Copper 90%, lead 5%, tin 5%
Copper 94%, lead 4%, tin 2%
Copper 88%, zinc 2%, tin 10%
Copper 85%, lead 5%, zinc 5%, tin 5%
Aluminium
Gunmetal
Brass
Bronze
G.I sheet
Copper sheet
Steel sheet
Aluminium sheet
To maintain the tension
To decrease the tension
Keep the belt centralised
Allow free rotation of pulley
Rope drive
Gear drive
Pulley drive
Chain drive
