Parting inserts are critical components in machining operations, designed to accurately cut off a finished part from the raw stock or to create grooves. These specialized tools enable efficient material separation across various materials, from soft plastics to hardened steels. Products were evaluated based on material compatibility, insert geometry, tool holder compatibility, cut capacity, user reviews, and feature analysis.
RHFGYY 5/8inch Indexable Lathe Grooving Parting Holder MGEHR1616 Spring Steel with 10pcs MGMN200/300 Heavy Duty Nickel Plated Right Hand Cut Off Tool Carbide Inserts (5/8in Holder +MGMN300)
$39.90
This comprehensive kit includes a robust spring steel holder and 10 versatile, tin-coated carbide inserts suitable for a range of steel types, offering excellent value and utility.
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RHFGYY 5/8inch Indexable Lathe Grooving Parting Holder MGEHR1616 Spring Steel with 10pcs MGMN200/300 Heavy Duty Nickel Plated Right Hand Cut Off Tool Carbide Inserts (5/8in Holder +MGMN300)
$39.90
The RHFGYY kit provides a full setup with a durable holder and a generous quantity of 10 general-purpose inserts, making it a cost-effective choice for a complete parting solution.
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THINBIT 3 Pack LGPT045D5R 'L' Series, Uncoated Carbide, Parting Insert for Non-Ferrous Alloys, Aluminium and Plastic Without Interrupted Cuts
$64.20
THINBIT's 'L' Series inserts are engineered for precision applications, featuring narrow widths ideal for reducing material loss in precious metals and thin-wall tubing, without interrupted cuts.
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- GTN Self-Grip Carbide Parting, Insert Cutting Width(B): 0.118", Radius(R): 0.079", no lead angle
- CVD coated, for cut-off and grooving, Single-sided notation
- A high thermal shock resistance, suitable for light-interrupted cuts
- Fit for Adjustable Blades SPH, SPB and grooving & cut-off holder
- Soft material parting processing is preferred, sharp cutting edge, low cutting force, low and medium-speed feed processing, pipe fittings, thin-wall parts and small parts processing
- 🎄 Material: Made of solid carbide with tin coated
- 🎄 Coating: CVD , Suitable for Steel and Stainless steel parts processing. Coating endows inserts strong impact resistance, good versatility with high precision, High finish and High wear resistance.
- 🎄 Application: Fit for MGEHR/MGIVR Grooving Cut-Off Tool
- 🎄 Features: Offer long tool life and faster cutting speed, low friction coefficient, good wear resistance.Perform good even in very dirty environment
- 🎄 Package includes: 10pcs MGMN200 /2mm Grooving cut-off carbide inserts
- See Downloads section below item photos for detailed product information, technical information and compatible toolholders.
- Narrow widths reduce material loss and part deflection. Perfect for precious metals, thin wall tubing and small diameter parts. Cuts flush to collet face or shoulder on main spindle side using M03 or sub-spindle side using M04.
- Use for parting solid stock up to 1.000" or tubing with wall thickness up to .500".
- Uncoated DURA-MAX 5000 carbide parting insert for non-ferrous alloys, aluminium and plastic without interrupted cuts.
- Use with Large series toolholders. Use RH straight or LH 90 degree toolholder.
- Holder’s size：ZQ1010R02, Shank Size (B x H): 1/2" x 1/2" Overall Length (L): 3.9" , Screw size: M4x16, Wrench size: L3
- Insert’s size: SP200, Tin Coated Carbide Insert, grooving width: 2mm
- GTN-2 insert stop assures accuracy of center height and precise depth of cut
- Simple set-up with one piece integral shank holder adapts easily to any machine type and turret configuration
- Package: 1 x ZQ1010R02 Right -Hand holder + 10pcs SP200 carbide inserts
- Double-Sided Grooving Inserts – Features precise dimensions: Width (B) 0.118", Radius (R) 0.016", Length (L) 0.827" for accurate and efficient machining.
- CVD Coated Universal Grade – Yellow-color coated inserts provide durability and versatility, ideal for grooving and cut-off (parting) operations in turning machines.
- Versatile Cutting Performance – Suitable for both continuous and interrupted cutting, from roughing to finishing, ensuring smooth operation on various steel materials.
- Optimized for Soft Materials & Precision Work – Sharp cutting edge with low cutting force, perfect for low to medium-speed feed processing, thin-wall parts, pipe fittings, and small components.
- Multi-Functional Machining Tool –Feyzor design allows for diverse applications including parting, grooving, turning, facing, and profiling, with a unique chip-breaker for enhanced performance and productivity.
