A timing belt is a type of cogged
belt, usually made of reinforced rubber, which is used to drive the
camshaft in an internal-combustion engine. Also known as timing
chain or cam belt, a rubber timing belt is an integral part of an
internal combustion engine which controls the timing of the engine's
valves. Instead of timing belts, some engines use timing gears. The
term "timing belt" is also used to refer any flat belt
with integral teeth. Timing belts are used for power transmission or
to interchange rotary motion and linear motion. In such cases,
either high loads or maintaining a specific drive ratio are very
important. A common non-automotive application of rubber timing belt
is in linear positioning systems. Thus, the basic purpose of timing
belt is to transfer driving force by connecting wheel transmission,
chain transmission and belt transmission. Rubber belts are quieter
in their operation, are less expensive and are mechanically more
efficient.
Advantages
- Anti-wearing out
- Small elongation rate
- Strong
- Anti-oil
- Anti-heat
- Anti-ageing
- Anti-ozone
- Simple transmission mechanism
- Light weight
- No Lubrication
- Less noise while running
- Easy for maintenance
Types of rubber used in making timing belts
- Natural Rubber
- Neoprene
- Polyurethane
- Butyl Rubber (IIR)
- Ethylene Propylene Diene Monomer (EPM, EPDM)
- Chloroprene rubber
- Urethane
Types of rubber timing belts
- Rubber synchronous driving belt: This is a
special kind of rubber driving belt to transmit the mechanical
driving force.
- Circular arc tooth belt: Used in sewing
machinery, food processing equipment and small household
electrical appliances. Composed of closed round rubber, teeth
and attached belt or pulley.
- T-Type Belt etc.
Applications
- Automobile Industry
- Chemical fiber
- Needlework equipment
- Spinning equipment
- Cigarette marking machines
- Printing machines
- Office equipment
- Communication equipment
- Foodstuff machines
- Chemical machines
- Light industrial machines and
- Various precision machine tools and instruments.