Grooving Part Off Holders are essential tooling for lathes, designed to create precise grooves on workpieces or to cleanly separate finished parts from stock material. They are critical for efficiency in various metalworking operations, from automotive components to intricate custom parts. Products were evaluated based on shank size, insert compatibility, holder material, overall stability, user reviews, and feature analysis.
ASZLBYM Lathe Grooving Tool Holder Grooving Cut-Off Tool Holder MGEHR1616-2.5 With 11pcs MGMN250-M Indexable Carbide Grooving Inserts
$18.59
This ASZLBYM holder offers a versatile 16mm shank and a common MGMN250-M insert size, balancing rigidity with broader application suitability.
View on Amazon
ASZLBYM Lathe Grooving Tool Holder Grooving Cut-Off Tool Holder MGEHR1212-1.5 With 11pcs MGMN150-G Indexable Carbide Grooving Inserts
$19.99
The ASZLBYM MGEHR1212-1.5 provides a complete kit with a smaller 12mm shank and 11 inserts, ideal for lighter tasks or smaller machines.
View on Amazon
OSCARBIDE 3/4"Indexable Lathe Grooving Parting Holder QA12R-30 Heavy Duty Right -Hand Nickel PlatedCut Off Tool with Carbide Insert, 1pcs
$42.99
The OSCARBIDE 3/4" holder is engineered for heavy-duty applications, featuring a robust integral shank and a GTN-3 insert stop for enhanced precision.
View on AmazonLooking for the best Grooving Part Off Holders?
Discover now our comparison of the best Grooving Part Off Holders. It is never easy to choose from the wide range of offers. On the market, you will find an incalculable number of models, all at different prices. And as you will discover, the best Grooving Part Off Holders are not always the ones at the highest prices! Many criteria are used, and they make the richness and relevance of this comparison.
To help you make the best choice among the hundreds of products available, we have decided to offer you a comparison of the Grooving Part Off Holders in order to find the best quality/price ratio. In this ranking, you will find products listed according to their price, but also their characteristics and the opinions of other customers. Also discover our comparisons by categories. You won’t have to choose your products at random anymore.
- Package : You will receive 1pc 12mm shank diameter MGEHR1212-1.5 carbide lathe turning tool holder , 11pcs MGMN150-G grooving carbide turning inserts.
- Material : The MGEHR1212-1.5 lathe turning tool holder material is 40Cr steel, it has the characteristics of durability, sturdiness and stability, and good anti-rust performance. The MGMN150-G grooving inserts cutter material is carbide, and the coating...
- MGMN150-G carbide turning insert size : thickness: 1.2mm ≈ 0.047", length : 16mm ≈ 0.629" , height : 3.5mm ≈ 0.137" , P=7 degree.
- Application : Suitable for wide and deep groove machining.The Grooving Cut-Off Tool Holder insert can be used for cutting stainless steel, iron pipe, copper pipe, aluminum pipe, non-metallic pipe, plate and other materials.
- Easy to store : the grooving tool holder and carbide grooving inserts are packed in a plastic container, safe and easy to store, please rest assured to buy!
- Package : You will receive 1pc 12mm shank diameter MGEHR1212-2 carbide lathe turning tool holder , 11pcs MGMN200-G grooving carbide turning inserts.
- Material : The MGEHR1212-2 lathe turning tool holder material is 40Cr steel, it has the characteristics of durability, sturdiness and stability, and good anti-rust performance. The MGMN200-G grooving inserts cutter material is carbide, and the coating is...
- MGMN200-G carbide turning insert size : thickness: 1.6mm ≈ 0.063", length : 16mm ≈ 0.629" , height : 3.5mm ≈ 0.137" , P=7 degree.
- Application : Suitable for wide and deep groove machining.The Grooving Cut-Off Tool Holder insert can be used for cutting stainless steel, iron pipe, copper pipe, aluminum pipe, non-metallic pipe, plate and other materials.
