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UP Cut Spiral Router Bits
Up-cut spiral router bits are engineered with a standard right-hand cutting, right-hand spiral geometry. Functioning similarly to a mechanical drill bit, the aggressive spiral flutes actively draw wood chips, dust, and heat upward and out of the cutting zone during high-speed rotation. This continuous upward shearing action makes the up-cut bit the most efficient solid carbide tool for vertical chip evacuation. It is the definitive tooling choice for operations requiring deep blind slotting, heavy material removal, and high-feed roughing where preventing heat buildup from packed chips is a critical engineering requirement.
Target Operations: Deep blind slotting, mortising, heavy-duty profiling, high-speed roughing, and aluminum extrusion routing.
Target Materials: Solid hardwoods, softwoods, raw MDF (unlaminated), thick acrylics, engineering plastics, and non-ferrous metals.
Tool Selection Note: If your application involves routing delicate double-sided veneers, melamine, or if you are experiencing unwanted top-edge tear-out, please explore our [Down-Cut Spiral Router Bits].
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Description
Technical Features & Advantages
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Maximum Chip Evacuation
The aggressive upward spiral geometry prevents waste material from re-cutting or packing within deep slots. This efficient clearing process drastically reduces friction, lowers tooling temperatures, and significantly extends the carbide's cutting lifespan.
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Flawless Bottom Edge Finish
Because the cutting force shears the material in an upward direction, up-cut bits leave a remarkably clean, smooth finish on the bottom surface of the workpiece during through-cuts, requiring zero secondary sanding on that face.
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High Feed Rate Compatibility
The superior cooling and chip removal capabilities inherent to the up-cut design allow CNC operators to program significantly faster feed rates compared to straight or down-cut router bits, maximizing overall production efficiency.
Working Principle of Up-Cut Spiral Geometry
Specification:
Below are some commonly used dimensions for reference. If you require other specifications or custom shapes, please feel free to contact us.
| Item Code | Outside Diameter | Flute Length | Overall Length | Shank Diameter |
|---|---|---|---|---|
| WU-1-0312 | 3 | 12 | 38 | 3 |
| WU-1-D317 | 3.175 | 17 | 38 | 3.175 |
| WU-1-0422 | 4 | 22 | 50 | 4 |
| WU-1-0525 | 5 | 25 | 50 | 5 |
| WU-1-0632 | 6 | 32 | 60 | 6 |
| WU-1-D642 | 6.35 | 42 | 76 | 6.35 |
| WU-1-D732 | 7.9 | 32 | 60 | 7.9 |
| WU-1-0842 | 8 | 42 | 70 | 8 |
| WU-1-D962 | 9.525 | 62 | 101 | 9.525 |
| WU-1-10100 | 10 | 100 | 150 | 10 |
| WU-1-1280 | 12 | 80 | 120 | 12 |
| WU-1-D1255 | 12.7 | 55 | 101 | 12.7 |
| WU-2-0328 | 3 | 28 | 50 | 3 |
| WU-2-D328 | 3.175 | 28 | 50 | 3.175 |
| WU-2-0425 | 4 | 25 | 50 | 4 |
| WU-2-D625 | 6.35 | 25 | 60 | 6.35 |
| WU-2-0862 | 8 | 52 | 80 | 8 |
| WU-2-10100 | 10 | 100 | 150 | 10 |
| WU-2-D1262 | 12.7 | 62 | 115 | 12.7 |
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we have multi top class production lines which help us to offer better performance tools and extend the range of our products.
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Every year, we spend a lot of money upgrading and maintaining our equipment.
I stock
We have an ample supply of goods in stock.
Team
We follow standard procedures and have an excellent team of designers.
OEM
We have many years of leading OEM and ODM manufacturing experience in this field.
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Receiving goods as fast as 3 days around the world.
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FAQ
Most frequent questions and answers
A: This is the mechanical reality of the up-cut geometry. The spiral flutes pull the wood fibers and brittle surface coatings upward, causing tear-out on the top face. Up-cut bits are designed for raw solid wood, plastics, or deep mortising where the top-edge finish is secondary. For a flawless top surface, you must switch to a [Down-Cut Router Bit], and for double-sided laminates, a [Compression Router Bit] is strictly required.
A: Yes, highly suitable. Because the up-cut geometry actively pulls chips up and out of the hole, it functions similarly to a standard drill bit. This prevents waste material from being trapped under the cutting tip, making it the safest and most efficient spiral bit for deep vertical plunging. However, utilizing a ramping toolpath (entering at an angle) is still recommended by our engineers to reduce the initial mechanical shock on the carbide tip.
Wuxi Sundi Precision Tools Co.,LTD
- +86 18168312921
- +86 18168312921
- +86 18951588639
- info@sundicuttingtools.com
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