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How do you gear down one quarter hp motor to run a 55 gallon barrel at 12 to15 RPMs what size pullys or sprockets?
Wiki User
∙ 14y ago
Assuming the motor runs at about 3000 RPM, The speed must be reduced by factor of about 200 for 15RPM.
Two sets of pulleys or gears would be best. Gears with a chain would not be good due to the high motor speed.
You could get 180:1 by putting a 2" pully on the motor, and running a belt to a 30" pulley which is on a shaft along with another 2" pulley, and run that pulley to another 24" pulley.
If the barrel is well-mounted and freely turns, you could use it as the second pulley, since it has a 24" approximate diameter.
You can also use three sets of pulleys, making it esier to find them.
example:
2" motor to 12" on shaft 1
2" on shaft 1 to 12" on shaft 2
2" on shaft 2 to a 10" or 12" one driving the barrel.
Consider buying a used worm gear reduction drive to save alot of this trouble. The motor can drive it directly and they come in different ratios.
Wiki User
∙ 14y ago
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