Upgrade your Acraturn machinery with Sheartak's precision-engineered spiral cutterhead solutions. Designed specifically for Acraturn jointers and planers, our advanced cutter head technology transforms your woodworking tools into high-performance systems that deliver exceptional results with every cut.
Each Acraturn spiral cutterhead features premium carbide inserts positioned at optimal shear angles along helical grooves. This mechanical component design produces a true shear-cut that eliminates tear-out and delivers glassy-smooth finishes on all wood types, including highly figured hardwoods. Manufactured by Sheartak Tools Ltd. to exacting standards, every cutter head ensures seamless compatibility with your Acraturn equipment.
Advanced Mechanical Component Engineering
The Acraturn spiral cutterhead represents a significant advancement over traditional straight-knife systems. The staggered cutting pattern of our mechanical component design dramatically reduces operational noise while delivering superior surface quality. Each carbide insert provides four precision-ground cutting edges, offering more than 10 times the lifespan of conventional high-speed steel blades.
When a cutting edge dulls on your cutter head, maintenance becomes remarkably simple. Just loosen the screw, rotate the insert 90 degrees to expose a fresh edge, and resume work within minutes—no blade removal, no sharpening equipment, no downtime. This practical design makes these woodworking tools incredibly cost-effective for professional shops.
Professional-Grade Woodworking Tools
Sheartak Tools Ltd. manufactures every Acraturn spiral cutterhead using high-tensile strength alloy steel bodies paired with sintered tungsten carbide inserts. Each mechanical component is precision-ground to tolerances of ±0.0004" (±0.01mm), ensuring consistent cutting performance across thousands of board feet. The advanced cutter head design produces thinner, shorter chips that significantly improve dust extraction efficiency.
Whether you're retrofitting an existing Acraturn jointer or upgrading your planer, our spiral cutterhead collection delivers the reliability and performance that serious woodworkers demand. These woodworking tools reduce maintenance requirements while elevating cut quality to professional standards.
Join the growing community of craftsmen who have discovered the advantages of upgrading their Acraturn machines with Sheartak spiral cutterhead technology. Experience quieter operation, superior surface finishes, and dramatically reduced maintenance—all while achieving the flawless results your craftsmanship deserves.
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.
