Welcome!
Register
::
Login
Home
About Us
Discussion Forum
Machine Info
Photo Index
Buy & Sell
Tools
Support Vintage Machinery
Home Page
Mission
Submitting Content
VintageMachinery.org Support
Contact Us
Discussion Forum
Wiki/Knowledge Base
Discussion FAQ
The Shop
Projects Forum
For Sale Forum
SWARF
VintageMachinery.org Support
OWWM.org Support
Manufacturer's Index
Machine Registry
Publication Reprints
Wiki/Knowledge Base
Photo Index Home
Index by Manufacturer
Index by Machine Type
Recent Submissions
Submit New Photo
Classified Ads
Vintage Machinery Store
Workshop Calculations
Patent Search
Book Store
Member Profiles
Donations
Vintage Machinery Store
Calendars
Amazon.com
Highland Woodworking
Search
Workshop Calculations
Arbor RPM
To calculate arbor RPM, enter the values from your machine in the boxes below:
Back to Workshop Calculation Links
Motor Speed (RPM)
Motor Pulley Dia. (in.)*
Cutter Pulley Dia. (in.)*
Calculated Arbor RPM:
3,450
* Measure the outside diameters of pulleys.
Use Decimal Equivalents for Fractions:
Fraction
Decimal
Fraction
Decimal
Fraction
Decimal
Fraction
Decimal
1/16
0.0625
5/16
0.3125
9/16
0.5625
13/16
0.8125
1/8
0.1250
1/3
0.3333
5/8
0.6250
5/6
0.8330
1/6
0.1667
3/8
0.3750
2/3
0.6670
7/8
0.8750
3/16
0.1875
7/16
0.4375
11/16
0.6875
15/16
0.9375
1/4
0.2500
1/2
0.5000
3/4
0.7500
1
1.0000