Extruded polystyrene - thermal insulation extruded polystyrene (XPS) has a closed cell structure and is strong with high mechanical performance. It has a wide variety of applications. It can be used for the insulation of buildings, roofs and concrete floors, crafts, model building, architectural models, and structural insulated panel building systems.
To surface the XPS, an array of saw blades is still widely used. Saw blades are made with welded carbide tips reheated at high temperatures and are easy to wear out. To replace a saw blade, the whole cutterhead has to be removed from the machine. Dismantling and setup take a long time. The carbide tips on the saw blade hammer board direct and often scoop off materials with the bad surface. Sheartak designed the spiral cutterhead with carbide inserts angled and seated along the helical grooves. The carbide inserts slice materials off at a part of 15mm. This leaves a better quality surface with no tear-out. The indexable carbide inserts have four cutting edges and stay sharp as 12 times long as the welded saw blades. Simply loosen the inserts, turn a quarter circle, and tighten the screws. The setup is super easy. This revolutionary upgrade increases productivity.
This spiral cutterhead is made for an XPS board extruding line. One is for top surfacing, the other is for bottom surfacing.
Specifications:
Cutting length: 1260mm
Cutting circle: 180mm
Nos of spiral: 18
Number of carbides insert: 900 pieces
Carbide size: 15x15x2.5mm R150
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.
