Explore our expertly engineered collection of Geetech woodworking tools, featuring precision spiral cutterheads designed to transform your planing and jointing experience. Whether you're working with a 6-inch jointer or a 20-inch planer, Sheartak's custom-designed cutter heads eliminate common woodworking challenges like tear-out, washboard marks, and excessive noise.
Our spiral cutterhead technology represents a significant advancement in woodworking efficiency. Each mechanical component is precision-crafted with premium carbide inserts arranged in a helical pattern, delivering a superior shear cut that leaves a glassy-smooth finish on even the most challenging figured hardwoods and softwoods. The staggered cutting action ensures your woodworking tools operate significantly quieter while producing exceptional results.
Woodworkers worldwide are retrofitting their Geetech machines with Sheartak spiral cutterheads to experience transformative benefits. The carbide inserts stay sharp up to 50 times longer than traditional high-speed steel blades, with each insert featuring four usable cutting edges. This innovative cutter head design means no more time-consuming blade sharpening—simply rotate to a fresh edge in minutes.
Available for Geetech CT-15, CT-200, CT-204L, CT-344, CT-345, CT-508G, G6, G8, G20 models and more, each spiral cutterhead jointer and planer upgrade includes premium Japan-made NSK bearings, spare carbide inserts, installation hardware, and comprehensive warranty coverage. The precision-ground inserts maintain a tolerance of +/-0.0004" for perfect interchangeability and consistent performance.
Transform your workshop with professional-grade woodworking tools that deliver smoother finishes, dramatically reduced noise levels, easier dust extraction, and maintenance-free operation. Each spiral cutter head is dynamically balanced and ready to install, bringing commercial-quality results to your Geetech equipment. Proudly family-operated, Sheartak offers free consultations to help you select the perfect upgrade for your specific machine model.
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.
