Carbide Inserts for Spiral Cutterheads – 15×15×2.5mm R150, 4-Sided Indexable
Upgrade the performance of your spiral cutterhead with premium 15×15×2.5mm R150 carbide inserts from Sheartak. Manufactured from premium tungsten carbide and precision ground to tight tolerances, these indexable inserts deliver outstanding cutting performance, exceptional durability, and a superior surface finish.
Each insert features four precision-ground cutting edges. When one edge becomes dull or chipped, simply rotate the insert 90° to expose a new sharp edge. There is no need for sharpening or knife setting, significantly reducing machine downtime and maintenance costs.
The R150 radius cutting edges are designed to create a smooth shear cut when installed on a spiral cutterhead, minimizing tear-out, reducing cutting noise, and producing an excellent finish on softwoods, hardwoods, figured woods, and difficult grain patterns.
Features
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Premium tungsten carbide construction
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Size: 15×15×2.5 mm
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R150 radius cutting edges
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Four indexable cutting edges per insert
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Precision ground to ±0.01 mm (±0.0004")
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Standard tapered mounting hole
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Standard 30° cutting geometry
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Lasts up to 40–50 times longer than conventional HSS knives
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No sharpening required—simply rotate to a fresh cutting edge
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Produces cleaner cuts with reduced tear-out and quieter operation
Compatible With
Compatible with many spiral and helical cutterheads, including those manufactured by:
Ideal Applications
Package Includes
Whether you are replacing worn inserts or keeping spare cutters on hand, Sheartak carbide inserts provide long service life, consistent cutting quality, and lower operating costs, helping your machines perform at their best every day.
Do I need to replace the original bearings?
If the bearings in your machine are in good condition, they can be reused by carefully removing them with a bearing or pulley puller. However, if the bearings are tightly pressed onto the shaft, removal may cause damage. To minimize this risk, we recommend replacing old bearings with our greased and sealed bearings, designed for long-lasting performance. For a smooth upgrade, we suggest adding the bearings to your shopping cart before completing your purchase.
We provide premium bearings from NSK, SKF, NTN, FAG, Timken. They are renowned for their high quality and performance, designed to provide durability and reliability in various applications
Do I need to to Add a Few Boxes of Carbide Inserts
We provide 5 carbide inserts and 5 screws as spare parts. However, many of our customers choose to purchase additional boxes, as the shipping costs for separate purchases can make it less economical.
Do I need a Torque Wrench?
To securely lock the carbide inserts, we recommend applying a torque of 48 to 52 Pound-Inches (or 5.42 to 5.88 Newton-Meters). (Note: 1 Newton-Meter is equal to 8.851 Pound-Inches, and 1 Pound-Inch is approximately 0.113 Newton-Meters.) It is crucial not to apply excessive torque, as this could cause the carbide inserts to crack or explode. On the other hand, using too little torque may result in the inserts not being properly secured, which could lead to cracks, shattering, or uneven height on the cutter block, causing ridges or lines on the board.
If one person is responsible for maintaining the machine, they can typically apply the same torque consistently without a torque wrench. However, when multiple people are involved in machine maintenance, ensuring uniform torque application can be challenging. For consistency and peace of mind, we recommend using a torque wrench.
What kind of steel the cutter block is made of?
The cutter block is constructed using GB/T 40Cr, a structural alloy steel of the same caliber as ASTM grade 5140, AISI 5140, SAE 5140, DIN 41Cr4, BS 41Cr4, JIS SCr440, and EN 41Cr4.The primary components of this steel are as follows: carbon (C) at a range of 0.37-0.44%, silicon (Si) between 0.17-0.37%, manganese (Mn) within 0.50-0.80%, and chromium (Cr) from 0.80-1.10%.
In terms of physical properties, this steel exhibits a tensile strength range of 115-234σb/MPa, a yield strength of 2σ 0.2 ≥/MPa, and an elongation capacity of 65 δ5≥ (%). It also has a HBS range of 123-321 and a HRC rating of 30.
This alloy steel is frequently utilized in low to moderately stressed components for machines, engines, and vehicles.
