Tungaloy JTGR3140F J740 PVD Coated External Grooving Insert

Tungaloy JTGR3140F J740 PVD Coated External Grooving Insert

$200.17 USD

✓ In Stock & Fast Dispatch: Order processing: typically 1–3 business days after confirmation.
✓ Global Shipping: Delivery: generally 5–20 business days, depending on destination and shipping method.
✓ Guaranteed Quality: Check model, dimensions and compatibility before ordering. | Direct Factory Outlet
✓ Technical Support: Need grade selection help? Contact Engineer

💰 Bulk savings 2-9 pcs · 6% OFF | 10+ pcs · 12% OFF

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Description

Tungaloy JTGR3140F J740 Grooving Insert

High-Precision 1.4mm External Grooving | PVD J740 Carbide | Made in Japan

What is the best 1.4mm insert for precision grooving in difficult alloys?

The Tungaloy JTGR3140F J740 is a premier indexable grooving tool specifically engineered for high-accuracy external grooving. Utilizing the high-performance J740 PVD coated carbide grade, this insert excels in machining tough materials like 304/316 stainless steel, titanium, and heat-resistant superalloys. The 1.4mm cutting width (CW) and F-type chipbreaker provide exceptional edge sharpness and chip evacuation, which is critical for preventing built-up edge (BUE) in precision CNC machining. As an authentic Japan-made long-tail keywords optimized insert, it is the industry standard for maintaining tight tolerances and superior surface finish Ra, ensuring consistent tool life in high-demand production cycles.

Decoding the JTGR3140F Technical Nomenclature

J
Mounting
T
External
G
Grooving
R
Right Hand
3140
1.4mm Width
F
Fine/Flat
J740
PVD Grade

Technical Specs: Metric vs. Imperial Units

ISO Parameter Metric Unit Imperial Designation
Cutting Width (CW) 1.40 mm 0.0551 inch
Corner Radius (RE) 0.10 mm 0.0039 inch
Model Number JTGR3140F JTGR 3.055F
Seat Size 3 Series 3

Recommended Cutting Parameters (J740 Grade)

  • Cutting Speed (Vc): 40 - 140 m/min (Depending on material group)
  • Feed Rate (f): 0.02 - 0.09 mm/rev
  • Coolant: High-pressure coolant is highly recommended for 1.4mm narrow slots.

*Pro Tip: For 1.40mm 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

⭐⭐⭐⭐⭐ "Reliable for 1.4mm Slots" - Matthias S., Germany
"The JTGR3140F J740 is our go-to for hydraulic components. Very stable 1.4mm width and excellent tool life on stainless steel."

⭐⭐⭐⭐⭐ "Japan Quality Indeed" - T. Nguyen, Vietnam
"Consistent results every box. These Tungaloy inserts maintain a sharp edge much longer than generic alternatives."

⭐⭐⭐⭐ "Great for Swiss Lathes" - Chris D., USA
"Used on Citizen machines for aerospace fasteners. The 1.4mm groove is clean and the chips are well-managed."

⭐⭐⭐⭐⭐ "Top Grade for Stainless" - Alessandro B., Italy
"J740 grade doesn't smear the material. Perfect for the medical grade 316 we process daily."

⭐⭐⭐⭐⭐ "Genuine & Fast" - A. Clarke, UK
"Always receive authentic Tungaloy parts. Best price-to-performance ratio for precision grooving."

Technical Tooling Q&A

Q: Is JTGR3140F 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 optimized for precision 1.4mm wide grooves.

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

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

Q: Why use J740 over CVD grades?

A: J740 (PVD) provides higher edge sharpness and toughness, making it far superior for vibration-sensitive precision grooving than thicker CVD coatings.

Expert Insight: PVD vs. CVD in 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

How do I choose the correct specification?

When choosing CNC cutting tools, check the full model code, dimensions, grade and selected variant before ordering. Do not rely on the product image alone.

How can I check compatibility with my existing setup?

For carbide inserts, tool holders, drills and end mills, compare the mounting dimensions, connection type and manufacturer's specifications with your holder or machine. If you are unsure, share your existing part number and machining application with us before ordering.

What quantity and price unit am I ordering?

Check the product listing for the selling unit, pack quantity and included components. If it is unclear whether the price is per piece or per pack, or whether a tool body and inserts are sold separately, contact us before purchasing.

How should I choose cutting parameters?

Select cutting speed, feed rate and depth of cut using the relevant manufacturer's recommendations for your tool model, workpiece material, machine conditions and coolant method. The same settings are not suitable for every product or application.

Are bulk discounts available?

Our automatic quantity discount is 6% off for 2–9 items and 12% off for 10 or more items, based on the total product quantity in the cart. Other offers may not combine with this discount; check the applicable offer conditions.

When will my order ship and arrive?

According to our shipping policy, orders are typically processed and shipped within 1–3 business days after confirmation. Delivery generally takes 5–20 business days, depending on your destination and shipping method. Customs clearance or unforeseen delays may affect delivery times. A tracking number is sent by email after shipment.