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ENEnglish繁中繁體中文ESEspañolARالعربيةFRFrançaisITItalianoPTPortuguêsRUРусскийDEDeutschJA日本語VITiếng ViệtKO한국어THไทยTRTürkçe

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Engineering Calculator · 010

Cable Bend Radius Calculator

Calculate minimum bend radius, bend diameter and entry routing envelope from cable OD and a specified bend factor.

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 bend radius144mm
Minimum bend diameter288mm
One-sided routing envelope194mm

Formula
Rmin⁡=FDR_{\min}=F DDbend=2Rmin⁡D_{\mathrm{bend}}=2R_{\min}

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

Direct answer

What this result means

Minimum bend radius is commonly expressed as a specified factor multiplied by cable OD. Enter the factor from the cable manufacturer or applicable installation rule. The calculator must not choose a universal factor because armour, shielding and cable construction change the limit.

Cable Bend Radius Calculator engineering relationship diagramThe optional straight allowance is added to the radius to estimate a one-sided routing envelope from the entry face. It is not a substitute for enclosure-layout review. This dedicated schematic represents minimum bend radius and is not to scale.CABLE ROUTING CLEARANCE · TOOL 010Cable outside diameterMinimum bend radius
Calculator-specific engineering relationship diagram — schematic, not a product drawing, and not to scale.

Formula & theory

Make the assumptions visible.

The optional straight allowance is added to the radius to estimate a one-sided routing envelope from the entry face. It is not a substitute for enclosure-layout review.

Calculation relationship
Rmin⁡=FDR_{\min}=F DDbend=2Rmin⁡D_{\mathrm{bend}}=2R_{\min}

The optional straight allowance is added to the radius to estimate a one-sided routing envelope from the entry face. It is not a substitute for enclosure-layout review.

Variables

Use sequence

From measurement to review

  1. Obtain cable OD and the correct bend factor for its construction and installation state.
  2. Calculate radius and diameter using consistent units.
  3. Check the available enclosure space and keep the bend outside the gland sealing and clamping zone.

Limits

What this calculation does not confirm

  • The bend factor is supplied by an authoritative cable document; the default is an example input.
  • The cable is routed in a smooth arc without local kinks.
  • Pulling tension, sidewall pressure and dynamic flexing require separate checks.

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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 bend radius calculator apply the specified bending factor multiplied by cable OD?

The tool applies the specified bending factor multiplied by cable OD. It keeps the entered values, units and assumptions visible so the result can be checked or repeated.

02Calculator guidanceWhat engineering review can the cable bend radius calculator support?

It supports a preliminary review based on the specified bending factor multiplied by cable OD. It does not select a final cable-gland model or confirm standards compliance, ingress performance or installation approval.

03Calculator guidanceWhy must cable construction be checked before using the cable bend radius calculator result?

Verify cable construction, whether the limit applies during installation or final service, and the cable manufacturer’s current document.

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.

Request product support