Sr. No. Particulars Belt drive Chain drive Gear drive 1 Main element Pulleys, belt Sprockets, Chain Gears 2 Slip Slip may occurs No slip(Positive drive) No slip(Positive drive) 3 Suitability For large center distance For moderate center distance For short center distance 4 Space requires Large Modrate Less 5 Design, manufacturing, complexity Simplest Simplest Complicated 6 Failure Failure of belt does not cause the further damage of machine. Failure of chain may not seriously damage the machine. Failure of gear may cause serious break down in the machine. 7 Life Less Moderate Long 8 Lubrication Not required Required Requires proper lubrication 9 Installation cost Less Moderate Long 10 Use For low velocity ratio For moderate velocity ratio For high velocity ratio