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19-07-2012 #1
when i picked up my boxford lathe it came with an interesting single phase motor that was obviously not suitable for the lathe
the spec...
240v single phase
2hp
9700RPM!!
i have never seen a single phase motor with that high an rpm rating and it made me wonder
what would this motor be used for?
any ideas?
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19-07-2012 #2
Odd size for an ac motor but ok for a dc one. Photo please.
How are you getting on with the boxford? I bought a Blomqvist Model A, copy of the Boxford, a while ago and have rebuilt the gearbox earlier this year and I have just done the apron gears. Just started stripping the rest down for a re-paint.
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19-07-2012 #3
If it's a single phase motor then it would either be run on 50Hz or 60Hz, so for 2-poles that's 3000rpm or 3600rpm. The lower the number of poles the higher the speed, but you can't have less than 2-poles therefore( Web-goblin said) it must be a DC motor. Or if you're extremely lucky I guess it could be a servomotor...
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19-07-2012 #4
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19-07-2012 #5
just noticed that the pic of the spec plate is indecipherable so i wrote down what it says
G&C machines
S.M.E. division
made in the uk
AC series motor
INS. CL h
KW 1.5
VOLT 230/240
AMPS 8.9
HZ 50
PHASE single 1
REV/MIN 9700
RATE sfr 30 min
FRAME 9085l
SERIAL NO. 630 cbj 5621 82
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20-07-2012 #6
It'll be some kind of commutator/brushed motor, not a standard AC induction motor.
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20-07-2012 #7
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20-07-2012 #8
I've got to admit, I'm struggling to think of anything that would need 1.5kw (aprox. 2hp) at that speed, or what you could use it for!
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20-07-2012 #9Visit Us: www.automationshop.co.uk
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20-07-2012 #10
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