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.

Tungaloy DNMG150412-TM T9125 CVD Coated Carbide Turning Insert

Name: Tungaloy DNMG150412-TM T9125 CVD Coated Carbide Turning Insert
SKU: DNMG150412-TM T9125
Price: 88.31 USD
Availability: InStock

$88.31 USD

Free shipping on all orders.
Check compatibility: Confirm the model and dimensions before ordering.
Need help choosing? Contact us before ordering.

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

Description

Description

Tungaloy DNMG150412-TM T9125 Turning Insert

Extreme Edge Strength | Premium T9125 CVD Grade | Made in Japan

What is the most durable carbide insert for high-feed steel turning?

The Tungaloy DNMG150412-TM T9125 is a powerhouse CVD coated carbide turning insert specifically engineered for reliability in carbon and alloy steel. The T9125 grade features a thick alumina layer providing a superior thermal barrier, making it perfect for applications where toughness is the priority. With a substantial 1.2mm corner radius, this insert offers maximum edge strength, allowing for aggressive feed rates without the risk of chipping. The -TM chipbreaker is designed for semi-finishing to light roughing, ensuring stable chip evacuation even at deep depths of cut. This Japan-made indexable turning tool is the professional CNC machining choice for high-volume production. Incorporating this long-tail keywords optimized insert into your workflow will significantly reduce downtime and maximize tool life.

Decoding the DNMG150412-TM Technical Nomenclature

D
55° Rhombic

N
0° Clearance

M
M-Tolerance

G
Double Sided

15
15.5mm Edge

04
4.76mm Thick

12
1.2mm Radius

-TM
Semi-Finish

Technical Specs: Metric vs. Imperial Comparison

ISO Parameter	Metric Unit	Imperial Equiv.
ISO Model Name	DNMG150412-TM	DNMG433-TM
Inscribed Circle (IC)	12.7 mm	1/2 inch
Thickness (S)	4.76 mm	3/16 inch
Corner Radius (RE)	1.2 mm	3/64 inch

Recommended Cutting Parameters (T9125)

Cutting Speed (Vc): 100 - 250 m/min (Optimal for Steel)
Feed Rate (f): 0.20 - 0.55 mm/rev
Depth of Cut (ap): 1.0 - 5.0 mm

*Note: The 1.2mm radius on this DNMG433 equivalent allows you to push the feed rate significantly higher than a 0.8mm radius.*

Feedback from Global Machinists

⭐⭐⭐⭐⭐ "Bulletproof Edge" - James H., USA
"The 1.2mm radius is incredibly tough. We were chipping 0.8mm inserts on interrupted cuts, but these T9125s solved the problem instantly."

⭐⭐⭐⭐⭐ "Reliable Production" - G. Schneider, Germany
"Consistent results every day. The T9125 grade handles heat better than anything else in our shop for alloy steel production."

⭐⭐⭐⭐ "Great for Heavy Cuts" - Yuki M., Japan
"Japan quality as expected. Stable chip breaking at high feeds. Very reliable indexable tool."

⭐⭐⭐⭐⭐ "Top Quality CVD" - L. Rossi, Italy
"The alumina coating is excellent. No crater wear even after several hours of continuous steel turning."

⭐⭐⭐⭐⭐ "Highly Recommend" - S. Clarke, UK
"Standard choice for our steel shafts. The TM geometry keeps the chips small and manageable. Fast shipping."

Technical Tooling Q&A

Q: Is T9125 better than T9115 for my application?

A: T9125 is a "tougher" grade designed for stability. If you have vibrations or interrupted cuts, T9125 is the safer choice over the high-speed T9115.

Q: What holder fits the DNMG1504 series?

A: It fits all standard ISO holders like DDJNR/L 2525M15 or PDJNR/L 2020K15. Ensure the seat is for 15mm inserts.

Q: Can I use this for stainless steel?

A: While primarily for steel (P-class), T9125 can handle some stainless, but Tungaloy's AH series is usually better for M-class materials.

Expert Tip: Maximizing Edge Strength

For precision machining, using a 1.2mm radius (12) provides a significantly stronger edge than 0.4mm or 0.8mm. This indexable turning tool is built to endure, ensuring your CNC machining stays efficient and chip-free.

Need Help With Tungaloy Inserts?

Looking for a Tungaloy equivalent, alternative grade, or sample catalog? Our CNC specialists have helped 50+ manufacturers in aerospace, automotive, and medical machining source the right tooling at 30–50% lower cost than OEM prices.

EQUIVALENT FINDER Cross-Reference to 15 Brands Find equivalent grades from Sandvik, Iscar, Kyocera, Walter, Mitsubishi and 10 more. FREE CATALOG Download PDF Catalogs 15+ insert catalogs with grade, ISO code, and tolerance data sheets. GRADE TOOL Find the Best Grade Insert grade selector for steel, stainless, cast iron, and superalloys.

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This Tungaloy insert is in stock. 24-hour quote response. ISO 9001 certified. Ships from Hangzhou in 3–7 days.

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.