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The minimum limit size of hole refers to the smallest permissible diameter of holes in clearance fits, ensuring proper mechanical assembly and functionality between mating parts.
The calculator uses the formula:
Where:
Explanation: This formula calculates the smallest hole size required to maintain the specified minimum clearance with the maximum shaft size in a clearance fit.
Details: Accurate calculation of minimum hole size is crucial for proper fit and function in mechanical assemblies, ensuring adequate clearance while maintaining structural integrity and performance requirements.
Tips: Enter minimum clearance and maximum limit size of shaft in meters. Both values must be positive numbers to get valid results.
Q1: What is clearance fit in engineering?
A: Clearance fit is a type of fit where the shaft is always smaller than the hole, allowing free movement or rotation between the mating parts.
Q2: Why is minimum clearance important?
A: Minimum clearance ensures that even under worst-case tolerance conditions, there will always be some gap between the shaft and hole to prevent binding.
Q3: What units should be used for input values?
A: The calculator uses meters as the default unit, but you can use any consistent unit system as long as both inputs use the same units.
Q4: How does this relate to tolerance stacking?
A: This calculation considers the worst-case scenario in tolerance stacking where the shaft is at its maximum size and the minimum required clearance must be maintained.
Q5: Can this calculator be used for interference fits?
A: No, this calculator is specifically designed for clearance fits. Interference fits require different calculations as they involve shaft sizes larger than hole sizes.