Ninawezaje kubadilisha RPM kuwa Hz?

Divide RPM by 60. For example, 3000 RPM = 3000/60 = 50 Hz. This gives the fundamental (1×) frequency. Hz means cycles per second, while RPM means revolutions per minute.

Harmoniki ni nini katika uchambuzi wa mtetemo?

Harmonics are integer multiples of the fundamental (1×) frequency. The 2× harmonic is twice the fundamental, 3× is three times, etc. Different fault types generate specific harmonic patterns — for example, misalignment often shows strong 2× components.

Mzunguko wa mtetemo wa 1× unaonyesha nini?

The 1× frequency corresponds to one event per revolution. The most common source of 1× vibration is mass unbalance. Other 1× sources include bent shaft, eccentric rotor, and resonance excited at running speed.

Kwa nini harmoniki za juu ni muhimu?

Higher harmonics help diagnose specific faults: 2× often indicates misalignment or looseness, blade/vane pass frequency is the number of blades × RPM, gear mesh frequency is the number of teeth × RPM. Each harmonic pattern points to a specific root cause.

Tofauti kati ya Hz, CPM, na maagizo ni nini?

Hz (Hertz) = cycles per second. CPM (Cycles Per Minute) = Hz × 60 = same value as RPM for 1× order. Orders are multiples of the shaft speed: 1× = one per revolution, 2× = two per revolution, etc. Orders are speed-independent, while Hz/CPM change with RPM.

Zana ya Uhandisi ya Bure · #008

Kihesabu cha Mzunguko wa Harmoniki

Convert RPM to Hz and display harmonics 1× through 20×. Essential for vibration analysis and machine diagnostics.

RPM → Hz 1×–20× Orders Hz & CPM

Results

Mzunguko wa Msingi wa 1×

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Kipindi (mzunguko wa 1×)

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Angular Velocity ω

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Order	Frequency (Hz)	CPM	Period (ms)

Ubadilishaji wa RPM hadi Hz

Mzunguko wa msingi (agizo la 1×) kwa Hz ni sawa na kasi ya mzunguko iliyogawanywa na 60:

Mizunguko ya Harmoniki

Kila harmoniki (agizo) ni kizidishio cha nambari kamili cha mzunguko wa msingi:

where n ni agizo la harmoniki (1, 2, 3, …).

Kasi ya Angular

Vyanzo vya Kawaida vya Harmoniki katika Mtetemo

Order	Common Source
1×	Usawa mbaya, mhimili uliopinda, usawa wa mviringo
2×	Kutofautiana kwa mstari (pembe/sambamba), ulegevu
3×	Kutofautiana kwa mstari (kali), ulegevu
N×	Mzunguko wa msumari/bamba (N = idadi ya msumari)
Z×	Mzunguko wa meno ya gia (Z = idadi ya meno)
½×	Mzunguko wa mafuta (oil whirl), msuguano
0.43×	Oil whip

Mfano wa Vitendo

Mfano — Motor ya 3000 RPM

Given: Kasi = 3000 RPM

1× = 3000 / 60 = 50 Hz (3000 CPM)

2× = 2 × 50 = 100 Hz (6000 CPM)

3× = 3 × 50 = 150 Hz (9000 CPM)

Period = 1 / 50 = 20 ms

ω = 2π × 50 = 314.16 rad/s

💡 Tip: In vibration analysis, the harmonic spectrum pattern is a key diagnostic tool. Unbalance shows a dominant 1× peak, misalignment shows strong 2× (and sometimes 3×), and bearing defects generate non-synchronous frequencies related to bearing geometry.

Harmonic Frequency Calculator | RPM to Hz | 1×–10× Orders

Published by Nikolai Shelkovenko on Febuari 15, 2026 Febuari 15, 2026

Results

Ubadilishaji wa RPM hadi Hz

Mizunguko ya Harmoniki

Kasi ya Angular

Vyanzo vya Kawaida vya Harmoniki katika Mtetemo

Mfano wa Vitendo

Duka

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