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Classification of Gears
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The gears can be classified in the following way:-
1. Depending on the relative position of the geometrical axes of the driving and driven shaft.
2. Depending upon No. of steps.
3. Depending upon the housing design.
4. Depending upon the peripheral Velocity.
5. Depending upon the accuracy of manufacture.
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1. Depending on the relative position of the geometrical axes of the driving and driven shaft. |
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2. Depending upon No. of steps.
a. One Step Gears
b. Two Step Gears
c. Three Step Gears and so on...
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3. Depending upon the housing design.
a. Open Drives:- The gear drive is without a casing and is subjected to the action of dust and dirt.
b. Closed Drives:- The gear Drives are enclosed in special casings and are protected against dirt
and dust and are properly lubricated.
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4. Depending upon the peripheral Velocity.
1. Low Velocity: V is < 3 m/s.
2. Medium Velocity: V=3 to 15 m/s.
3. High Velocity: V is>15 m/s.
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5. Depending upon the accuracy of manufacture.
According to International Standard there are 12 degrees of accuracy of manufacture of gears, 1 being the
highest.
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