat."

⭐⭐⭐⭐⭐ "Excellent Surface Finish" - Giorgio P., Italy
"Very clean grooves on stainless 304. No vibration even at high speeds. Tungaloy Japan quality is obvious."

⭐⭐⭐⭐ "Great Chip Management" - Robert T., USA
"The F geometry breaks the chips perfectly in our CNC lathes. Reduced our downtime significantly."

⭐⭐⭐⭐⭐ "Long Tool Life" - Nguyen V., Vietnam
"We get 30% more parts per edge compared to our previous brand. J740 is very tough for mass production."

⭐⭐⭐⭐⭐ "Authentic Product" - David S., Australia
"Shipped fast. Genuine Tungaloy. The 3.0mm width is held with high precision across the entire box."

Technical Tooling Q&A

Q: Can I use JTGR3300F for parting-off 20mm bars?

A: It is primarily designed for external grooving. While it can handle light parting, for dedicated high-speed parting, Tungaloy's dedicated parting series is recommended.

Q: Which tool holder is compatible with this insert?

A: Use the JCTEL/R external holder series. Always ensure the seat size matches the Series 3 designation of the insert.

Q: Why choose PVD J740 over CVD grades?

A: PVD coatings like J740 are thinner and sharper, providing higher resistance to edge build-up and chipping during precision grooving compared to thicker CVD coatings.

Expert Insight: Precision Grooving Logic

In precision machining, J740 grade acts as a universal problem-solver for stainless steel. While CVD coatings favor heat resistance in heavy turning, J740 provides the sharp edge stability required for the 3.0mm CNC grooving cycles. Always prioritize rigidity.

© Technical Content by cnchome-beyond.com - Japan Tooling Excellence

Technical FAQ & Buying Guide

Are your carbide inserts interchangeable with major brands like Sandvik, Iscar, or Kennametal?

Absolutely. Our CNC carbide inserts (including CNMG, WNMG, DNMG, and APMT series) are manufactured strictly adhering to international ISO/ANSI specifications. A CNMG 120408 from OYYU BEYOND will flawlessly fit any standard turning tool holder or indexable tool from major global brands like Sandvik Coromant, Kennametal, Iscar, Walter, or SECO, providing a highly cost-effective premium alternative without sacrificing tolerance or tool life.

How do I choose the correct insert grade and chipbreaker for machining Stainless Steel (M) vs. Carbon Steel (P)?

We offer optimized CVD and PVD multi-layer coatings for different ISO material groups:

  • For Carbon/Alloy Steel (ISO P): Choose our thick multi-layer CVD coated grades (e.g., Al2O3 + TiN). They provide exceptional crater wear resistance and thermal barriers during high-speed dry or wet roughing.
  • For Stainless Steel (ISO M): Choose our nano-structured PVD coated grades with sharp, positive chipbreakers (like -TM or -MA). This combination prevents work hardening and effectively controls sticky chips.
What are the recommended cutting speed (Vc) and feed rate (f) parameters to maximize tool life?

The optimal cutting parameters vary depending on the workpiece hardness and operation type:

  • For General Steel Turnings: Recommended cutting speed ($V_c$) ranges from 150 to 280 m/min, with a feed rate ($f$) of 0.15 to 0.45 mm/rev.
  • For Stainless Steel Finishing: Recommended cutting speed ($V_c$) is 120 to 200 m/min, with a feed rate ($f$) of 0.10 to 0.25 mm/rev.Always adjust parameters based on early wear patterns: increase $V_c$ if built-up edge occurs, or reduce $V_c$ if severe flank wear is observed.
Do you offer bulk discounts or wholesale pricing for machine shops and distributors?

Yes, we support machine shops, distributors, and global buyers with tiered wholesale pricing and competitive volume discounts. We also provide OEM custom manufacturing solutions for tool holders and carbide inserts based on your technical drawings. Contact our team to request a quick B2B quotation.

What is your international shipping policy and typical lead time for orders?

We provide secure worldwide express shipping (via DHL, FedEx, and UPS) with specialized, vibration-proof industrial packaging to ensure tools arrive in perfect condition. In-stock items are dispatched within 24-48 hours, while custom or bulk orders typically have a stable lead time of 15-25 days.

How do you guarantee the quality and tolerance precision of your CNC tools?

All our cutting tools and tool holders are manufactured strictly in accordance with ISO 9001 and international industrial standards. Every batch undergoes 100% rigorous quality control testing using high-precision optical measuring equipment to ensure reliable tool life and stable performance in continuous mass production.