Product
MGMN cut groove Insert
China Lizhou Hard Alloy Source Factory
Specification: MGMN
Coating :CVD
Brand number:LMP203
Classification :
Grooving insert
keyword：
lizhou
MGMN150-G & MRMN200-M Carbide Parting and Grooving Inserts – Precision Solutions from Lizhou Carbide
1. Introduction to Lizhou Carbide and Product Line
For over 33 years, Lizhou Carbide has been a trusted manufacturer of high-performance carbide cutting tools. With a global reputation for innovation, quality, and precision, Lizhou specializes in turning inserts, milling cutters, drilling solutions, and parting & grooving systems. Among our advanced portfolio, the MGMN150-G and MRMN200-M carbide inserts stand out as cutting-edge tools designed for parting-off and grooving applications across a wide range of materials, including steels, stainless steels, cast iron, and non-ferrous alloys.
These inserts are engineered to deliver excellent chip control, dimensional accuracy, and tool life optimization, making them indispensable for modern machining environments where productivity and reliability are paramount.
Product Name : Grooving and Slotting Blades MGMN | |
Brand | Liling |
Specifications | MGMN150-G |
Brand Number | LMP203 |
Coating | CVD |
Material | Tungsten Steel |
Characteristics | Steel precision machining and stainless steel semi-precision machining |
Place of Origin | Zhuzhou, Hunan |
2. Understanding the Designation: MGMN150-G & MRMN200-M
The alphanumeric codes are not random; they represent the geometry, dimensions, and intended applications of the inserts:
MGMN150-G
MG – Refers to the insert family for grooving and parting.
MN – Indicates medium cutting width with negative rake design.
150 – Stands for a nominal cutting width of 1.50 mm, ideal for narrow grooves and precise parting.
G – Denotes a ground cutting edge, providing superior sharpness and improved surface finish.
MRMN200-M
MR – Insert family specialized for grooving/parting with enhanced rigidity.
MN – Medium geometry with negative rake for stable cutting.
200 – Corresponds to a nominal cutting width of 2.00 mm, suitable for slightly wider grooves.
M – Stands for medium cutting conditions, balancing cutting forces and tool life.
By understanding the designation, machinists can easily select the right insert for their specific grooving depth, width, and workpiece material.
Product details:
Type | Basic dimensions (mm) | PVD | CVD | ||||||
L | B | t | r | D | LMP203 | LSP203 | LPC203 | LKC203 | |
MGMN150-G | 15 | 1.5 | 3.5 | 0.15 | 1.2 |
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MGMN200-G | 16.1 | 2.0 | 3.5 | 0.20 | 1.6 |
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MGMN250-G | 18.5 | 2.5 | 3.85 | 0.20 | 2.0 |
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MGMN300-G | 21.0 | 3.0 | 4.83 | 0.30 | 2.35 |
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MGMN300-M | 21.0 | 3.0 | 4.83 | 0.40 | 2.35 |
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MGMN400-M | 21.0 | 4.0 | 4.83 | 0.40 | 3.3 |
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MGMN500-M | 26.0 | 5.0 | 5.82 | 0.80 | 4.1 |
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MGMN600-M | 26.0 | 6.0 | 5.82 | 0.80 | 5.0 |
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MGMN150-T | 16.0 | 1.5 | 3.5 | 0.15 | 1.2 |
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MGMN200-T | 16.0 | 2.0 | 3.5 | 0.20 | 1.6 |
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MGMN250-T | 18.5 | 2.5 | 3.85 | 0.20 | 2.0 |
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MGMN300-T | 21.0 | 3.0 | 4.83 | 0.40 | 2.35 |
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MGMN400-T | 21.0 | 4.0 | 4.83 | 0.40 | 3.3 |
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MGMN500-T | 26.0 | 5.0 | 5.82 | 0.80 | 4.1 |
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MGMN600-T | 26.0 | 6.0 | 5.82 | 0.80 | 5.0 |
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3. Performance Advantages of Lizhou Carbide Inserts
High Wear Resistance
Manufactured from premium micro-grain carbide substrate, these inserts resist abrasive wear even under demanding cutting conditions.
Excellent Chip Control
Specially designed chip breakers ensure smooth evacuation of chips, preventing re-cutting, chatter, or tool damage.
Precision Ground Cutting Edges
Both MGMN150-G and MRMN200-M feature sharp, ground edges that reduce cutting forces and improve surface finish.
Stable Machining
Negative rake geometry improves insert strength, ensuring stable machining even in interrupted cuts.
Extended Tool Life
Advanced CVD/PVD coatings provide resistance against heat and chemical wear, extending insert lifespan significantly.
Versatility
Compatible with a wide range of tool holders, enabling efficient use in lathes, CNC machines, and high-speed production systems.
4. Applications and Use Cases
MGMN150-G (1.5mm)
Precision parting-off operations in bar stock.
Narrow grooves in automotive parts, such as piston rings or transmission components.
Ideal for thin-wall machining where cutting width must be minimized to reduce material waste.
MRMN200-M (2.0mm)
General-purpose grooving and parting for shafts, tubes, and bearing seats.
Suitable for medium-duty operations where balance between cutting speed and insert durability is required.
Extensively used in aerospace, oil & gas, and general engineering.
Both inserts are widely applied in:
Automotive industry (shafts, fasteners, gear components)
Aerospace (engine parts, high-strength alloys)
Machinery manufacturing (bearings, valves, precision rings)
General engineering workshops
5. Key Features
Narrow and Accurate Cutting Widths – Reduces material wastage and ensures consistent groove dimensions.
Optimized Chip Breakers – Reliable chip evacuation prevents jamming in high-speed machining.
Coated and Uncoated Options – Adaptable for both dry and wet cutting conditions.
Compatibility – Fits standard tool holders used worldwide (ISO standards).
Reduced Cutting Forces – Designed for energy efficiency and better machine stability.
Surface Finish Excellence – Achieves smooth surfaces, reducing the need for secondary finishing operations.
6. Precautions and Best Practices
Correct Insert Selection – Always match cutting width and geometry to material type and machine conditions.
Tool Holding Rigidity – Ensure toolholders are properly clamped to minimize vibration.
Cutting Parameters – Adjust cutting speed, feed rate, and depth according to material hardness.
Coolant Use – Apply sufficient coolant to prolong tool life and improve chip evacuation.
Indexing – Replace or rotate inserts at the right time to prevent damage to the workpiece.
Avoid Overloading – Exceeding depth limits may cause premature insert breakage.
7. Lizhou Carbide’s Innovation and Commitment
At Lizhou Carbide, innovation is at the core of our product development:
Advanced Powder Metallurgy ensures uniform grain distribution for maximum toughness.
Proprietary Coating Technologies provide superior thermal stability and oxidation resistance.
Custom Solutions – We design inserts based on client-specific applications, offering tailored geometries and coatings.
Quality Certifications – Products comply with ISO standards for carbide tooling, guaranteeing consistency and reliability.
Our R&D team continually develops new cutting geometries to meet the challenges of high-speed machining, exotic materials, and precision manufacturing.
Conclusion
The MGMN150-G and MRMN200-M carbide parting & grooving inserts from Lizhou Carbide represent the perfect combination of strength, precision, and durability. Designed for industries that demand high productivity and flawless machining, these inserts deliver outstanding results in parting and grooving operations.
By choosing Lizhou Carbide, manufacturers gain access to over three decades of expertise, a global supply network, and technical support that ensures maximum efficiency in every machining process.
Lizhou Carbide – Your Reliable Partner in Precision Cutting Solutions.
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