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#1
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I have a Bodine Gearmotor in my hand. I need an interpreter to tell me what the information on the spec plate says in plain English. Volts 130, HZ- DC, FF 1.0, A .48, HP 1/17, AMB C40, INS S, Time Cont., RPM 417, TORQ 5.4 lbs-in, Ratio 6-1. Well if that's not a foreign language what is? Well I recognize the RPM and the ambient temp, the horse power, but what does it mean in terms of how fast is it in relation to 6-1. Can I plug it to the wall? or do I need a converter for that HZ-DC? Help a challenged mind. |
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#2
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| Probabally a universal plate for AC motors also, It appears to be a DC motor, at off load 130v supplied would result in 2500rpm to get 417 at 130v. To confirm it is DC, it should have two armature wires, (if not a wound field). Put a voltmeter on the leads and try and turn the gear box over by hand, this will result in fairly high motor rpm, if DC motor with PM field, you will see a DC voltage on the leads, which is relative to the rpm. IOW if you spun the armature over as high as 2500rpm then you would get 130v out. If no voltage out, then it may be AC, but I doubt it, Bodine are usually DC. Can you see any brushes? Al.
__________________ CNC, Mechatronics Integration and Machine Design. “Logic will get you from A to B. Imagination will take you everywhere.” Albert E. |
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#3
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| 080112-1711 EST USA To add to what Al said: Hz = DC I would say means it is DC. If you used a bridge rectifier from 120 V AC the average DC output would be 108 ( this comes from 120 * 0.636 / 0.707 ) and you could run the motor at near full speed, ( 417 * 0.636 / 0.707 ) * ( 120 / 130 ) = 346 RPM. A single diode would give you half this voltage and half the speed. 130 V at 0.48 A = 62.4 W or 62.4 / 746 = 0.084 HP input. The mechanical output power at full continuous load is 417 * (5.4 / 12) / 5252 = 0.036 HP. And it appears that the motor mechanical output is 1/17 = 0.059 HP without the gear box. Since the gear box output is 417 RPM at 130 V and the ratio is 6 to 1 the motor RPM is 417 * 6 = 2502 RPM. FF 1.0 is probably form factor meaning the rating is for pure DC and not unfiltered full wave rectified AC. There is somewhat more internal heating with unfiltered AC meaning the continuous full load rating would be less when used with this input. (edit) to correct error. |
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#5
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| Bodine usually use white & Black for the DC power, the green will be ground, you can confirm this with an ohmeter. For uncontrolled feed or to test you can use a bridge rectifier off of 120v ac, as GAR mentioned. For speed control, you can buy or obtain off ebay, KB and Baldor SCR drives that will give you variable speed. These units are often used as rotary table positioners, for welding etc. Al.
__________________ CNC, Mechatronics Integration and Machine Design. “Logic will get you from A to B. Imagination will take you everywhere.” Albert E. Last edited by Al_The_Man; 01-12-2008 at 06:23 PM. |
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