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Engineering Calculator · 060

Multi-Hole Seal Ligament Calculator

Calculate material ligament between equal adjacent holes from centre spacing and hole diameter.

Seal geometry

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

Ligament width5mm
Spacing-to-diameter ratio1.5:1
Half ligament2.5mm

Formula
bligament=Pc−Dhb_{\mathrm{ligament}}=P_c-D_h

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

Direct answer

What this result means

Calculate material ligament between equal adjacent holes from centre spacing and hole diameter. The relationship b = Pcentre − Dhole ties hole centre spacing and hole diameter directly to the reported result. Adjacent holes have equal diameter and lie on one centreline. Treat the value as a transparent preliminary calculation, then compare it with the actual cable-entry assembly and current product documentation.

Multi-Hole Seal Ligament Calculator engineering relationship diagramb = Pcentre − Dhole defines the calculation shown here. Adjacent holes have equal diameter and lie on one centreline. Keep the entered units with the result so another reviewer can reproduce the method. This dedicated schematic represents multi hole ligament and is not to scale.HOLE LIGAMENT · TOOL 060Hole centre spacingLigament width
Calculator-specific engineering relationship diagram — schematic, not a product drawing, and not to scale.

Formula & theory

Make the assumptions visible.

b = Pcentre − Dhole defines the calculation shown here. Adjacent holes have equal diameter and lie on one centreline. Keep the entered units with the result so another reviewer can reproduce the method.

Calculation relationship
bligament=Pc−Dhb_{\mathrm{ligament}}=P_c-D_h

b = Pcentre − Dhole defines the calculation shown here. Adjacent holes have equal diameter and lie on one centreline. Keep the entered units with the result so another reviewer can reproduce the method.

Variables

PcentreHole centre spacingmm
DholeHole diametermm

Use sequence

From measurement to review

  1. Confirm hole centre spacing and hole diameter from a controlled drawing, measurement or project document.
  2. Apply b = Pcentre − Dhole with consistent units and keep the entered values beside the result.
  3. Use ligament width only after checking seal drawing, hole tolerances, material tearing limits and cable movement.

Limits

What this calculation does not confirm

  • Adjacent holes have equal diameter and lie on one centreline.
  • 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.

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 multi-hole seal ligament calculator calculate ligament width?

The tool applies b = Pcentre − Dhole to hole centre spacing, hole diameter. Adjacent holes have equal diameter and lie on one centreline. Keep the displayed units with the result so the calculation can be repeated.

02Calculator guidanceWhat does ligament width show for this hole ligament review?

Calculate material ligament between equal adjacent holes from centre spacing and hole diameter. It is a preliminary engineering value, not confirmation of a cable-gland model, standards compliance or installation approval.

03Calculator guidanceWhat should be checked about seal drawing before using the multi-hole seal ligament calculator result?

The equation does not model seal drawing, hole tolerances, material tearing limits and cable movement. 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.

Request product support