Sheartak Spiral Cutterhead for MINIMAX F31 12" Jointer
The Sheartak Spiral Cutterhead is designed for the MINIMAX F31 12" jointer, featuring 65 carbide cutters arranged across 5 spirals. For added convenience, the kit includes 5 extra carbide inserts and 5 replacement screws.
This cutterhead delivers a superior surface finish compared to traditional straight-edge cutterheads. The round-edged inserts are set at an angle, creating a shear-cut effect that produces an ultra-smooth finish, even on highly figured or soft woods. Each insert has four cutting edges and can be rotated up to three times for a fresh sharp edge. Say goodbye to frequent sharpening and resetting—when an insert becomes dull or nicked, simply rotate it. The durable carbide inserts last 50 times longer than HSS blades. Additionally, dust extraction is more efficient thanks to the shorter and thinner chips produced by Sheartak spiral cutterheads.
All Sheartak cutterheads are backed by a one-year warranty from the date of purchase, covering parts and protection against manufacturer defects. (Consumables are not covered.)
Specifications
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Cutterblock Material: AISI 5140 high-tensile strength alloy steel
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Insert Material: Grade C3++ carbide
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Carbide Insert Size: 15×15×2.5mm, R150
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Number of Inserts: 65
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Number of Rows: 5
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Wrench Type: Torx head T-style
Kit Includes:
- (1) T-handle Torx wrench
- (5) Spare carbide inserts
- (5) Torx screws
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.
