Impeller help

[meika123]

Guys,
I am in the market for a factory built impeller to mount in my cyclone. Does anyone have an idea where to pursue this?
I found a 15" Oneida impeller with a 1 1/8" shaft. Oneida recommended that I not use it on any motor shaft smaller than 1 1/8". Said it was too dangerous. The last words in their email were: Be careful!!

Thanks,

Dave in NC

[Tom Slick]

you could try
www.grainger.com
www.mcmaster.com
www.mscdirect.com

[cgallery]

How about getting a motor w/ a 1.125" shaft? You can find 'em on eBay for $225 (5-HP TEFC 3-phase). Then you need a phase converter (but I think they can be found used for under $100).

Was the 15" impeller at a good price? Was it used, or directly from Oneida? If it was a good price on a used one, I'd find a suitable motor.

[cgallery]

BTW, any motor that can turn a 15" impeller is probably going to be large enough to have a 1.125" shaft.

[meika123]

How about getting a motor w/ a 1.125" shaft?
Was the 15" impeller at a good price? Was it used, or directly from Oneida? If it was a good price on a used one, I'd find a suitable motor.

As a matter of fact, it was a good price. $161.00-direct from Oneida.
It was also new. They list a motor as well-may have to investigate further.

Thanks,

Dave in NC

[cgallery]

As a matter of fact, it was a good price. $161.00-direct from Oneida.
It was also new. They list a motor as well-may have to investigate further.

Thanks,

Dave in NC

I believe Oneida's impellers are cast aluminum, making $160 for a new unit an undeniable bargain.

[Stytooner]

Dave, here is a decent looking motor. I have bought a few motors and many other things from these guys and they have great service. This motor looks to be very versatile for mounting as well. It would certainly power that impeller.


http://www.surpluscenter.com/item.as...tname=electric

[cgallery]

Dave, here is a decent looking motor. I have bought a few motors and many other things from these guys and they have great service. This motor looks to be very versatile for mounting as well. It would certainly power that impeller.


http://www.surpluscenter.com/item.as...tname=electric

That is a fantastic deal on a very versatile motor.

[Tom Slick]

That motor is a 3450 rpm, I'd make sure you can spin the impeller that fast, that is double the speed of the more common motors.

[cgallery]

That motor is a 3450 rpm, I'd make sure you can spin the impeller that fast, that is double the speed of the more common motors.

Could be exciting!

[LCHIEN]

I see no mention of speed and or HP. USually, impellors are meant to be run at a specific speed and use a specific horsepower.
the wrong speed could be dangerous. Over HP is wasteful of dollars ( additonal HP is simply not useable) and under HP will result in a burned out motor. What is the design speed and HP of that impellor?

[Stytooner]

I think 3HP is a good starting point. Typical dust collectors run the impeller @ 3450 RPM. In looking around, I have seen 3HP to 5HP motors driving 15" impellers. It all comes down to the actual specs of the fan and the housing design.


The one I built uses a 1 HP motor driving a 19" impleller with only 4 blades. It does this though @ only 1750 RPM. You couldn't spin that sized commercial impeller @ 3450 without at least a 5HP and maybe even more.

The concerns posted about the fan and motor combo are valid though. They both should be looked at as a package even though bought separately. The housing design and it's clearances and intake and exhaust ports and chutes also facto in as does the material it's all made from.

[LCHIEN]

I think 3HP is a good starting point. Typical dust collectors run the impeller @ 3450 RPM. In looking around, I have seen 3HP to 5HP motors driving 15" impellers. It all comes down to the actual specs of the fan and the housing design.


The one I built uses a 1 HP motor driving a 19" impleller with only 4 blades. It does this though @ only 1750 RPM. You couldn't spin that sized commercial impeller @ 3450 without at least a 5HP and maybe even more.

The concerns posted about the fan and motor combo are valid though. They both should be looked at as a package even though bought separately. The housing design and it's clearances and intake and exhaust ports and chutes also facto in as does the material it's all made from.

that's correct, the housing clearances and input output ports will have an secondary effect on HP, but the main driver with a nominal housing is the diameter and height and shape of the vanes. If its a stock commercial impellor, then they almost have to be designed for a specific motor HP and speed recommended for it. usually 3450 is the RPM, that's the most common and cheapest induction motor speed in the US. You should be able to find out what the HP is and not have to guess at 3 or 5 HP or whatever, and buy the minimum sized motor you need, to save money and space and weight.