Calcolatrice Trasmissione a Cinghia Gratuita

Calcola il rapporto di velocità e la lunghezza della cinghia.

mm
mm
mm
RPM

Driven Pulley Speed

875.0 RPM

Speed Ratio2.000
Approx. Belt Length1,718 mm

Driven Pulley Speed vs Driver Pulley Diameter (D1)

Vedi formula →

Formula

## Belt Drive Speed and Belt Length Belt drives transmit power between shafts using friction between a belt and pulleys. ### Speed Ratio **N2 = N1 x D1 / D2** (assuming no belt slip) ### Belt Length (open drive) **L = 2C + pi(D1 + D2)/2 + (D2 - D1)^2 / (4C)** where C is the shaft centre distance. This approximate formula works well for standard configurations.

Esempio Risolto

150 mm driver at 1750 RPM driving a 300 mm pulley, centres 500 mm apart.

  1. 01Speed ratio = 300/150 = 2.0
  2. 02Driven speed = 1750 / 2.0 = 875 RPM
  3. 03Belt length = 2x500 + pi(150+300)/2 + (300-150)^2/(4x500)
  4. 04L = 1000 + 706.9 + 11.25 = 1718 mm