Maksiwa produced the heavy-duty HE.1800 14" (350 mm) jointer, built on a robust stand and designed for demanding woodworking applications, including the machining of hardwoods.
The original Maksiwa cutterhead is equipped with three straight steel knives. As a substantial performance upgrade, Sheartak designed and manufactured a helical spiral cutterhead specifically for this machine, featuring 90 carbide inserts arranged across six helical rows.
Upgrade Your Maksiwa HE.1800
The Sheartak helical cutterhead provides a significant upgrade over the original straight-knife cutterhead. Its helical shear-cutting design delivers a smoother surface finish, quieter operation, longer cutting-edge life, and reduced maintenance and downtime.
Key advantages include:
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Superior surface finish with reduced tear-out
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Lower cutting noise
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Reduced cutting forces and spindle load
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Smoother feeding with less vibration
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Improved chip evacuation and dust collection
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Excellent performance on hardwoods and difficult or figured grain
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Significantly longer cutting-edge life than conventional HSS knives
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Reduced downtime for knife sharpening and replacement
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Lower long-term operating and maintenance costs
Shear-Cut Carbide Technology
Unlike a conventional straight knife that cuts across the entire width at once, the carbide inserts on the Sheartak cutterhead are positioned at an angle to produce a true shear-cutting action.
This combination of helical positioning and shear cutting helps produce an exceptionally smooth, clean surface, even when machining highly figured hardwoods and softer woods that can be difficult to cut cleanly with conventional straight knives.
The 15 × 15 × 2.5 mm R150 round-edge carbide inserts provide a smooth, overlapping cutting action. Each insert has four usable cutting edges. If an edge eventually becomes dull or damaged, simply loosen the screw, rotate the insert 90°, and continue working with a fresh cutting edge.
There is no need to remove an entire set of knives for sharpening, and no time-consuming knife resetting or height adjustment is required.
The carbide inserts provide substantially longer cutting life than conventional HSS knives, helping reduce maintenance and machine downtime.
The cutterhead also produces shorter, thinner chips, which can improve chip evacuation and make dust extraction more efficient.
Specifications
Cutterhead material: AISI 5140 high-tensile-strength alloy steel
Carbide grade: C3++
Carbide insert size: 15 × 15 × 2.5 mm, R150 round edge
Number of carbide inserts: 90
Number of helical rows: 6
Wrench: T25 Torx
Screw size: #10-32 TPI
Kit Includes
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Sheartak helical spiral cutterhead
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All 90 carbide inserts installed
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5 extra carbide inserts
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5 extra screws
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T25 Torx wrench
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A pair of premium bearings installed
Warranty
All Sheartak cutterheads are covered by a one-year warranty from the date of purchase against manufacturing defects in materials and workmanship.
Consumable and wear items, including carbide inserts, are not covered by the warranty.
Important Compatibility Notice
Maksiwa manufactured different versions of the HE.1800 jointer under the same model number. Cutterhead dimensions and configurations may vary between machines.
Before ordering, please contact Sheartak so we can help identify the correct cutterhead for your specific Maksiwa HE.1800.
Providing photos and measurements of your existing cutterhead will help us confirm compatibility before shipment.
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.
