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fpm to rpm conversion

fpm to rpm conversion

fpm to rpm conversion

(OP)
Hello,
can anybody tell me how to convert rpm of a motor to fpm of a conveyor. the motor is a 3 phase, 220 v rated for 1800 rpm at 60 HZ, and the conveyor is going at 60 fpm with a 30:1 gear box. I was wodering how the value of 60 fpm was derived. the conveyor has a 4" end drive on it (if it helps). Thanks

RE: fpm to rpm conversion

With a 30:1 reduction, the pulley is spinning at 60 rpm.  The circumfrence of the pulley is 4" x pi(3.14159...) or 12.5" ~ 1 ft.  Every time the pulley spins in moves the belt 1 ft.  It spins 60 times a minute, 60fpm.

RE: fpm to rpm conversion

The speeds are directly proportional.
Double the speed of the motor and you double the speed of the conveyor.
The motor turns at 1800rpm.
This is reduced through a gearbox to 60rpm.
The circumference of the end drive is about 1 foot (4" X pi) and so a point on that moves through 60 feet per minute. As the belt moves at that speed it alos move at 60 feet per minute.

"I love deadlines. I love the whooshing noise they make as they go past." Douglas Adams

RE: fpm to rpm conversion

Seems I type too slowly: R1100S beat me to it!

"I love deadlines. I love the whooshing noise they make as they go past." Douglas Adams

RE: fpm to rpm conversion

(OP)
Thanks guys,
I kept multiplying 60*pi*4". it was driving me nuts..

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