Sheartak Helical Spiral Cutterhead for Casadei M31 Combined Universal Machine (65 Carbide Inserts)
Upgrade your Casadei M31 Combined Universal Machine with a precision-engineered Sheartak Helical Spiral Cutterhead. Designed as a direct replacement for the original straight-knife cutterblock, this upgrade delivers dramatically improved surface quality, quieter operation, longer tool life, and lower maintenance costs.
Whether you work with hardwood, softwood, or figured timber, the Sheartak helical cutterhead produces cleaner cuts while significantly reducing tear-out.
Why Upgrade to a Sheartak Helical Cutterhead?
Superior Surface Finish
Each carbide insert is mounted at a slight shear angle, producing a true shearing cut rather than a straight impact cut. The staggered cutting pattern leaves an exceptionally smooth finish with minimal tear-out, even on highly figured or difficult hardwoods, reducing or eliminating sanding.
Quieter Operation
Unlike conventional straight knives that strike the entire width of the board simultaneously, the helical insert arrangement engages the wood progressively. This greatly reduces cutting noise and vibration, creating a more comfortable working environment.
Exceptional Tool Life
The cutterhead is equipped with 65 premium 15 × 15 × 2.5 mm solid tungsten carbide inserts. Each insert features four precision-ground cutting edges, providing more than 10 times the service life of conventional high-speed steel knives.
Quick and Simple Maintenance
Every insert is precision ground to a tolerance of ±0.0004" (±0.01 mm) and is fully interchangeable. When an edge becomes dull or damaged, simply loosen the Torx screw, rotate the insert 90°, and retighten. No knife setting or sharpening is required.
Improved Dust Collection
The helical cutting action produces smaller, thinner wood chips that are easier for dust collection systems to remove, helping improve chip evacuation and workshop cleanliness.
Lower Operating Cost
Long-lasting carbide inserts, reduced sanding, no knife sharpening, and minimal downtime combine to significantly lower operating costs while increasing productivity.
Standard Kit Includes
- Precision-machined high-tensile alloy steel helical cutterhead
- 65 pre-installed tungsten carbide inserts
- 5 spare tungsten carbide inserts
- 5 spare insert screws
- 1 Torx T-handle wrench
Compatible Machine
- Casadei M31 Combined Universal Machine
Experience smoother cuts, quieter operation, and the long-term reliability that professional woodworkers have come to expect from Sheartak Helical Cutterheads.
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.
