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Technical Office

Belt-Pulley Account

Cycle rate, output speed, belt speed and belt length calculation.

The first step of the belt selection is the correct geometric calculation.

  • Cycle Rate: i = n1 /n2 =D2 /D1
  • Strap speed: V = π·dn / 60 000 (m/s)
  • Open belt length: L 2C + π(d1+D2)/2 + (D2−D1)² / 4C

In the calculation, the shift is neglected. For the standard belt length, the closest value should be selected from the catalog.

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