1. What is Radial Clearance?

Radial clearance is a measured value of the total movement of one ring relative to the other in a plane perpendicular to the bearing axis. It is a critical parameter in bearing design and lubrication analysis.

2. How Does the Calculator Work?

The calculator uses the formula:

Where:

• \( c \) — Radial clearance (m)
• \( h \) — Oil film thickness at any position θ (m)
• \( \varepsilon \) — Eccentricity ratio
• \( \theta \) — Angle measured from point of minimum of oil film (rad)

Explanation: This formula calculates the radial clearance based on oil film thickness, eccentricity ratio, and angular position from the minimum film thickness point.

3. Importance of Radial Clearance Calculation

Details: Accurate radial clearance calculation is crucial for proper bearing design, lubrication analysis, and ensuring optimal performance and longevity of rotating machinery.

4. Using the Calculator

Tips: Enter oil film thickness in meters, eccentricity ratio (0-1), and angle in radians. All values must be valid (thickness > 0, eccentricity ratio between 0-1, angle ≥ 0).

5. Frequently Asked Questions (FAQ)

Q1: What is the significance of radial clearance in bearing design?
A: Radial clearance affects bearing performance, load capacity, vibration characteristics, and overall service life of the bearing.

Q2: How does eccentricity ratio affect radial clearance?
A: Higher eccentricity ratios result in reduced radial clearance at certain angular positions, affecting the oil film distribution.

Q3: What are typical values for radial clearance in bearings?
A: Radial clearance values vary depending on bearing type and size, typically ranging from micrometers to millimeters.

Q4: Can this formula be used for all types of bearings?
A: This formula is primarily used for journal bearings and similar applications where oil film thickness varies with angular position.

Q5: How accurate is this calculation method?
A: The formula provides a good approximation for radial clearance calculation, though actual values may vary based on specific bearing geometry and operating conditions.