want to replace european motor with american one. 4

[chriskc71]

Hi, ,first time user and poster. Here's my problem. I need to replace this electric motor with one I can find here in the states.
This all I cna get off the German motor.

single phase
Nr.1209164
Typ LBF56/4B-11
230 volts, 50 hertz
0.85 amps
1390 RPM 0.07 kw
0.10 horse power
IP 54
Ins. cl F
50 C

There is a red sticker on the gear box it reads:
B9
Typ13FW
i=295

I want to replace this one with a 120 volt 60 hertz motor. I do not know the shaft size or the key. I know it is a right angle motor attached by a flange. It periodically turns on to turn a belt to feed components into a hopper. It does have a capacitor as well. Am I able to get any shaft or key information from what is listed on the motor? I am not familier with these things and any help would be great.
Also I failed to mention this motor is being fed 120 volts, 60 hertz. Thats why we have problems with it. Electrical can't be changed so the motor has to.

Thank you,
Chris

 

[jraef]

The speed will not be the same, because if the 50Hz/60Hz issue. Also, the shaft size will not be the same because of the metric / SAE issue.

The shaft size issue may be able to be addressed at the coupling, assuming there is one, but if the motor is directly coupled to the gearbox, that might not be the case. If you have a machine shop available, you could in theory have someone customize the gear hub I suppose. Don't custmize the motor shaft because theme every time the motor must be replaced, it will need the shaft to be modified.

A better option in my mind is to find a metric motor that's available here with the right shaft size and mounting type, but buy a 230V 3 phase version. Then at this size, you can easily find a VFD that will accept 115V single phase input and provide a 230V 3 phase output. They are very common up to about 1-1/2HP. You may not need to change the speed, but the good thing is that you can set it to put out 50Hz for the motor.


"You measure the size of the accomplishment by the obstacles you had to overcome to reach your goals" -- Booker T. Washington

 

[chriskc71]

Great information, Thank you so much. I'll get to work on that and see what comes up.
Chris

 

[chriskc71]

Thanks for your reply, very helpful. One thing I missed is that the power going to the current German motor is 120 volts, 60 hertz. Totally not what it is suppose to run on. Thats why we have been having problems with thius thing.
Chris

 

[zlatkodo]

You can rewind it to 120 V; 60 Hz.

 

[chriskc71]

I didn't know that. Something for me to bring up to leadership. Thanks zlatkodo.

 

[ScottyUK]

I think I've found your exact motor carrying markings for both 50Hz and 60Hz. Your might fix this problem with just a 120/240V step-up transformer.
ATB are a decent brand, I wouldn't scrap it without good cause. Ground your secondary neutral, and provide overload protection for the motor.

 

[itsmoked]

I would do what Scotty suggests; Add the transformer and make sure you have the standard motor protection and it should work well.



Keith Cress
kcress -

http://www.flaminsystems.com

 

[waross]

120 volts into a 230 Volt motor is a bigger problem than the frequency. A 230 Volt 50 Hz motor should run well on 240 Volts 60 Hz.
It will not produce full torque. To develop full torque the volts per Hertz ratio must be maintained.
230 Volts at 50 Hz is a 4.6 Volts per Hertz ratio.
That works out to a maximum voltage of 276 Volts at 60 Hertz.
For a motor this small a transformer should not cost too much.
Try the motor with a 120 Volt to 240 Volt transformer.
It will probably work OK.
The speed will change in the ratio of 60Hz/50Hz.

Bill
--------------------
"Why not the best?"
Jimmy Carter

 

[chriskc71]

Awewsome replys! thanks for all your help guys. Good things are happening. Scotty that is the motor. Virtually everything on that plate is the same. Tnanks man.
Chris

 

[ScottyUK]

No problem, hope it works out for you.