Besplatni inženjerski alat
Kalkulator napetosti remena
Izračunajte odgovarajuću napetost remena pomoću metode otklona, metode frekvencije ili izravnog mjerenja sile. Podržava klinaste remene, zupčaste remene i ravne remene.
Rezultati
Metoda otklona
Metoda otklona mjeri napetost remena primjenom poznate okomite sile na sredini raspona remena i mjerenjem rezultirajućeg otklona.
- T — statička napetost niti (N)
- F — primijenjena sila otklona (N)
- L — duljina slobodnog raspona (mm)
- d — izmjereni otklon u srednjoj točki (mm)
Metoda frekvencije
Frekvencijska metoda koristi prirodnu frekvenciju vibracija raspona remena. To je točnije i ponovljivije, posebno za zupčaste remene.
- T — napetost niti (N)
- m — masa remena po jedinici duljine (kg/m)
- L — duljina slobodnog raspona (m)
- f — izmjerena prirodna frekvencija (Hz)
Preporučeni rasponi napetosti
| Vrsta remena | Napetost po remenu (N) | Smjernica za otklon |
|---|---|---|
| Klinasti remen SPZ | 150 – 350 | 1,6 mm po rasponu od 100 mm |
| Klinasti remen SPA | 200 – 500 | 1,6 mm po rasponu od 100 mm |
| Klinasti remen SPB | 300 – 700 | 1,6 mm po rasponu od 100 mm |
| Klinasti remen SPC | 500 – 1200 | 1,6 mm po rasponu od 100 mm |
| Zupčasti remen (HTD) | Prema specifikaciji proizvođača | Poželjna metoda frekvencije |
| Ravni remen | 200 – 1000 | Varira ovisno o širini |
Praktični primjer
Dano: Raspon L = 1500 mm, Sila F = 20 N, Otklon d = 5 mm
T = (20 × 1500) / (4 × 5) = 30000 / 20 = 1500 N po niti
Dano: Masa m = 1,2 kg/m, Raspon L = 0,5 m, Frekvencija f = 45 Hz
T = 4 × 1,2 × 0,5² × 45² = 4 × 1,2 × 0,25 × 2025 = 2430 N
⚠️ Napomena: Nove remene treba zategnuti 20–30% više od nominalne vrijednosti kako bi se kompenziralo početno istezanje. Ponovno zategnite nakon 24–48 sati rada.
There are three main methods:
- Deflection method: Apply a known force perpendicular to the belt at the midpoint of the span. Measure the deflection. Use the formula T = (F × L) / (4 × d).
- Frequency method: Pluck the belt span and measure the vibration frequency with a sensor or app. Use T = 4 × m × L² × f².
- Direct measurement: Use a dedicated belt tension gauge (e.g., Gates Krikit, Optibelt TT) to read the tension directly.
The frequency method is generally more accurate and repeatable. It eliminates human error in force application and deflection measurement. It is especially preferred for timing belts where precise tension is critical.
The deflection method is simpler and requires only a ruler and a spring scale. It is adequate for V-belts and general industrial use.
Too loose: Belt slipping, squealing noise, heat generation, premature wear, reduced power transmission efficiency, and inconsistent speed.
Too tight: Excessive bearing loads, premature bearing failure, shaft deflection, belt fatigue and cracking, increased energy consumption.
Recommended schedule:
- After installation: Check after first 24–48 hours (initial stretch)
- Routine: Every 3–6 months during scheduled maintenance
- After events: After any drive modification, motor replacement, or unusual vibration/noise
Keep a log of tension readings to track belt condition over time.
Yes. New belts undergo significant initial stretch during the first hours of operation. Best practice:
- Tension new belts 20–30% above the nominal target value
- Run the drive for 24–48 hours
- Re-tension to the normal operating value
- Check again after one week of operation
Used belts that have already stabilized can be tensioned directly to the nominal value.
Postupke opisane na ovoj stranici razvio je i terenski testirao tim Vibromera koristeći Balanset-1A, prijenosni dvokanalni balanser i analizator vibracija za balansiranje rotora na terenu.
Profesionalni instrumenti i softver za balansiranje na terenu. Praćenje vibracija za opremu s remenskim pogonom. Koristi se u više od 50 zemalja.
