DESCRIPTION

Product Overview

The MMT22ER-N60 CD7225 is a high-precision, indexable 60-degree partial profile external threading insert engineered for versatile thread turning across a wide pitch range. Featuring a 22mm ISO insert size and a right-hand cutting direction, this insert is paired with the shock-resistant CD7225 PVD-coated grade matrix. It delivers sharp cutting edges, low cutting resistance, and exceptional thermal stability, making it an ideal choice for high-accuracy external threading operations on ISO P (Steels) and ISO M (Stainless Steels).

2. Technical Specifications

• ISO Model: MMT22ER-N60 (Equivalent to 22ERN60 / 22ER N60)

• Grade: CD7225 (Advanced PVD multi-layer nano-coated carbide grade optimized for high edge toughness, wear resistance, and smooth chip evacuation)

• Cutting Direction: Right-Hand (R)

• Thread Type: External Threading (ER)

• Thread Angle: 60 Degree Partial Profile (Universal 60° thread angle covering coarse to fine pitches)

• Insert Size: 22 mm (Inscribed Circle 1/2 inch)

• Machining Type: CNC lathe external threading, heavy bolt threading, pipe couplings, and shaft lead screws.

CNC Inserts - Frequently Asked Questions

1. How do I choose the right grade for my specific machining application?

Choosing the correct grade is crucial for tool life and performance. We provide a comprehensive Grade Cross-Reference Chart that maps our CD Carbide grades to major international brands like Sandvik, Mitsubishi, and Kyocera. If you are unsure, simply provide us with the workpiece material (P, M, K, S, H) and machining conditions, and our engineers will recommend the best solution.

2. Can you provide customized CNC tools based on our drawings?

Yes. As a factory-direct manufacturer, we specialize in bespoke engineering. Whether you need non-standard dimensions, specific chipbreakers, or customized coatings for unique alloys, our technical team can develop products based on your technical drawings (PDF/STEP) or physical samples.

3. Do you offer free samples for testing before bulk orders?

We understand that "trial cutting" is the only way to verify tool stability. We offer sample packs for professional buyers to test performance on their own CNC machines. Please contact our sales team with your machine specifications and the material you are processing to request your trial samples.

4. How do you ensure the quality consistency of your carbide inserts?

Our quality control is integrated into every step of the production process in Zhuzhou. We use high-purity tungsten carbide powder and advanced PVD/CVD coating equipment. Each batch undergoes rigorous inspection, including microscopic edge analysis and hardness testing, to ensure that the performance of the 1,000th insert is identical to the 1st.

5. What is the typical lead time for international B2B orders?

For standard models in stock (such as WNMG, CNMG, etc.), we usually ship within 3-5 business days. For customized tools or large-volume OEM orders, the production cycle typically ranges from 2 to 4 weeks, depending on the complexity of the design and coating requirements.

6. Are you a manufacturer or a trading company?

We are a direct manufacturing enterprise based in Zhuzhou, the hunan of China’s tungsten carbide industry. By cutting out the middleman, we provide factory-direct pricing and faster technical support. This allows us to offer more flexible MOQs (Minimum Order Quantities) for small-to-medium-sized distributors and specialized machine shops.