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Electric motor - swapping the rotor

 
 
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teamidris
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Joined: 24 Feb 2008
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Location: Staffordshire UK



PostPosted: Fri Dec 13, 2013 7:28 pm    Post subject: Electric motor - swapping the rotor Reply with quote

I'm building a self-circulating oil cooler. I've used a D100 frame 3 phase motor with a B35 flange to drive a gear pump via a B35 bell housing. The 500mm fan fits where the little plastic fan was. To make my life easier I have stripped the motor down, machined the shaft down where the plastic fan was and put the rotor in the other way around. So the plastic-fan shaft now drives the pump (low pressure, low torque) and the decent shaft takes the fan.
The lady at the motor place says they swap rotors end-over-end at their works regularly. ( I did check before I waded in). I wondered if anyone had any experience of it?
You might ask why I didn't buy double ended, but it's cost and lead time.

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DD
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1986 Land Rover Defender

PostPosted: Fri Dec 13, 2013 7:42 pm    Post subject: Reply with quote

42
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teamidris
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PostPosted: Fri Dec 13, 2013 7:49 pm    Post subject: Reply with quote

Not your 'thing' then Laughing
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Xpajun
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PostPosted: Fri Dec 13, 2013 7:50 pm    Post subject: Reply with quote

Not a problem - something we would have done if needed in the factory back in the day...
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jeepmadmike
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PostPosted: Sat Dec 14, 2013 7:33 pm    Post subject: Reply with quote

If it was made in the last thirty years which it must be having a d100 frame

It will no problem at all unless it's very odd, but then I would expect it to be a non standard frame.

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teamidris
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Joined: 24 Feb 2008
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Location: Staffordshire UK



PostPosted: Sun Dec 15, 2013 9:02 am    Post subject: Reply with quote

Possibly even made in the last three weeks Very Happy
It's happy-shopper / bottom end, being ally frame. Looks nice on the outside, and rough on the inside. But I'm not asking a lot of it with a fan and a low pressure pump, so they normally survive well.

The other one I'm building has a 250mm fan and is for really thick gear oil. (uses intercooler tube instead of oil tube). This was the first odd-ball in-house job we did, so we bought the pump set in. I've done 7 of them I am still struggling to ream an ally fan hub from 14mm to 9/16" to fit where the plastic fan was. Maybe these will swap around as well? Which makes my life a whole lot easier Cool

Thanks for the experienced help Very Happy

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