Maximum Clearance Calculator

Maximum Clearance Formula:

\[ C_{max} = H_{max} - S_{min} \]

Maximum Clearance:

1. What is Maximum Clearance?

Definition: Maximum clearance is the maximum space available between a hole and a shaft or between two assembled parts.

Purpose: It helps engineers and designers determine the loosest fit between mating parts in mechanical assemblies.

2. How Does the Calculator Work?

The calculator uses the formula:

\[ C_{max} = H_{max} - S_{min} \]

Where:

\( C_{max} \) — Maximum clearance
\( H_{max} \) — Maximum limit size of hole
\( S_{min} \) — Minimum limit size of shaft

Explanation: The maximum clearance is simply the difference between the largest possible hole size and the smallest possible shaft size in a clearance fit.

3. Importance of Maximum Clearance Calculation

Details: Proper clearance calculation ensures proper fit between parts, prevents binding, and allows for necessary movement or lubrication.

4. Using the Calculator

Tips: Enter the maximum hole size and minimum shaft size. Both values must be > 0. The ±5% indicates typical manufacturing tolerances.

5. Frequently Asked Questions (FAQ)

Q1: What units should I use?
A: The calculator works with any consistent units (mm, inches, etc.), but all inputs must be in the same units.

Q2: What does ±5% mean?
A: This represents typical manufacturing tolerances for hole and shaft sizes.

Q3: When would I need to calculate maximum clearance?
A: When designing parts that need to fit together with specific clearance requirements, such as bearings, pistons, or rotating assemblies.

Q4: What's the difference between maximum and minimum clearance?
A: Minimum clearance would be calculated using minimum hole size and maximum shaft size.

Q5: How does this relate to fit types?
A: This calculation is specifically for clearance fits. Interference fits would produce negative values.