Gear selection
Gear selection
(OP)
I want to select gears for a gear ratio of 10. Can I get this gear ratio by using only one pair of gears. Please suggest best pair of gears.
Thanks in advance
Thanks in advance
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RE: Gear selection
RE: Gear selection
RE: Gear selection
A 10:1 ratio can be done in one stage of a belt, chain or gear drive. It may be a poor layout.
Do an arrangement drawing of your concept. See if it works. If you can do it in one stage, you have two gears or sprockets. If you need two stages, you need four gears or sprockets.
In the case of any sort of sprocket, make sure you have enough teeth in contact.
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JHG
RE: Gear selection
You can use a 2 stage spur gear reduction where the motor pinion drives a compound gear, and the output gear is coaxial with the motor shaft. This will provide an output that rotates in the same direction as the motor.
A 10:1 single chain reduction will not be very compact and the smallest chain you can find might be a bit oversized for your power levels.
RE: Gear selection
WHAT will be too small? 10:1 is well within a worm gear set's capability. (Peugeot has used worm drive axles at ~3:1)
For parallel shafts, 10:1 in one pass is possible with gears. The only drawback is you need a big driven gear with a lot of teeth. Extra gear passes are added to save space, not because one pass can't work.
10:1 is also possible with roller chain. You may need a small idler to get enough wrap on the smaller gear.
Hoists that use wire rope or strap as the lifting element are commonly built with a modest gear pass in the drum itself. What sort of hoist mechanism are you planning to use?
Mike Halloran
Pembroke Pines, FL, USA