*AstraHP Coated* Bits&Bits 440-SRB250 – 1/4″ Extra Long Ball End Mill
$63.99
- AstraHP Coated
- Solid Carbide
- Tip Diameter: 1/4″
- Shank: 1/4″
- Overall Length: 4″
- Cut Length: 2″
- Up-cut
- Formerly XLB14-420C
- Made In USA
In stock
What is a Ball Nose End Mill?
Ball nose end mills, also known as full radius end mills or ball mills, are cutting tools where the nose radius is equal to half of the diameter of the tool. This creates a constant single radius (or ball) at the tool end with no straight edge (sharp corners) in the profile. They are used for contour milling, shallow slotting, pocketing and contouring applications. Ball nose mills are ideal for 3D contouring because they are less prone to chipping and leave a nice rounded edge.
Tip: Use a Roughing end mill first to remove large areas of material then proceed with a ball nose end mill.
Made in the USA by Bits & Bits.
This data serves as a general guidance only. These are conservative speeds and feeds due to the cut length on these tools.
Soft Woods/ Hard Woods
RPM: 16,000
IPM : 30-40″
Cut depth per pass: 1/4″
| Weight | 0.15 lbs |
|---|---|
| Shank | 1/4" |
| Cut Diameter | 1/4" (.25") |
| Cut Length | 2" |
| Cut Style | Ball Nose (Up-Cut) |
Be the first to review “*AstraHP Coated* Bits&Bits 440-SRB250 – 1/4″ Extra Long Ball End Mill”
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.Related products
1/4" Shank Spiral Bits
*Astra Coated* Bits&Bits SRF43-250GP – 1/4″ General Purpose 3 Flute End Mill
$38.50
1/4" Shank Spiral Bits
*AstraHP Coated* Bits&Bits 425-CM125 – 1/8″ Spiral Compression Bit – 1/4″ Shank
$49.99
1/4" Shank Spiral Bits
*AstraHP Coated* Bits&Bits 425-UP062 – 1/16″ ‘O’ Flute Up-Cut Spiral Bit – 1/4″ Shank
$38.99
Reviews
There are no reviews yet.