Cable Minimum Bend Radius Calculator
Calculate pulling and installed bend-radius limits from cable outside diameter and manufacturer-specified multipliers.
Enter cable and drum dimensions
Use the cable manufacturer’s pulling specification.
Use the cable manufacturer’s installed bend limit.
Minimum bend radius estimate
About this calculator
Calculate pulling and installed bend-radius limits from cable outside diameter and manufacturer-specified multipliers.
The calculator does not infer allowable bend radius from cable gauge, insulation type, or trade convention.
Method and assumptions
Minimum radius = cable outside diameter × the manufacturer’s multiplier. Pulling and final installed conditions can have different multipliers, so both are entered and reported separately.
Use manufacturer dimensions and limits for the actual cable and reel. Defaults are illustrative only.
FAQs
Can the calculator choose a bend-radius multiplier?
No. The correct multiplier depends on the cable construction and installation condition. Enter the value specified by the cable manufacturer.
Does the reel estimate guarantee the cable will fit?
No. It estimates volume-based capacity using a packing factor. Actual capacity depends on winding pattern, reel geometry, flange clearance, cable deformation, and handling limits.
Sources
Use the cable manufacturer’s specifications for outside diameter and bend limits, and the reel manufacturer’s dimensional and weight ratings.