Machine Design (Belt Drive) (2)

Machine Design

Belt Drive

Desirable Properties Of Belt Material : 

• The belt material should have high coefficient of friction with the pulleys. 
• The belt material should have high tensile strength to withstand belt tensions.
• The belt material should have high wear resistance.
• The belt material should have high flexibility and low rigidity in bending in order to avoid bending stresses while passing over the pulley. 

Different Between Open Belt Drive And Closed Belt Drive :

Length Of Open Belt Drive/Cross Belt Drive :

• Open Belt Drive

Here,   αs  = Wrap angle for small pulley (degree) 

              αb = wrap angle for big pulley (degree) 

              D = Diameter of big pulley (degree) 

              D = Diameter of small pulley (degree) 

              C = Center distance (degree) 

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