Radial Distance from Gasket Load Reaction to Bolt Circle Calculator

Radial Distance Formula:

\[ hG = \frac{B - G}{2} \]

Radial Distance (hG):

1. What is Radial Distance from Gasket Load Reaction to Bolt Circle?

Definition: Radial Distance is defined as the distance between the gasket load reaction point and the bolt circle in a flanged joint assembly.

Purpose: This measurement is crucial in flange design to ensure proper load distribution and gasket sealing performance.

2. How Does the Calculator Work?

The calculator uses the formula:

\[ hG = \frac{B - G}{2} \]

Where:

\( hG \) — Radial Distance (meters)
\( B \) — Bolt Circle Diameter (meters)
\( G \) — Diameter of Gasket at Load Reaction (meters)

Explanation: The difference between bolt circle diameter and gasket diameter is divided by 2 to get the radial distance.

3. Importance of Radial Distance Calculation

Details: Proper radial distance calculation ensures correct bolt spacing, optimal gasket compression, and prevents flange leakage in pressurized systems.

4. Using the Calculator

Tips: Enter the Bolt Circle Diameter (B) and Gasket Diameter (G) in meters. Both values must be > 0 and B must be greater than G. Results include ±5% tolerance.

5. Frequently Asked Questions (FAQ)

Q1: Why is radial distance important in flange design?
A: It determines the moment arm for bolt loads and affects gasket compression uniformity.

Q2: What does the ±5% tolerance represent?
A: This accounts for manufacturing tolerances and installation variations in real-world applications.

Q3: How does gasket diameter affect the radial distance?
A: Larger gasket diameters result in smaller radial distances, which may require more bolts to maintain proper sealing pressure.

Q4: When would I need to calculate this radial distance?
A: During flange design, gasket selection, or when troubleshooting flange leakage issues.

Q5: What's a typical value for this radial distance?
A: It varies by flange class and size, but typically ranges from 10mm to 100mm in standard flanges.