Tungaloy JTGR3225F J740 PVD Coated External Grooving Insert

$200.17 USD

Price shown is a starting point. Contact us for a precise quote based on your requirements.

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Description

Tungaloy JTGR3225F J740 Grooving Insert

High-Precision 2.25mm External Grooving | PVD J740 Carbide | Made in Japan

What is the best 2.25mm insert for narrow grooving in titanium?

The Tungaloy JTGR3225F J740 is a high-performance indexable grooving tool designed for ultra-accurate external grooving. Built with the premium J740 PVD coated carbide grade, this insert is specifically optimized for machining difficult-to-cut materials like 304/316 stainless steel, heat-resistant superalloys, and titanium. The 2.25mm cutting width (CW) combined with the F-type chipbreaker ensures high edge sharpness and excellent chip control, which is essential for preventing built-up edge (BUE) in precision CNC machining. As an authentic Japan-made grooving insert, it provides the reliability needed for maintaining tight tolerances and a superior surface finish Ra.

Decoding the JTGR3225F Technical Nomenclature

J
Mounting
T
External
G
Grooving
R
Right Hand
3225
2.25mm Width
F
Flat/Fine
J740
PVD Grade

Technical Specs: Metric vs. Imperial Units

ISO Parameter Metric Unit Imperial Designation
Cutting Width (CW) 2.25 mm 0.0886 inch
Corner Radius (RE) 0.20 mm 0.0078 inch
Model Number JTGR3225F JTGR 3.089F
Seat Size 3 Series 3

Recommended Cutting Parameters (J740 Grade)

  • Cutting Speed (Vc): 40 - 140 m/min (Highly dependent on workpiece material)
  • Feed Rate (f): 0.03 - 0.12 mm/rev (Optimize for 2.25mm stability)
  • Coolant: High-pressure flood coolant is highly recommended.

*Pro Tip: For 2.25mm precision grooving, verify tool center height exactly to prevent rubbing and ensure superior surface Ra. J740 provides high toughness for interrupted grooving cycles.*

Global Verified Customer Reviews

⭐⭐⭐⭐⭐ "Predictable and Tough" - Matthias S., Germany
"The JTGR3225F J740 is our standard for 2.25mm grooves in aerospace components. Very predictable tool life even in Inconel."

⭐⭐⭐⭐⭐ "No Smearing on 316L" - Alessandro B., Italy
"Handles stainless steel beautifully. The F-breaker keeps the cut clean and the surface finish is excellent."

⭐⭐⭐⭐ "Great for Swiss Lathes" - Kevin M., USA
"The precision of these Tungaloy inserts is unmatched. We use them for small medical parts with high success rates."

⭐⭐⭐⭐⭐ "Genuine Quality" - S. Tanaka, Japan
"Very stable performance. J740 grade is perfect for balancing hardness and toughness in CNC production."

⭐⭐⭐⭐⭐ "Highly Recommended" - James P., UK
"Fast shipping and authentic parts. The 2.25mm width is exactly what we needed for specific hydraulic grooves."

Technical Tooling Q&A

Q: Is JTGR3225F suitable for high-speed parting?

A: This is specifically an external grooving insert. While it can perform light parting-off on small diameters, its flat geometry (F) is best optimized for precision 2.25mm grooves.

Q: Which tool holder do I need for this 2.25mm insert?

A: It is designed for Tungaloy J-Series external holders, such as the JCTEL/R series. Always match the seat size for Series 3 inserts.

Q: Why choose J740 over CVD grades for grooving?

A: J740 (PVD) provides a sharper cutting edge and higher toughness, which is critical for narrow grooving where vibration is more likely than in heavy CVD turning.

Expert Insight: PVD vs. CVD in Precision Grooving

In precision machining, J740 represents the peak of edge toughness. While CVD coatings are optimized for high-volume steel roughing, J740 provides the sharp stability needed for the narrow slotting cycles of CNC grooving. Protect your indexable grooving tool with filtered coolant.

© 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.