Home
Back
Formula Used:
| From: | To: |
The bearing area between screw and nut is defined as the area of contact of one thread between one mating pair of screw and nut. This measurement is crucial for understanding the load distribution and stress characteristics in threaded fasteners.
The calculator uses the formula:
Where:
Explanation: The formula calculates the annular area between the nominal diameter and core diameter of the screw thread, representing the contact area for one complete thread engagement.
Details: Accurate calculation of bearing area is essential for determining thread strength, load capacity, stress distribution, and preventing thread failure in mechanical assemblies. It helps engineers design safe and reliable threaded connections.
Tips: Enter nominal diameter and core diameter in meters. Both values must be positive, and the nominal diameter must be greater than the core diameter. The calculator will compute the bearing area for one complete thread engagement.
Q1: Why is bearing area important in screw design?
A: Bearing area determines how load is distributed across threads, affecting the screw's strength, durability, and resistance to stripping or shearing.
Q2: How does this differ from thread engagement area?
A: This calculates the area for one complete thread, while total engagement area would multiply this by the number of engaged threads.
Q3: What units should be used for input values?
A: The calculator expects meters for both diameter inputs, but you can convert from millimeters by dividing by 1000 (e.g., 10mm = 0.01m).
Q4: Can this formula be used for both metric and imperial threads?
A: Yes, the formula is universal. Just ensure consistent units for both diameter measurements.
Q5: What if the core diameter is larger than nominal diameter?
A: This is physically impossible in standard threaded fasteners. The calculator will show an error if this condition occurs.