1. What is Reel Capacity?

Reel capacity refers to the total surface area available on a cable reel for winding cable or wire. It's determined by the reel's physical dimensions: outer diameter, inner diameter (barrel diameter), and width.

2. How Does the Calculator Work?

The calculator uses the reel capacity formula:

Where:

• \( D \) — Outer diameter of the reel (m)
• \( d \) — Inner diameter (barrel diameter) of the reel (m)
• \( W \) — Width of the reel (m)
• \( \pi \) — Mathematical constant (~3.14159)

Explanation: The formula calculates the annular area between the outer and inner diameters, then multiplies by the reel width to get the total surface area.

3. Importance of Reel Capacity Calculation

Details: Accurate reel capacity calculation helps in determining how much cable can be wound on a reel, preventing overfilling and ensuring proper cable storage and transportation.

4. Using the Calculator

Tips: Enter all dimensions in meters. Outer diameter must be greater than inner diameter. All values must be positive numbers.

5. Frequently Asked Questions (FAQ)

Q1: What units should I use for measurements?
A: The calculator uses meters for all dimensions. Convert from other units before entering values if necessary.

Q2: Can I calculate capacity for partial reels?
A: This calculator gives total capacity. For partial fills, you would need to know the current outer diameter of the cable pack.

Q3: How does cable diameter affect actual capacity?
A: The actual cable length depends on packing efficiency (typically ~90% for round cables). This calculator gives geometric capacity.

Q4: What if my reel has flanges?
A: The width measurement should be between the flanges. Flange diameter doesn't affect capacity calculation.

Q5: Can this be used for non-cable materials?
A: Yes, the formula works for any material wound on a reel (wire, hose, etc.), as long as the dimensions are known.