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*AstraHP Coated* Bits&Bits 425-SRF250CB – 1/4″ Up-Cut Chipbreaker
$40.99
A must have in any shop, the 1/4″ up-cut chip breaker helps your dust extractor remove chips quicker from the cut path and lessens the load on the router/spindle.
- AstraHP Coated
- Solid Carbide
- Tip diameter: 1/4″
- Shank Diameter: 1/4″
- Length of cut: 1″
- Overall Length 2-1/2″
- Previously SRF4-250UP
- Made In USA
In stock
| How much is shipping? |
Shipping to OR. |
|---|
SKU: 425-SRF250CB Categories: 1/4 Inch End Mills, 1/4" Shank Spiral Bits, Spiral Router Bits, Spiral Upcut Router Bits, Chip Breaker Bits Tag: AstraHP Coated
Solid Carbide upcut bit used for carving and sign making on hard & soft woods. Excellent for milling wood, aluminum and other non-ferrous materials. These tools are coated with a proprietary high performance *Astra coating* that allows higher speed & feed rates as well as extended tool life & increased lubricity in abrasive material. Our tools are all Made in the USA with the finest carbide available.
How Chipbreaker Bits Work:
Chipbreaker bits feature unique notch profiles, creating a serrated cutting edge, these notches break down chips into small, manageable pieces during the machining process. This type of geometry can boost your efficiency by minimizing machine downtime to clear large chips from the workpiece, improve bit life by minimizing the cutting force on the bit during machining, and allow for more accelerated speeds and feeds.
As a chipbreaker bit rotates and its cutting edge impacts the workpiece, material is sheared off from a part, creating chips. When that cutting process is interrupted, as is the case with chipbreakers in the cutting portion of the bit, chips become smaller in length and are easier to evacuate. Because the chipbreaker notches are offset flute-to-flute, a proper, flat surface finish is achieved as each flute cleans up any excess material left behind from previously passed flutes.
What is an UpCut bit?
UpCut bits allow for rapid cuts since the tool clears the chips away from the material. While Ideal for cutting thicker materials, this type of tool is not recommended for thinner or softer materials. They are more likely to tear the top surface with the cutting edges because they’re pulling the wood fibers up while cutting. When cutting laminated materials, such as plywood with a thin top veneer, that can matter a lot. This type of bit is used whenever the best finish is needed on the bottom side of a part.
Made in the USA by Bits & Bits.
| Weight | 0.07 lbs |
|---|---|
| Brand | Bits & Bits |
| Shank | 1/4" |
| Cut Diameter | 1/4" (.25") |
| Cut Length | 1" |
| Cut Style | Up Cut |
| Overall Length | 2-1/2" |
Speeds & Feeds
This data serves as a general guidance only.
Soft/Hard Woods/ MDF – Spindle Speed- RPM: 16-18K – Feed Rate – IPM : 150-180″
Plastics / Aluminum – Spindle Speed- RPM: 16-18K – Feed Rate – IPM : 120-150″
Max Cut depth per pass 1/4″
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New, unused in-stock tools may be returned within 30 days of delivery for a full refund. Made-to-order tools such as engraving cutters with custom tip sizes are subject to a 20% restock fee if returned. The buyer is responsible for return shipping costs unless the return is the result of our error (i.e. you received an incorrect or defective item). Beyond 30 days, we reserve the right to offer refunds or store credit at our discretion, with the exception of warranty related requests. You can also exchange any unused item for one of our other tools. You will be responsible for shipping charges on any exchanges unless in error on our part.If your order arrives damaged in any way, please email us as soon as possible at [email protected] with your order number and a photo of the condition.
For more information, see our Returns and Refunds page.
For more information see our returns and refunds page..
Defective Items
We are committed to ensuring all of our products are of high quality and will replace or refund items that we determine to be defective. In the event you believe you have a defective tool, please call us or email us at [email protected]. Include your order number and as much info as you can about your setup, i.e., CNC, router, speeds and feeds, material you’re cutting, etc. In most cases of what seemed to be a defective tool, we have been able to help a customer with proper settings or techniques for efficient use.
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