Flat Belt Design Equations

V and Flat Belt Design and Engineering Data

Flat Belt Design & Equations

Description Equation
Torque transmitted by a belt Flat Belt Design & Equations
Rated Capacity of Belt Flat Belt Design & Equations

Variable Declarations

P = tension in belt (1-tight, 2-slack)
hp = horsepower
s = ultimate strength of belt
t = thickness
b = belt width (in)
f = coefficient of friction (leather = 0.3, rubber = 0.25 Flat belt (use .5123 for V-belts)
p = belt density (lb/in3 0.035 for leather, 0.045 rubber)
Vs= belt speed
Cm, Cp, and Cr = correction factors for motor type, pilley size and environmental conditions.
Φ = Angle of contact

Materials properties Suleather ~ 250 - 400psi