- Easy to store : the grooving tool holder and carbide grooving inserts are packed in a plastic container, safe and easy to store, please rest assured to buy!
- [MAXIMUM RIGIDITY] The 5/8" (16mm) large shank provides the backbone needed for vibration-free parting and deep internal grooving where smaller tools often flex or fail
- [INTERNAL & EXTERNAL MASTERY] Includes MGIVR (Internal) and MGEHR/L (External) holders. A specialized kit for complex grooving, recessing, and part-off operations
- [ANTI-SNAP DESIGN] Our nitrided 40Cr steel holders are treated to resist the shocks of interrupted cuts, protecting your 10 included MGMN200 inserts from premature chipping
- [CLEAN CHIP EVACUATION] TiN-coated inserts offer low friction and superior heat resistance, ensuring clean chip flow and a smooth finish on tough metals
- [MID-SIZE LATHE OPTIMIZED] Designed for precision hobbyists and industrial shops using BXA or larger tool posts. Delivers reliable accuracy for tight-tolerance grooves
- 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.
- Package : You will receive 1pc 16mm shank diameter MGEHR1616-2.5 carbide lathe turning tool holder , 11pcs MGMN250-M grooving carbide turning inserts.
- Material : The MGEHR1616-2.5 lathe turning tool holder material is 40Cr steel, it has the characteristics of durability, sturdiness and stability, and good anti-rust performance. The MGMN250-M grooving inserts cutter material is carbide, and the coating...
- MGMN250-M carbide turning insert size : thickness: 2mm ≈ 0.079", length : 18.5mm ≈ 0.728" , height : 3.5mm ≈ 0.152" , P=7 degree.
- Application : Suitable for wide and deep groove machining.The Grooving Cut-Off Tool Holder insert can be used for cutting stainless steel, iron pipe, copper pipe, aluminum pipe, non-metallic pipe, plate and other materials.
- Easy to store : the grooving tool holder and carbide grooving inserts are packed in a plastic container, safe and easy to store, please rest assured to buy!
- Package list: 1pc 1/2" shank grooving holder MGEHR1212-2 with L3 Wrench + 10pcs Grooving insertsMGMN200;
- About the MGMN200 Grooving cut off inserts: cutting width:0.078"(2mm), design for steel
- About the holders:Material: 40Cr-42CrMo , HRC42-46 , imported steel .shank dia: 1/2"
- 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 Resistance High Smoothness, Not Easy To Stick To The Knife, And Smooth Chip Removal.
- 【 Material】Made of alloy steel hardened to 52-56, ensuring durability and long-lasting performance.
- 【Versatile Cutting Angle】The milling cutter features a 90° cutting angle and screw-in insert, providing for PRECISION and efficiency in various cutting operations.
- 【Hardened Inserts】The inserts are hardened and specifically designed for cutting hardened steel parts, making them suitable for a wide range of applications.
- 【Multiple Models】Choose from SMBB1626, SMBB2026, SMBB2032, SMBB2532, or SMBB3232 according to your specific needs. Each model is compatible with different SPB blades.
- 【Package Inclusion】Includes cut off block (blade not included) and wrench for convenient setup and use.
- Precision Positioning Accuracy: Achieve repeatable setups with ≤0.005mm accuracy for SMBB1626, SMBB2026, SMBB2032, SMBB2532, SMBB3232 models, supporting stable machining and consistent for surface finish in demanding CNC operations with SPB Slotted...
- Versatile Toolholder Compatibility: Fits BT/HSK/CAT systems by model, accepting Ø16–26mm tools including milling cutters, drills, boring cutters; works seamlessly with Cutoff Block setups for varied metalworking lathe applications.
- Enhanced Vibration Resistance: Alloy steel body with quenching and internal reinforcement ribs increases vibration resistance by 30%, delivering reliable performance for heavy cutting and high-speed across multiple models.
