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Engineering Calculator · 001

Cable OD Tolerance Calculator

Calculate the minimum and maximum cable outside diameter from a nominal OD and asymmetric manufacturing tolerance.

Cable dimensions
Start calculationReview the method

Live calculation

Enter the known values.

Units remain visible beside every field and result. Change any input to recalculate immediately in your browser.

01

Inputs

02

Results

Minimum cable OD17.5mm
Maximum cable OD18.5mm
Total OD span1mm

Formula
Dmin⁡=Dnom−T−D_{\min}=D_{\mathrm{nom}}-T_{-}Dmax⁡=Dnom+T+D_{\max}=D_{\mathrm{nom}}+T_{+}

The calculation runs locally in this browser. Values are not submitted or stored by this tool.

Direct answer

What this result means

Cable OD limits are the nominal outside diameter plus the stated upper tolerance and minus the stated lower tolerance. Compare both limits—not only the nominal value—with the declared sealing range of the exact cable-gland model.

Cable OD Tolerance Calculator engineering relationship diagramThe calculation preserves asymmetric tolerance. The total possible OD span is the sum of the positive and negative tolerance magnitudes. This dedicated schematic represents od tolerance band and is not to scale.CABLE DIAMETER LIMITS · TOOL 001Nominal cable ODMinimum cable OD
Calculator-specific engineering relationship diagram — schematic, not a product drawing, and not to scale.

Formula & theory

Make the assumptions visible.

The calculation preserves asymmetric tolerance. The total possible OD span is the sum of the positive and negative tolerance magnitudes.

Calculation relationship
Dmin⁡=Dnom−T−D_{\min}=D_{\mathrm{nom}}-T_{-}Dmax⁡=Dnom+T+D_{\max}=D_{\mathrm{nom}}+T_{+}

The calculation preserves asymmetric tolerance. The total possible OD span is the sum of the positive and negative tolerance magnitudes.

Variables

Dmin / DmaxCalculated cable OD limitsmm

Use sequence

From measurement to review

  1. Read nominal OD and both tolerances from the cable drawing or datasheet.
  2. Calculate the complete OD interval without averaging the tolerance.
  3. Compare Dmin and Dmax with the exact gland sealing range and installation instructions.

Limits

What this calculation does not confirm

  • Tolerance values are entered as positive magnitudes.
  • The calculation does not account for ovality, local sheath ribs or measurement compression.
  • A gland is not confirmed suitable until the complete cable construction and product data are reviewed.

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Calculator FAQ

Use the number without losing the engineering context.

These answers clarify what the tool calculates and where a product-specific review still begins.

01Calculator guidanceHow does the cable OD tolerance calculator apply the upper and lower linear-size limits?

The tool applies the upper and lower linear-size limits. It keeps the entered values, units and assumptions visible so the result can be checked or repeated.

02Calculator guidanceWhat engineering review can the cable OD tolerance calculator support?

It supports a preliminary review based on the upper and lower linear-size limits. It does not select a final cable-gland model or confirm standards compliance, ingress performance or installation approval.

03Calculator guidanceWhy must the cable drawing revision be checked before using the cable OD tolerance calculator result?

Verify the cable drawing revision, measurement method, local ovality and the exact gland model’s declared sealing range.

Product selection support

Connect the calculation with cable-entry product options.

Bepto Cable Glands can help relate a preliminary result to the product family and current model information for your application. You can start with the details you have; a complete drawing package is not needed to ask a question.

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