⚠ BETA VERSION · INTERNAL USE ONLY

Roll Diameter Calculator – Naue GmbH & Co. KG

🔒 Authorized Departments Only / Nur autorisierte Abteilungen

This tool is exclusively intended for internal use by:
Production Planning · Logistics · Product Management

Dieses Tool ist ausschließlich für den internen Gebrauch in:
Produktionsplanung · Logistik · Produktmanagement

🧪 Beta-Status

This application is in Beta. Results should be verified before operational use.
Diese Anwendung befindet sich im Beta-Stadium. Ergebnisse sind vor dem produktiven Einsatz zu überprüfen.

📊 Product Thickness Values

Pre-filled product thickness values are derived from an automated data evaluation and serve as a starting point only. They must be independently verified before use in any calculation.
Die vorgeschlagenen Produktdicken stammen aus einer automatischen Datenauswertung und müssen vor Verwendung in Berechnungen eigenständig überprüft werden.
Naue BETA Internal
Roll Diameter Calculator · Roll Diameter · Product Length · Roll Weight

✎ Roll Diameter Calculator

D d
D = Roll outer diameter
d = Core outer diameter
t = Product thickness
L = Product length

Input Parameters

mm
± mm
m
mm

Roll Weight (optional)

m
g/m²
kg
Geometry: π/4 × (D² − d²) = L × t  |  Weight: G [kg] = Area Weight [g/m²] × L [m] × Width [m] / 1000

Known Reference Roll

mm
mm
m

New Roll Length

m
± mm

Roll Weight (optional)

m
g/m²
Geometry: D₁ = √(d² + L₁/L₀ × (D₀² − d²))  |  Weight: G [kg] = Area Weight × L₁ × Width / 1000
ⓘ Calculation Notes
The calculated roll diameters assume a perfectly cylindrical roll with uniform, gap-free winding.

The product thickness can vary during production within the permitted manufacturing tolerance. The actual roll diameter may therefore differ from the calculated values.

Use the ± Tolerance field next to the product thickness to estimate this effect – the result will then show the minimum, nominal and maximum roll diameter.
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BETA
■ Naue GmbH & Co. KG  ·  Roll Diameter Calculator  ·  Internal Application