- SPB332 Parting Blade Size (H x W x L): 1.26" x 0.063"x 5.906''
- Used in SMBB2032, SMBB2532, SMBB3232 Tool Block
- Moveable length to control the depth of cut, No Wrench
- It is designed to hold a 3mm thick carbide grooving insert (Gtn-3 SP300)
- Include 1Pcs 32-3 blades SPB332 and 10Pcs GTN-3 Tin coated inserts
- Indexable Cutting Tool Holder Set include 1 pc 3/4" SLTBN19-5 Tool Block. 1 pc NCIH26-3 adjustable blade with 5 pcs GTN-3 carbide inserts. 1 pc NCIH26-4 with 5 pcs GTN-4 Inserts and 1 pcs wrench.
- CTN-3 carbide inserts made of carbide Grade C6,0.12" width, TiN Coated. GTN-4 carbide inserts, made of Carbide Grade C6, 0.16" width, TiN Coated
- Suitable for varied Grooving,Cut-off,Parting-off,Chamfering
- This cut-off tool kit works with tool holders that can hold 3/4" AXA lathe turning bits,Equipped carbide inserts for Semi-finishing/roughing machining of steel and stainless steel
- Packed in perfect aluminum case
- Premium PVD Coating – Universal grade insert with durable PVD coating, ideal for stainless steel & steel processing.
- Precision GTN-2 Size – Cutting width (B): 0.087", radius (R): 0.079", no lead angle for smooth, high-accuracy cuts.
- Self-Locking Design – GTN inserts securely lock for reliable cut-off & grooving operations, single-sided notation.
- Wide Compatibility – Fits adjustable blades SPH, SPB & grooving/cut-off holders for versatile machining.
- Efficient Grooving & Parting – Designed for turning machines to create clean grooves & precise cut-off operations.
- Package list: 1pc 3/8" shank grooving holder MGEHR1010-1.5 with L3 Wrench + 10pcs Grooving insertsMGMN150;
- About the MGMN150 Grooving cut off inserts: cutting width:0.06"(1.5mm), design for steel
- About the holders:Material: 40Cr-42CrMo , HRC42-46 , imported steel .shank dia: 3/8"
- Contained in plastic boxes, easy to store, waterproof, rust-proof, and anti-oxidation.
- lt ls Processed By lmported Technology And Has The Advantages Of High Hardness, Strong Wear ResistanceHigh Smoothness, Not Easy To Stick To The Knife, And Smooth Chip Removal.
- Size, MGMN200-M, Width(B): 2mm, Radius(R): 0.2mm, Longth(L): 16mm, Dimension(D): 1.2mm, Thickness(S): 3.5mm,fit for Korloy grooving holder.
- General material for parting and grooving processing, a nanocomposite coating of a AITiSi base, high temperature stability, good hardness. Small friction coefficient, reduce the adhesion between workpiece and insert cutting edge.
- Soft material parting processing is preferred, sharp cutting edge, low cutting force, low and medium-speed feed processing, pipe fittings, thin-wall parts and small parts processing.
- Suitable for stailess steel, carbon steel and heat-resistant steel processing.
- CDBP multifunctional tools can be used in different applications, such as parting, grooving, turning, end face and profiling machining. Unique installation and chip-breaker can ensure excellent performance and production efficiency.
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Last update on 2026-07-18 / Affiliate links / Images from Amazon Product Advertising API
How to Choose the Best Parting Inserts
Understanding Insert Material and Coating
The performance and longevity of parting inserts are heavily influenced by their material composition and any applied coatings. For instance, the THINBIT 'L' Series inserts are made from uncoated carbide, specifically designed for non-ferrous alloys, aluminum, and plastics. Using such inserts on harder materials like steel typically leads to rapid wear. In contrast, the RHFGYY MGMN300-M inserts are crafted from solid carbide with a tin coating, making them suitable for 45# Steel, spring steel, and die steel. The tin coating provides enhanced hardness and lubricity, crucial for machining ferrous materials and extending tool life in demanding applications.
Considering Insert Geometry and Width
The geometry and width of a parting insert dictate its efficiency and the quality of the cut. Narrower inserts, like those offered by THINBIT, are particularly advantageous for precision work, precious metals, or thin-wall tubing, as they minimize material loss and reduce part deflection. However, very narrow inserts may be less stable for heavy-duty applications. For general-purpose grooving and parting, inserts like the MGMN300 from RHFGYY or GTN-3 inserts mentioned with VerRich tools offer a balance of strength and versatility. Users often report that the specific chip breaker geometry also plays a role in chip evacuation and surface finish.
