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Home Model Engine Machinist > The Tools and Tips > Machine Modifications > myford mg12 cylindrical grinder

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Old 10-04-2013, 01:09 AM   #11
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Quote:
it helps with airborne dust
we had extractors.

again thx for the tip. im not in any hurry for the TS at the mo. ill get it all set up then i can have a good look at whats need doing.

ruddy good clean wouldn't go a miss. i might give it a lick of paint. it's green at the mo and just doesn't go with the decor of the rest of the shed.

plus its a 3 phase. so i need to look up an inverter for it. think a 2.5hp or 3hp (to be on the safe side) will do.


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Old 03-27-2014, 09:14 AM   #12
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Hi all i'm trying to get an old myford mg12 cylindrical grinder going but the fuse's are gone and no one stocks them any ideas

thanks

wayne


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Old 03-27-2014, 08:13 PM   #13
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sorry cant help at the mo. still haven't got the thing in the shed yet.
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Old 03-28-2014, 01:41 AM   #14
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Are the fuses missing, or blown. Is it those on the outside in the machine entrance box, or inside the door with the contactors, relays etc.

I have a MG 12 manual machine, 10" wheel size. I'd look up the numbers if that might help. The externally mounted box has porcelain fuses they are not like anything in the usa, The inside has cartridge fuses that may be available.

I am assuming you are in USA. You can just replace the outside box with another 3 phase box from ebay or others, its only 15 amp, if I recal correctly.
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Old 04-16-2014, 02:56 PM   #15
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Hi Thanks no I’m in Ireland and the fuses are the porcelain one in side and there is only one original crabtree fuse the others were 2 odd ones push in but I’d love to upgrade it to breakers possible

regards

wayne
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Old 04-16-2014, 04:51 PM   #16
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Default Fuses

The inside fuses are 4 amps, These are control circuit fuses.

A manual much newer than my machine states this:Main fuses Klockner Moeller D11-11040-25,
control fuses DEF.63 SIZE 0 5amp

simplatron FF8 5 x 20mm DC controller

A company named Jubliee Machine has purchased the last spares of Myford, they would be the most likely source of fuses for a Myford. There are a number of circuit breakers within the machine, but fuses for the controll and main.

Does the machine operate? when jumping the fuses?
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Old 11-03-2016, 09:44 AM   #17
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well lets drag this thread out again.

it's been well over two years since i last posted in this thread...... so whats happened to the MG12? i still have it and the top is still out side doesn't time fly when you have a million other things to do and you keep walking past a 400kg paper weight thinking "to heavy, cant be assed, I'll move it next weekend"

that weekend has finally come! we have worked out a way to get it in the shed using some 4b2 a bit of ply wood, a 1ton engine lift and a fridge full of bacon and eggs.to feed the troops. have also made a set of wheels that clamps to the side of the bottom of the grinder. so when you wind the levelling screws down you can slid them in. then wind them back up and the machine is now resting on the wheels. i should then be able to move the whole machine around the shed to work on it.

other thing... as the top has been covered up outside for two winters. i was a bit on the apprehensive side of taking of the covers and having a look at the condition of the ways and the bearing of the main spindle. to my surprise both are fine. there is a little rust/burn on the ways at the chuck end, but don't think the will matter. considering its been out side for this amount of time, i think I've been lucky.

I'll take some pics of the move. then the hard bit....... trying to remember how it all goes back together.
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Old 11-07-2016, 01:29 AM   #18
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well that was fun.

after a few years of being out side the grinder is now in the shed. and as normal we got it in the shed before a remembered to get the camera out. as this thing weighs over 350kg the move went better than i thought it would.

pic below are in no particular order. sorry for the ones on there side.
Attached Thumbnails
20161030_140800.jpg   20161104_195934.jpg   20161104_200034.jpg   20161105_112551.jpg   20161105_112603.jpg  

20161105_123830.jpg   20161105_123905.jpg   20161105_150925.jpg  
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Old 11-07-2016, 01:39 AM   #19
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had a closer look at it when it was put together and it does seem i have got away with it. being out side for so long thought it would be a lot worse. with a bit of a rub the guides come up fine with no rust found on them. some of the dials have a small layer of surface rust on them, but again with a quick rub seems to get rid of the rust and the dial looks ok. think i have lost the fine feed dial, rust has eaten into the dial.

the wheel is shot. will need a new one of them. ill post more pics as and when i have them. think this will be a winter project.
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Old 12-06-2016, 10:31 PM   #20
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some more random pics


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20161206_221305.jpg   20161206_221417.jpg   work.jpg   wheel.jpg  
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