The Beaver JP-3800 jointer-planer was produced by Gallander Foundry & Mag. Co. Ltd. in Guelph, Canada and boasts a sturdy construction that eliminates vibration. Even by modern standards, its sleek design is visually pleasing, and thousands of users still rely on it. We make this spiral cutterhead to upgrade the Beaver JP-3800 jointer planer, allowing loyal customers to take advantage of the benefits of spiral cutting technology, which include:
* Superior finish quality with no tear-out. The inserts on the cutterhead are angled in a staggered manner, allowing for shear-cut effects on even the most highly figured hardwood.
* Reduced noise due to the constant contact of the spiral cutterhead with the board, which only requires a few knives.
* All cutters are made from solid tungsten carbide, which is harder and stays sharp longer than high-speed steel blades. If one edge becomes chipped or dull, simply rotate it 90° for a fresh, sharp edge. Each insert has four cutting edges and can be used four times.
* Easy setup with precision-ground, interchangeable carbide inserts that can be positioned using the taper hole style locking mechanism. Loosen the screws, rotate 90°, and tighten the inserts in minutes.
* Smaller carbide inserts remove shorter and thinner materials, making dust extraction much simpler.
* Spiral cutterheads are more cost-effective in the long run and can pay for themselves quickly.
Spiral Cutterhead Kit includes:
* High tensile strength alloy steel cutter block.
* 30 carbide inserts to be installed.
* 5 extra carbide inserts & 5 extra screws free as spare parts.
* 2 Timken cups pressed inside ready to accept the cones on the pins.
Replace the cutterhead is easy.
The cutterhead removal is as follows:
1. Loosen the two set screws on top of the bearing trunnions (pins) with an Allen key.
2. Loosen the trunnion adjustment screws with a large flat headed screwdriver.
3. Turn machine upside down and remove the front trunnion adjustment pin fully with large flatheaded screwdriver and remove front trunnion.
4. Remove cutterhead and belt.
5. Reverse steps to install new cutterhead.
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.
