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ENEnglish繁中繁體中文ESEspañolARالعربيةFRFrançaisITItalianoPTPortuguêsRUРусскийDEDeutschJA日本語VITiếng ViệtKO한국어THไทยTRTürkçe

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Engineering Calculator · 045

Torque to Clamp Force Calculator

Estimate ideal fastener clamp force from torque, nominal diameter and an explicitly entered nut factor.

Mechanical loads
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

Estimated clamp force1,250N
Nominal diameter20mm
Entered nut factor0.2—

Formula
Fclamp,est=τKndnF_{\mathrm{clamp,est}}=\frac{\tau}{K_nd_n}

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

Direct answer

What this result means

Estimate ideal fastener clamp force from torque, nominal diameter and an explicitly entered nut factor. The relationship F = τ / (Kd) ties applied torque, entered nut factor and nominal diameter directly to the reported result. The entered nut factor represents the complete friction condition. Treat the value as a transparent preliminary calculation, then compare it with the actual cable-entry assembly and current product documentation.

Torque to Clamp Force Calculator engineering relationship diagramF = τ / (Kd) defines the calculation shown here. The entered nut factor represents the complete friction condition. Keep the entered units with the result so another reviewer can reproduce the method. This dedicated schematic represents torque to clamp force and is not to scale.PRELOAD ESTIMATE · TOOL 045Applied torqueEstimated clamp force
Calculator-specific engineering relationship diagram — schematic, not a product drawing, and not to scale.

Formula & theory

Make the assumptions visible.

F = τ / (Kd) defines the calculation shown here. The entered nut factor represents the complete friction condition. Keep the entered units with the result so another reviewer can reproduce the method.

Calculation relationship
Fclamp,est=τKndnF_{\mathrm{clamp,est}}=\frac{\tau}{K_nd_n}

F = τ / (Kd) defines the calculation shown here. The entered nut factor represents the complete friction condition. Keep the entered units with the result so another reviewer can reproduce the method.

Variables

dNominal diametermm

Use sequence

From measurement to review

  1. Confirm applied torque and entered nut factor from a controlled drawing, measurement or project document.
  2. Apply F = τ / (Kd) with consistent units and keep the entered values beside the result.
  3. Use estimated clamp force only after checking the nut-factor source, lubrication, material pair, geometry and whether this simplified model is permitted.

Limits

What this calculation does not confirm

  • The entered nut factor represents the complete friction condition.
  • Inputs describe one defined operating or measurement condition and use mutually consistent units.
  • The result does not by itself confirm product suitability, standards compliance, ingress performance or installation approval.

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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 torque to clamp force calculator calculate estimated clamp force?

The tool applies F = τ / (Kd) to applied torque, entered nut factor, nominal diameter. The entered nut factor represents the complete friction condition. Keep the displayed units with the result so the calculation can be repeated.

02Calculator guidanceWhat does estimated clamp force show for this preload estimate review?

Estimate ideal fastener clamp force from torque, nominal diameter and an explicitly entered nut factor. It is a preliminary engineering value, not confirmation of a cable-gland model, standards compliance or installation approval.

03Calculator guidanceWhat should be checked about the nut-factor source before using the torque to clamp force calculator result?

The equation does not model the nut-factor source, lubrication, material pair, geometry and whether this simplified model is permitted. Confirm those conditions against the actual cable-entry assembly, applicable requirement and current product documentation.

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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