Magnum (KMS Tools) MI-99300 blades are originally made of high-speed steel, while Sheartak carbide cutters offer a superior upgrade in durability and performance. Each carbide cutting edge remains sharp up to 10× longer than standard HSS blades, significantly reducing downtime and replacement frequency.
Precision-ground to tight tolerances, these carbide inserts ensure perfect interchangeability, high-quality cuts, and an extended tool lifespan for demanding woodworking applications.
Key Features
- Premium carbide construction (C3 grade) for long-lasting performance
- Up to 10× longer edge life compared to HSS blades
- 2 cutting edges per insert – rotate when one edge becomes dull
- Precision-ground for consistent fit and smooth cutting results
- Ideal upgrade for Magnum spiral cutterhead systems
Specifications
- Size: 14.3 × 14.3 × 2.0 mm
- Bevel Angle: 40°
- Cutting Edges: 2
- Grade: C3 carbide
- Type: Reversible indexable insert knife
- Packaging: Box of 10 pieces
Compatibility
Compatible with Magnum (KMS Tools) MI-99300 insert system used on the following machines:
- Magnum MI-81180 8" Jointer
- Magnum MI-31160 13" Planer
- Magnum MI-31170 13" Planer
Applications
Suitable for hardwoods, softwoods, MDF, HDF, plywood, chipboard, and other engineered wood materials. Ideal for professional woodworking, cabinetry, and workshop use.
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.
