Transform your C.I.I woodworking equipment with Sheartak's precision-engineered spiral cutterhead upgrades. Our advanced cutter head systems are specifically designed to retrofit C.I.I planers and jointers, delivering professional results that far exceed traditional straight-knife performance.
As a leading provider of premium woodworking tools, Sheartak offers specialized spiral cutterheads for C.I.I machines, including the popular 15-inch planer models. Each mechanical component is manufactured to exacting standards, featuring high-grade carbide inserts strategically positioned along helical grooves to create a true shear-cut action.
Superior Performance for C.I.I Machines
Our spiral cutterhead jointer and planer upgrades eliminate the frustrations of traditional blade systems. The advanced cutter head design incorporates 80 premium carbide inserts on 5 spirals for 15-inch models, providing exceptional cutting performance across all wood species. Each insert features four indexable cutting edges, extending tool life up to 40 times longer than conventional HSS blades.
Professional-Grade Woodworking Tools
Engineered specifically for C.I.I woodworking professionals and enthusiasts, these spiral cutterhead systems deliver:
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Glass-smooth finishes with no tear-out, even on highly figured hardwoods
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Dramatically reduced noise levels for a more pleasant working environment
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Superior dust extraction thanks to smaller, more uniform chips
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Quick maintenance - simply rotate inserts 90° for a fresh cutting edge in seconds
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Enhanced productivity with reduced sanding requirements and minimal downtime
Premium Mechanical Components
Every Sheartak spiral cutterhead for C.I.I machines includes precision-machined mechanical components and Japan-made NSK premium sealed bearings for reliable, long-lasting performance. The round-edged carbide inserts are precisely angled to create a shear-cutting action that transforms your woodworking tools into professional-grade equipment.
Whether you're upgrading a C.I.I 15-inch planer or retrofitting a spiral cutterhead jointer, Sheartak provides complete solutions with spare inserts, mounting hardware, and detailed installation guidance. Experience the difference that professional-grade C.I.I woodworking upgrades can make in your shop.
Ready to upgrade? Browse our complete collection of spiral cutterheads designed specifically for C.I.I machines and discover why thousands of woodworkers trust Sheartak for their cutter head solutions.
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.
