Which pulley diameter should be entered?

Use pitch diameter for synchronous belts. For V-belts use the applicable datum/effective diameter and matching datum/effective belt length from the selected manufacturer system; do not substitute outside diameter.

What does belt-loop frequency mean?

It is the rate at which one marked point on the belt completes a full circuit, equal to pitch-line speed divided by pitch/datum belt length.

Does the calculator include slip?

No. Shaft ratio and loop frequency use ideal no-slip kinematics. A V-belt drive with slip requires measured speeds or a validated slip model.

Do 2× and 3× prove two defects or severe wear?

No. They are only mathematical harmonics of loop frequency. Diagnosis requires spectra, phase, operating condition and inspection.

Can shaft speeds define a belt-flutter frequency range?

No universal range is derived from shaft speeds alone. Span natural frequencies depend on tension, span length, mass per length and boundary conditions.

Alat Kejuruteraan Percuma

Kalkulator Frekuensi Gelung Tali Sawat dan Aci

Kira frekuensi gelung tali sawat ideal tanpa gelinciran, kelajuan garis pic dan frekuensi aci daripada dimensi pic/datum yang sepadan.

Geometri Pic/DatumKinematik Tanpa GelinciranRujukan, Bukan Diagnosis

Hasil Kinematik

Frekuensi gelung tali sawat

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Kelajuan garis pic

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Frekuensi aci pemacu

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Frekuensi / kelajuan aci dipacu

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Nisbah kelajuan n₂/n₁ = d₁/d₂

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Harmonik matematik frekuensi gelung

Berbilang	Hz	kitaran/min

Kehadiran harmonik sahaja tidak mengenal pasti kerosakan atau keterukan yang unik.

Kinematik ideal tanpa gelinciran

v = π d₁ n₁ / 60,000 [m/s]

f_gelung = v / (L/1000) = π d₁ n₁ / (60 L)

n₂ = n₁ d₁/d₂; f₁=n₁/60; f₂=n₂/60

Semua input panjang mesti menerangkan sistem pic/datum yang sama. Gates membezakan diameter pic daripada diameter luar untuk gegancu segerak; Optibelt juga membezakan diameter pic tali sawat segerak dan diameter/panjang datum tali sawat-V.

Sumber: Manual Gates Light Power and Precision, Manual reka bentuk tali sawat segerak Gates, dan Manual tali sawat-V Optibelt.

Had diagnostik: ciri setempat pada tali sawat boleh berulang pada frekuensi gelung, tetapi harmonik bukan label kerosakan satu dengan satu. Frekuensi asli rentang tali sawat memerlukan tegangan, rentang bebas, jisim per panjang dan keadaan sempadan; ia tidak dibataskan secara universal oleh kedua-dua frekuensi aci.