Sheartak Spiral Helical Cutterhead for Woodfast 6" Jointer
Upgrade your Woodfast 6" Jointer with a premium Sheartak Spiral Helical Cutterhead. Designed specifically for this well-built cast-iron machine, the Sheartak cutterhead combines the durability of the original jointer with the performance of modern helical cutting technology.
The Woodfast 6-inch jointer has earned an excellent reputation among woodworkers for its precision, rigid cast-iron construction, and long tables. By replacing the original straight-knife cutterhead with a Sheartak spiral cutterhead, you can enjoy a smoother finish, quieter operation, and significantly reduced maintenance.
Features & Benefits
Superior Surface Finish
Each carbide insert is mounted at a slight shear angle and arranged in a staggered spiral pattern. Rather than striking the wood all at once like traditional straight knives, the inserts slice gradually through the workpiece, producing an exceptionally smooth finish with virtually no tear-out—even on highly figured hardwood.
Quieter Operation
The spiral cutting action allows only a few inserts to engage the workpiece at any given time, greatly reducing cutting noise and vibration for a more comfortable woodworking experience.
Long-Lasting Carbide Inserts
The cutterhead is equipped with premium 15 × 15 × 2.5 mm indexable tungsten carbide inserts that last more than 10 times longer than conventional high-speed steel knives. Each insert features four precision-ground cutting edges, allowing you to simply rotate the insert 90° when one edge becomes dull.
Quick and Easy Knife Changes
All carbide inserts are precision ground to a tolerance of ±0.0004" (±0.01 mm) and are fully interchangeable. There is no need for knife-setting jigs or complicated adjustments. Simply loosen the screw, rotate or replace the insert, and tighten it back into position within minutes.
Improved Dust Collection
The spiral cutterhead produces smaller, thinner chips that are easier for your dust collection system to remove, helping keep your workshop cleaner.
Lower Operating Costs
Unlike traditional straight knives, carbide inserts never require sharpening. Combined with reduced sanding time, extended insert life, and quick insert rotation, the Sheartak spiral cutterhead provides outstanding long-term value and can quickly pay for itself.
Specifications
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Fits: Woodfast 6" Jointer
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High-Tensile Alloy Steel Cutterhead
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Premium Indexable Tungsten Carbide Inserts
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Carbide Insert Size: 15 × 15 × 2.5 mm
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Precision Ground Inserts (±0.01 mm)
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Replacement Inserts and Screws Available
Upgrade your Woodfast jointer with a Sheartak Spiral Helical Cutterhead and experience cleaner cuts, quieter operation, longer tool life, and the exceptional performance that modern carbide insert technology delivers.
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.
