Upgrade KNOVA 8" Wood Jointer with Sheartak Spiral Cutterhead Skip to content
Tel：+1-519-880-8181 International, Toll- Free (Canada & USA) 1-877-417-4327
Tel：+1-519-880-8181 International, Toll- Free (Canada & USA) 1-877-417-4327
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Spiral Cutterhead for KNOVA 8" Wood Jointer KN CM-18A / 10888

Spiral Cutterhead for KNOVA 8" Wood Jointer KN CM-18A / 10888

by Sheartak
Availability:
5+ in stock, ready to be shipped
SKU S012604
$489.00 - $489.00
$489.00
$489.00 - $489.00
$489.00
Request a quote
Cancellation policy

Cancel for any reason at any time until your order shipped. Please be aware that banks charge for each payment transaction, so we will deduct these fees from the refunded amount. Once your order has shipped, you may return your order. For details, please review our Returns and Cancellations policies. Special order items may not be eligible for cancellation.

Return Policy

Most items can be returned within 30 days of receipt for a refund of the product cost less return shipping. Shipping, duties, and taxes are not refundable. For details, please review our Returns and Cancellations policies.

International Shipping

The product price and shipping and handling cost do not include import duties, taxes, or brokerage fees. As the transportation fee for your order is the only fee we charge, it is the buyer's responsibility to pay for these charges. We recommend that you contact your country's customs office or visit their website to determine if there will be any additional costs.

The Harmonized Tariff Schedule (HS code) for spiral cutterheads and other woodworking tools is 8466.92.50.10.

California Proposition 65

Spiral Cutterhead for KNOVA 8" Wood Jointer KN CM-18A / 10888


Upgrade Your KNOVA 8" Wood Jointer KN CM-18A / 10888 with Sheartak Spiral Cutterheads for Superior Performance

Enhance your woodworking experience with the Sheartak Spiral Cutterhead, designed to provide the following benefits:

✅ Smoother Finish with No Tear-Out
Each knife is positioned at a slight angle, creating a shear cut. Unlike traditional straight knives, the spiral cutterhead planes the board in a staggered motion, minimizing tear-out and leaving a glossy, smooth surface—even on highly figured hardwood.

✅ Significantly Reduced Noise
The staggered cutting action of the spiral cutterhead results in a much quieter operation compared to conventional straight blades.

✅ Extended Blade Life—10x Longer Than HSS
The 15x15x2.5mm inserts are made of sintered tungsten carbide, which is significantly harder and more durable than high-speed steel (HSS). Each insert features four cutting edges for extended use.

✅ Easy and Quick Blade Changes
Precision-ground to a tolerance of +/-0.0004" (or +/-0.01mm), the inserts are fully interchangeable. Simply loosen the screw, rotate the insert 90° for a fresh edge, and tighten—it takes just minutes!

✅ Improved Dust Extraction
The spiral cutterhead produces finer and shorter chips, making dust collection more efficient.

✅ Cost-Effective and Low Maintenance
With its superior cutting performance, reduced sanding requirements, and no sharpening needed, this upgrade pays for itself in no time!

Kit Includes:

✔ 40 carbide inserts (pre-installed on the cutterhead)
✔ 5 spare carbide inserts
✔ 5 spare screws
✔ 1 wrench

Upgrade your jointer today and experience the Sheartak advantage!

Mejore su Regruesadora KNOVA de 8" KN CM-18A / 10888 con los Cabezales de Corte en Espiral Sheartak para un Rendimiento Superior

Optimice su experiencia en carpintería con el cabezal de corte en espiral Sheartak, diseñado para ofrecer los siguientes beneficios:

✅ Acabado más Suave sin Astillado
Cada cuchilla está posicionada en un ligero ángulo, creando un corte en cizalla. A diferencia de las cuchillas rectas tradicionales, el cabezal de corte en espiral cepilla la madera con un corte escalonado, minimizando el astillado y dejando una superficie lisa y brillante, incluso en maderas altamente veteadas.

✅ Reducción Significativa del Ruido
La acción de corte escalonada del cabezal en espiral reduce considerablemente el ruido en comparación con las cuchillas rectas convencionales.

✅ Mayor Durabilidad—10 Veces Más que el HSS
Las inserciones de 15x15x2.5mm están hechas de carburo de tungsteno sinterizado, un material mucho más duro y resistente que el acero de alta velocidad (HSS). Cada inserción cuenta con cuatro filos de corte para una mayor duración.

✅ Cambio de Cuchillas Fácil y Rápido
Rectificadas con precisión a una tolerancia de +/-0.0004" (o +/-0.01mm), las cuchillas son completamente intercambiables. Simplemente afloje el tornillo, gire la inserción 90° para un filo nuevo y ajústela nuevamente en cuestión de minutos.

✅ Mejor Extracción de Polvo
El cabezal en espiral genera virutas más finas y cortas, facilitando la recolección del polvo.

✅ Económico y de Bajo Mantenimiento
Gracias a su excelente rendimiento de corte, menor necesidad de lijado y eliminación del afilado, esta mejora se amortiza en muy poco tiempo.

El Kit Incluye:

✔ 40 inserciones de carburo (preinstaladas en el cabezal de corte)
✔ 5 inserciones de carburo de repuesto
✔ 5 tornillos de repuesto
✔ 1 llave

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
If you add the bearings to your order, we will preinstall them for you when premounting is possible, saving you the hassle of doing it yourself.

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.