5 months by cncdivi
Awesome! This page offers two Free Online Speeds and Feeds Calculators.
Use Cutting Speeds And Feeds Calculator with simple shop formulas and access a full-featured, industry-leading calculator (free for a limited time). Thousands of top manufacturers rely on it daily.
They trust the software because it saves them time and money.
Why use the basic free calculator when you can try our full-featured G-Wizard Feeds and Speeds Calculator free for 30 days? Get it now.
It takes only 37 seconds to download and start using G-Wizard. It?s free for 30 days, providing excellent feeds and speeds. After that, you can switch back to our free online calculator if you prefer.
Make the most of the high-performance model while it?s free!
Click on the Version of G-Wizard Best Suited to Your Needs:
Or, use our simple online cutting feeds and speeds calculator below:
Easy Speeds And Feeds
Spindle Speed Calculator
Tool Diameter
inches
Surface Speed / Cutting Speed:
SFM (see table below for SFM values).
To learn what is SFM and how to go from SFM to RPM, click this link.
Spindle Speed:
RPM
Spindle RPM Formula = (12 * SurfaceSpeed) / (PI * CutterDiameter)
Feed Rate Calculator
Feed/Tooth (Chipload):
IPT (inches / tooth)
Number of Flutes (Teeth):
Feed Rate:
IPM (inches / minute)
Feed Rate Formula = Chipload * NumberFlutes * RPM
Milling Surface Speeds for HSS End Mills
|
|
Material
|
Surface Speed (SFM)
|
Aluminum - Wrought (6061) | 250 |
Brass | 200 |
Cast Iron - Ductile | 90 |
Cast Iron - Gray | 100 |
Copper Alloy - Wrought | 120 |
Magnesium Alloy | 250 |
Stainless Steel | 30 |
Steel - Mild | 110 |
Steel - Hard Alloy | 60 |
Steel - Tool | 60 |
Wood - Hardwood (For more wood see linked article) | 500 |
Drilling Surface Speeds for HSS Twist Drills
|
|
Material
|
Surface Speed (SFM)
|
Aluminum - Wrought (6061) | 250 |
Brass | 200 |
Cast Iron - Ductile | 80 |
Cast Iron - Gray | 120 |
Copper Alloy - Wrought | 70 |
Magnesium Alloy | 250 |
Stainless Steel | 30 |
Steel - Mild | 110 |
Steel - Hard Alloy | 60 |
Steel - Tool | 60 |
Milling Chiploads for HSS End Mills
|
|
Material
|
Chipload (IPT)
|
Aluminum - Wrought (6061) | 0.005 - 0.010 |
Brass | 0.005 - 0.010 |
Cast Iron - Ductile | 0.004 - 0.008 |
Cast Iron - Gray | 0.002 - 0.006 |
Copper Alloy - Wrought | 0.004 - 0.008 |
Magnesium Alloy | 0.005 - 0.010 |
Stainless Steel | 0.002 - 0.006 |
Steel - Mild | 0.002 - 0.010 |
Steel - Hard Alloy | 0.002 - 0.006 |
Steel - Tool | 0.002 - 0.006 |
Note: Chipload should be adjusted for tool diameter. Smaller tools tolerate much lower chip loads! You can look this up in the manufacturer's catalog, or we can help. |
Hang on: You Deserve Better!
Software that makes anyone a better CNC'er... Even beginners:
Better Tool Life, Surface Finish, and MRR with G-Wizard
It took years, we analyzed data from over 250 tooling catalogs,
we built a powerful cutting physics engine
with advanced algorithms that consider
almost 60 different variables, and we
worked with over 50,000 CNC'ers
like yourself to make sure you'd
have the Best Feeds and Speeds.
Improve My Feeds and Speeds For
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