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The Harmonized Tariff Schedule (HS code) for spiral cutterheads and other woodworking tools is 8466.92.50.10.
Upgrading the DeWalt DW735 with a Sheartak spiral cutterhead is a popular modification among woodworkers. Here’s why people choose to make this upgrade:
Superior Finish Quality
Spiral cutterheads use small, individual carbide inserts arranged in a spiral pattern, unlike the stock three-knife straight cutterhead.
The inserts shear the wood fibers at an angle, resulting in a smoother surface with less tear-out, especially on figured or highly grained woods.
2. Longer Blade Life
The carbide inserts are much more durable than the stock HSS blades. Carbide stays sharper longer, especially when working with hardwoods.
Each insert has 4 edges), so if one edge becomes dull or damaged, it can simply be rotated to a fresh edge.
3. Reduced Noise
Spiral cutterheads tend to produce less noise compared to straight blades. The shearing action of the inserts is quieter than the chopping action of straight knives.
4. Reduced Tear-Out
The shearing action of the inserts helps minimize tear-out, even on difficult woods like birdseye maple, curly maple, or oak.
This is particularly valuable for fine woodworking projects where a high-quality finish is required straight from the planer.
5. Easier Maintenance
With the stock three-knife system, replacing or adjusting the blades can be time-consuming and requires precision alignment.
With the spiral cutterhead, there’s no need for manual alignment. The inserts are indexed, so they seat correctly without adjustment.
This spiral cutterhead is designed and manufactured to have the same cutting circle as the original OEM cutterhead. The cutter block has to be installed through the bore for the bearing in the machine housing, all the knives are removed from the cutterhead after the dynamic balance. This saves the hassle to do the removal yourself.
Sheartak spiral cutterheads are made to industrial standards and go through high-quality control and testing. All the knives are made within ±0.0004"/0.01mm to ensure interchangeability. The carbide knives can be securely set in the same cutting circle.;
You can cut up to 1/8" per pass maximum. A disadvantage is that you will have to spend half an hour or so installing all the carbide inserts to the cutter block.;
Read through the manual and watch the short video before you install the carbide inserts. Installation of the carbide inserts is easy.
Installed my cutter head almost a year ago, very easy install into my DW735. To date I have not had to change any of the carbide cutters and still get a perfect finish. I would have used multiple blades of the original design. The best upgrade!
G
Grant Pacey
Very Happy with Sheartak
I am very happy with the product and my experience with Sheartak. The head itself more than meets my expectations and produces an excellent finish on any wood I have used it on. The smaller chip size it produces works much better with my vacuum system as I have not experienced any blockages as I did with the long chips produced with the original cutters. It was easy to install.
I had an after sale request, which had nothing to do with any fault of the product, which they handled with no fuss and were very accommodating. I have nothing to say, but good things in dealing with Sheartak and have no concerns in recommending them.
J
Jeremie B
A worthy upgrade
Installation was easy, but I made it harder than it needed to be. When it was time to put in the new head, I hit the threaded end to align it without putting back the pulley first and I damaged the threads. No big deal though, I sent it to a machining shop nearby and they fixed the threads. After installing it the right way I torqued each knife to spec I tried it and the results were very good, but I had some vert small lines showing. After realigning some of the inserts the boards came out so smooth I understood why people go crazy about these heads. When looking at the boards under light you might see some lines on them but you shouldn’t feel them with your hands. It shouldn’t matter though if you sand your projects, and it is galaxies better than the nicked straight blades I was using (I am kind of lazy about blade changes). I took the same 1/16 passes I usually do and the motor doesn’t seem to be working significantly harder than with the standard head, time will tell if the motor likes the upgrade or not. Noise is reduced but you absolutely will need ear protection anyway. Hard maple usually teared out a lot with the last set of straight blades I had, and the maple test piece came out flawless.
Overall very satisfied, after three years of buying straight knives I feel like this cutterhead is going to save me some money and tearout induced headache.
I
Ian Kingham
Fantastic upgrade To Dewalt DW735
This is not a cheap item but you get what you pay for and this spiral cutter head is simply amazing. I set aside 4 hours to install it and took about 2 hours - and that was taking my time. The only part of the installation that I would classify as difficult is getting the cutter head through the opening once the old cutter head is removed. The tolerances are extremely tight but with patience and gentle jiggling and twisting it can be done (DO NOT force it - just take your time). After installation is complete it’s maybe another 15-20 minutes to install the carbide inserts and torque them to 50 inch pounds. Post installation I can confirm that the other reviews you’ve seen where they say it is quieter and smoother are completely true. The wood exiting the planer requires very little sanding. I had (have) one very minor issue wherein there is a small line where the wood comes out on the left side of the planer. It is too small to see but can be felt. I removed cleaned and replaced all the carbide inserts on that side of the cutter head but the line is still there. It is insignificant enough that I likely will opt to ignore it but if it bugs me then I’ll see if maybe there is a burr on the cutter head but there are zero chips or damage to any of the carbide inserts that I can see. Regardless, if you’re thinking about purchasing and installing this cutter head on your Dewalt DW735 you should absolutely go for it. Watch a bunch of YouTube videos first and purchase snap ring pliers if you don’t already have them. Once you’re up and running you won’t regret it.
R
Rick Leonard
Spiral Cutterhead for DeWalt DW735 13" thickness Planer OEM size
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.
