Spiral Cutterhead for Hitachi P20SF 3-1/4 inch Power Planer
Woodworkers are now retrofitting spiral cutterheads to their old planers, and jointers for the following advantages.
* Smoother Finish with no tear-out. Each knife sits at a slight angle and produces a shear cut. Spiral cutterhead planes board staggered, which is much better than a single straight cut. The combined shear and staggered cut eliminates tear-out and leaves a glossy surface finish on even highly figured hardwood.
* Noise is hugely reduced as the spiral cutterhead allows a few knives to cut in a staggered way.
* More than 10 times the life use of high-speed steel. The 15x15x2.5mm inserts are made of sintered tungsten carbide which is much harder than high-speed steel. Each insert has four edges.
* Easy to change. The knives are precision ground to a tolerance of +/-0.0004" or +/-0.01mm and are interchangeable. Loosen the screw, rotate 90° for a new edge, and tighten the insert in minutes.
* Dust extraction is easier. The spiral cutterhead produces thinner and shorter chips.
* Low cost to use. Spiral cutterheads produce a smoother finish, reduce or eliminate sanding work, and don't require sharpening, your product will pay for itself in a concise time.
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| Technical | |
| Material of Cutterblock | Alloy Steel |
| No. of Spirals | 4 |
| No. of Carbide Inserts | 14PCS |
| Carbide Insert Size | 15x15x2.5mm R150 30° |
| Screw Size | T25 10#-32TPI |
| Standard Kit | |
| No. of Additional Knives | 5 |
| No. of Additional Screws | 5 |
| No. of Wrenches | 1 |
| No. of Bearings | 2 |