- Integrated Cooling Option: Optional internal coolant channel directs fluid to the tool tip, lowering cutting temperature, extending tool life and boosting processing efficiency during grooving and parting tasks.
- Locking Mechanism: Hydraulic or mechanical lock (model dependent) enables tool changes in ≤3 seconds, compatible with most CNC machine ATC systems; nitrided contact surfaces with HRC60 hardness improve wear resistance by 50%.
- Please note that this tool holder comes with NO insert installed. Includes a holder,a screw, a wrench.
- Size：Left hand ;Shank diameter :25mm ;Overall Length (L):150mm.
- The Tool Holder is High Temperature Heat Treatment Process, High Temperature Tempering.
- This toolholder is compatible with grooving, face grooving, threading and parting inserts.
- Carbide Insert：GBR/L32 GBR/L43 insert assures accuracy of center height and precise depth of cut.
- Please note that this tool holder comes with NO insert installed. Includes a holder,a screw, a wrench.
- Size：Left hand ;Shank diameter :25mm ;Overall Length (L):150mm.
- The Tool Holder is High Temperature Heat Treatment Process, High Temperature Tempering.
- This toolholder is compatible with grooving, face grooving, threading and parting inserts.
- Carbide Insert：GBR/L32 GBR/L43 insert assures accuracy of center height and precise depth of cut.
What is the purpose of a comparison site?
When you search for a product on the Internet, you can compare all the offers that are available from the sellers. However, it can take time when it is necessary to open all the pages, compare the opinions of the Internet users, the characteristics of the products, the prices of the different models… Offering you reliable comparisons allows us to offer you a certain time saving and a great ease of use. Shopping on the Internet is no longer a chore, but a real pleasure!
We do everything we can to offer you relevant comparisons, based on various criteria and constantly updated. The product you are looking for is probably among these pages. A few clicks will allow you to make a fair and relevant choice. Don’t be disappointed with your purchases made on the Internet and compare the best Grooving Part Off Holders now!
Last update on 2026-04-07 / Affiliate links / Images from Amazon Product Advertising API
How to Choose the Best Grooving Part Off Holders
Shank Size and Machine Compatibility
The shank size of a grooving part off holder is paramount for ensuring proper fitment and stability in your lathe's tool post. Holders like the ASZLBYM MGEHR1212-1.5 typically feature a 12mm shank, suitable for smaller benchtop lathes, while the ASZLBYM MGEHR1616-3 offers a more robust 16mm shank for increased rigidity on medium-sized machines. For heavy-duty applications, a 3/4-inch shank, as seen with the OSCARBIDE holder, provides maximum stability, though it requires a compatible tool post. Selecting an incorrect shank size can lead to chatter, poor surface finish, or even tool damage.
Insert Type and Grooving Width
The choice of indexable carbide insert is crucial for achieving the desired groove width and material removal rate. ASZLBYM kits often include MGMN series inserts, such as the MGMN150-G (1.2mm thickness) for fine grooving or the MGMN300-M (2.35mm thickness) for wider, more aggressive cuts. The specific 'G' or 'M' designation can indicate chipbreaker geometry, impacting performance across various materials. Matching the insert thickness to your application's requirements is vital; using an overly wide insert for a shallow groove can lead to unnecessary material waste and increased cutting forces.
Holder Material and Design
The material and construction of the tool holder directly influence its durability and vibration dampening capabilities. Many holders, including the ASZLBYM series, are constructed from 40Cr steel, known for its hardness and wear resistance, which contributes to a longer tool life. More specialized options, like the SMBB series from TreasureCave, may feature alloy steel quenching treatment and internal reinforcement ribs. This advanced design is specifically engineered to minimize vibration during deep grooving or parting operations, resulting in improved surface finish and extended insert life in demanding applications.
