GEARS
Gear is a mechanical instrument having toothed section generally used for transferring torque, force from one part of machine to another part of machine.

BACKLASH
It is a minimum distance between the two mating teeth in motion when the gear is driving the pinion.
       Sometime it is also called as LASH or PLAY.
"In a pair of gears backlash is the amount of clearance between mated gear teeth".
Theoretically, the backlash should be zero, but in actual practice some backlash must be allowed to prevent JAMMING.
The other reason for backlash is allowing for lubrication, manufacturing errors, deflection under load and expansion.


TYPES OF GEAR

Harmonic Drive :- This type of gearing system is used in motion control robotics and aerospace, because it has advantage of lack of backlash, compactness and gear ratio.


 
 Spur Gears:-Spur gears are by far the most common type of gear and with the exceptions of the "cog" the type of gear that has been around the longest.Spur gears have teeth that run perpendicular to the face of the gear.


 

Helical Gears:- Helical gears are very similar to spur gears except the teeth are not perpendicular to the face. The teeth are at an angle to the face giving helical gears more tooth contact in the same area.
Helical gears can also be used on non-parallel shafts to transmit motion.
Helical gears tend to run quieter and smoother than spur gears due to the increased number of teeth in constant contact at any one period of time.


 





Herringbone Gears:-Herringbone gears resemble two helical gears that have been placed side by side. They are often referred to as "double helicals".

 
One benefit of herringbone gears is that it helps to avoid issues related to side thrust created with the use of helical gears.
 


Bevel / Miter Gears:-Bevel gears are used mostly in situations that require power to be transmitted at right angles (or applications that are not parallel). Bevel gears can have different angles of application but tend to be 90°.



 
Worm Gears:-Worm gears are used to transmit power at 90° and where high reductions are required. The worm resembles a thread that rides in concaved or helical teeth.



Internal Gears:-Internal gears typically resemble inverted spur gears but are occasionally cut as helical gears.



 




Racks & pinion:-A rack is basically a straight gear used to transmit power and motion in a linear movement.


 

 
Face Gears:-Face gears transmit power at (usually) right angles in a circular motion. Face gears are not very common in industrial application.


 

Sprocket :-Sprockets are used to run chains or belts. They are typically used in conveyor systems.

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4 Responses so far.

  1. Crosrol Uniflock
    Your various industrial gears are good and well molded. Are you having gears used for textile machineries?
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  2. Completely satisfied with the spun gears.
    http://www.mmestrygears.com/

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