Surface Speed Formula:
From: | To: |
Definition: This calculator determines the surface speed of a rotating shaft in feet per minute (fpm) based on its diameter and rotational speed.
Purpose: It helps engineers and technicians ensure proper operating speeds for shafts in machinery, preventing excessive wear or vibration.
The calculator uses the formula:
Where:
Explanation: The formula converts the linear distance traveled by a point on the shaft's surface in one minute from inches to feet.
Details: Proper surface speed calculation ensures optimal performance, prevents overheating, and extends component life in rotating machinery.
Tips: Enter the shaft diameter in inches and the rotational speed in RPM. Both values must be > 0.
Q1: Why is surface speed important?
A: Surface speed affects wear rates, heat generation, and vibration characteristics of rotating components.
Q2: What's a typical surface speed range?
A: Depending on application, typical ranges are 100-500 fpm for slow shafts, up to 6000+ fpm for high-speed applications.
Q3: How does diameter affect surface speed?
A: At the same RPM, larger diameters produce higher surface speeds. Doubling the diameter doubles the surface speed.
Q4: Can I use this for pulleys or gears?
A: Yes, the same calculation applies to any rotating cylindrical component.
Q5: What units does this calculator use?
A: Diameter in inches, RPM in revolutions per minute, result in feet per minute (fpm).