Precision and Setup Features
Precision features can significantly enhance the accuracy and repeatability of your grooving and parting operations. The OSCARBIDE holder, for example, integrates a GTN-3 insert stop. This mechanism ensures consistent center height and precise cutting depth, which is critical for maintaining tight tolerances across multiple parts. Similarly, block tool holders like the TreasureCave SMBB series emphasize precision grinding technology, leading to repeat positioning accuracy of ≤0.005mm. These features reduce setup time and common machining errors, particularly in production environments.
Pros & Cons
ASZLBYM Lathe Grooving Tool Holder Grooving Cut-Off Tool Holder MGEHR1212-1.5 With 11pcs MGMN150-G Indexable Carbide Grooving Inserts
Pros
- Compact 12mm shank suitable for smaller lathes and lighter cuts.
- Comes with a generous supply of 11 MGMN150-G inserts, offering good value.
- 40Cr steel construction provides a durable and robust holder body.
Cons
- Limited to a 1.2mm grooving width, which may not suit all applications.
- 12mm shank may exhibit less rigidity compared to larger holders for heavier material removal.
ASZLBYM Lathe Grooving Tool Holder Grooving Cut-Off Tool Holder MGEHR1616-3 With 11pcs MGMN300-M Indexable Carbide Grooving Inserts
Pros
- 16mm shank diameter offers increased stability and rigidity over smaller holders.
- Includes MGMN300-M inserts, providing a wider 2.35mm grooving capability for more aggressive cuts.
- Constructed from durable 40Cr steel, ensuring prolonged tool life under typical use.
Cons
- The wider 2.35mm grooving width might be excessive for fine detail or minimal material removal tasks.
- 16mm shank size may not be compatible with all compact or hobbyist lathe tool posts.
OSCARBIDE 3/4"Indexable Lathe Grooving Parting Holder QA12R-30 Heavy Duty Right -Hand Nickel PlatedCut Off Tool with Carbide Insert, 1pcs
Pros
- Heavy-duty 3/4" shank provides maximum rigidity for demanding parting operations.
- Features a GTN-3 insert stop, enhancing accuracy for center height and cutting depth.
- Integral shank design simplifies setup and adapts well to various machine types.
Cons
- Requires specific GTN-3 inserts, which may necessitate dedicated sourcing.
- The 3/4" shank might be oversized for smaller lathes, limiting compatibility.
Common Mistakes to Avoid
Ignoring Shank Size Compatibility
Users frequently overlook the importance of matching the holder's shank size to their lathe's tool post. Attempting to use a 12mm shank holder, such as the ASZLBYM MGEHR1212-1.5, in a tool post designed for 3/4" holders like the OSCARBIDE can lead to instability and chatter. Conversely, forcing an oversized holder into a smaller tool post is not feasible and can damage equipment. Always verify your machine's specifications against the holder's dimensions.
Selecting the Wrong Insert Width
A common error involves choosing an insert with an inappropriate grooving width for the task. For instance, using a 1.2mm MGMN150-G insert when a 2.35mm MGMN300-M insert (as supplied with ASZLBYM MGEHR1616-3) would be more efficient for a wider groove, can result in excessive passes or premature insert wear. Conversely, an overly wide insert for a small groove can create unnecessary material waste and increased cutting forces.
Underestimating the Importance of Cutting Depth
Failing to consider the maximum cutting depth capability of the holder can lead to operational limitations. The OSCARBIDE 3/4" holder, for example, specifies a maximum cutting depth of 1.18". If your workpiece requires a deeper cut, a holder with insufficient reach will necessitate multiple setup changes or an unsuitable cutting approach, compromising efficiency and finish quality.
Overlooking Holder Rigidity and Design
When tackling tough materials or deep grooving, neglecting the holder's inherent rigidity can lead to poor performance. While 40Cr steel holders like those from ASZLBYM offer good durability, specialized designs, such as the TreasureCave SMBB series with its alloy steel quenching treatment and internal reinforcement rib design, are engineered for superior vibration damping. Overlooking these design aspects can result in excessive chatter, poor surface finishes, and reduced insert life, especially in demanding applications.
