Sheartak Spiral Cutterhead for SCM 2250 Combined Thickness Planer
Unlock smoother finishes, quieter cutting, and longer-lasting performance
The SCM 2250 combined surfacing and thickness planer is respected for its solid construction, accuracy, and reliability in both professional and serious hobby workshops. Built for consistent jointing and thicknessing, it performs well across a wide range of hardwoods and softwoods.
To take your SCM 2250 to the next level, upgrading to a Sheartak spiral cutterhead delivers a noticeable improvement in cut quality, noise reduction, and long-term efficiency.
Why Choose a Sheartak Spiral Cutterhead?
✔ Exceptionally Smooth Finish — No Tear-Out
Each carbide insert is mounted at a precise shear angle, producing a staggered cutting action rather than a single straight cut. The result is minimal tear-out and a glass-smooth surface, even on highly figured or difficult grain.
✔ Much Quieter Operation
Multiple inserts engage the material gradually, significantly reducing cutting impact and noise compared to traditional straight-knife cutterheads.
✔ Long-Lasting Carbide Inserts
Precision 15 × 15 × 2.5 mm inserts are made from sintered tungsten carbide, offering more than 10× the lifespan of high-speed steel. Each insert features four cutting edges, maximizing value and uptime.
✔ Quick, Hassle-Free Maintenance
No knife setting or sharpening required. Simply loosen the screw, rotate the insert 90° to a fresh edge, and tighten. Factory-ground inserts ensure consistent cutting height every time.
✔ Improved Dust Collection
Spiral cutterheads generate smaller, thinner chips that are easier for dust extractors to capture, helping keep your shop cleaner.
✔ Lower Cost of Ownership
Reduced sanding, no sharpening expenses, and long insert life mean the cutterhead quickly pays for itself over time.
What’s Included
Upgrade your SCM 2250 with a Sheartak spiral cutterhead and enjoy smoother finishes, quieter cuts, and reliable professional performance—day after 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.
