1. What is a Tubing Bend Radius Calculator?

Definition: This calculator estimates the minimum bend radius for tubing based on the die opening size.

Purpose: It helps metalworkers, plumbers, and fabricators determine the tightest safe bend for tubing without causing deformation or weakening.

2. How Does the Calculator Work?

The calculator uses the formula:

Where:

• \( R \) — Minimum bend radius (inches)
• \( V \) — Die opening (inches)

Explanation: The die opening is divided by 8 to determine the minimum radius that will allow the tubing to bend without kinking or collapsing.

3. Importance of Bend Radius Calculation

Details: Proper bend radius ensures tubing maintains structural integrity, flow characteristics, and prevents material fatigue or failure.

4. Using the Calculator

Tips: Enter the die opening size in inches. The value must be greater than 0.

5. Frequently Asked Questions (FAQ)

Q1: Why divide by 8?
A: This is an industry standard ratio that accounts for material properties and maintains tubing integrity during bending.

Q2: Does this work for all tubing materials?
A: This is a general rule for most metals. Some materials may require larger ratios (e.g., 10 for harder metals).

Q3: What if I need a tighter bend?
A: Consider using a mandrel bender or specialized bending techniques, but consult material specifications first.

Q4: How do I measure die opening?
A: Measure the width of the die channel where the tubing sits during bending.

Q5: Does wall thickness affect bend radius?
A: Yes, thicker walls generally require larger bend radii. This calculator provides a minimum baseline.