Selecting the Right Tool Holder System
A compatible and rigid tool holder system is paramount for stable and accurate parting operations. Systems vary significantly; some, like the RHFGYY MGEHR1616-3 holder, are made from spring steel, emphasizing high quality and stability. Others, such as the SHARS adjustable blades, are designed to fit specific holder series like CXA or to accommodate GTN inserts with positive stop mechanisms, ensuring precise depth control. The self-lock mechanism found in some SHARS blades provides quick and secure insert changes, which can be a significant time-saver in production environments. It is crucial to ensure that the chosen insert matches the holder's specifications, including shank diameter and clamping style.
Evaluating Cutting Depth and Workpiece Capacity
The maximum cutting depth and the diameter of the workpiece an insert can effectively handle are vital considerations. THINBIT inserts, for example, are specified for parting solid stock up to 1.000" or tubing with a wall thickness up to .500". For larger or deeper cuts, tools like the VerRich Lathe Parting tool, described as ideal for deep cutting and grooving, would be more appropriate. Similarly, SHARS offers blades with stated maximum work diameters, such as 1-1/2". Mismatched capacity can lead to excessive tool wear, poor surface finish, or even tool breakage, highlighting the importance of selecting an insert and holder combination that can manage the intended workpiece dimensions.
Pros & Cons
THINBIT 3 Pack LGPT045D5R 'L' Series, Uncoated Carbide, Parting Insert for Non-Ferrous Alloys, Aluminium and Plastic Without Interrupted Cuts
Pros
- Narrow widths significantly reduce material loss, beneficial for expensive materials.
- Specifically designed for non-ferrous alloys, aluminum, and plastics, optimizing performance in these materials.
- Reduces part deflection in thin-wall tubing and small diameter work.
- Suitable for parting solid stock up to 1.000" and tubing up to .500" wall thickness.
Cons
- Uncoated carbide is not suitable for steel or other harder ferrous materials.
- Limited to applications without interrupted cuts, restricting versatility.
RHFGYY 5/8inch Indexable Lathe Grooving Parting Holder MGEHR1616 Spring Steel with 10pcs MGMN200/300 Heavy Duty Nickel Plated Right Hand Cut Off Tool Carbide Inserts (5/8in Holder +MGMN300)
Pros
- Includes a robust MGEHR1616-3 spring steel holder, known for durability.
- Comes with 10 tin-coated MGMN300-M carbide inserts, offering good value.
- Inserts are suitable for a wide range of steels, including 45# Steel, spring steel, and die steel.
- Tin coating enhances wear resistance and extends tool life in various applications.
Cons
- May not offer the same level of precision or narrow width for specialized non-ferrous applications as dedicated inserts.
- The universal nature might mean less optimized performance for highly specific materials compared to specialized inserts.
VerRich Lathe Parting tool,Lathe Cut Off Tool SPB326 with 10pcs GTN-3 NC3030 Carbide Inserts
Pros
- Comes as a kit with an SPB326 turning tool plate and 10 GTN-3 NC3030 carbide inserts.
- Boring bar is made of high-quality tungsten steel, offering wear resistance and good toughness.
- Designed for long and deep cutting and grooving, suitable for challenging applications.
- GTN-3 inserts are a common and versatile type for general machining.
Cons
- Specific material compatibility for the inserts (NC3030) is not detailed, requiring further investigation.
- The overall dimensions of the holder (110mm*26mm*3mm) might not fit all lathe setups easily.
Common Mistakes to Avoid
Incorrect Material Application
A frequent error observed in workshops is using a parting insert designed for one material on another it's not suited for. For example, attempting to part hardened steel with THINBIT 'L' Series uncoated carbide inserts, which are explicitly for non-ferrous alloys, aluminum, and plastic, will lead to premature insert failure and poor cut quality. Always verify the insert's material compatibility, noting if it's tin-coated like the RHFGYY MGMN300-M inserts for steel, or uncoated for softer materials.
Ignoring Workpiece Diameter and Cutting Depth Limits
Overlooking the specified maximum work diameter or cutting depth capacity of a tool can result in unstable cuts, excessive vibration, and tool breakage. The SHARS NCIH-19-2-PS blade, for instance, has a stated maximum work diameter of 1-1/2". Pushing beyond this limit with an undersized blade or holder can compromise rigidity. Similarly, while VerRich tools are described as ideal for deep cutting, attempting excessively deep cuts with inserts not designed for such loads can cause issues.
Mismatched Tool Holder and Insert Systems
Compatibility between the parting insert and its holder is critical, yet often overlooked. Some blades, like the SHARS 3/4" Retrofit GTN Cut-Off and Grooving Blade, are specifically designed to fit particular holder series, such as the CXA Series Holder #7. Attempting to force an incompatible insert or blade into a holder can damage both components, lead to insecure clamping, and create dangerous machining conditions. Always ensure that GTN inserts, for instance, are paired with the correct GTN-compatible blade or holder system for optimal performance and safety.
