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Bridgeport milling machine wiring diagram

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Oldskool Ford14/07/2020 23:42:35
8 forum posts
2 photos

Hello, does anyone have a copy of the early Bridgeport wiring diagram they could share with me please?

My machine is dated 1969, it is the J head with 2 speed motor. The machine is new to me, when I looked inside the electrical panel on the side a couple of the wires are unmarked and hanging disconnected so I'd like to find out where they are meant to go and make sure it's safe before I power it up.

All of the wiring diagrams I can find online are for later 1970s machines with the larger electronics box on the side with the Erskine control unit.


Ady115/07/2020 02:30:04
4137 forum posts
576 photos

Are these the late ones?

A bridgeport users website would probbly be easier




Edited By Ady1 on 15/07/2020 02:34:06

Edited By Ady1 on 15/07/2020 02:39:46

Oldskool Ford15/07/2020 09:53:31
8 forum posts
2 photos

Yes those are the later ones unfortunately, thanks for posting though!

Clive Foster15/07/2020 13:01:21
2531 forum posts
82 photos

I have two PDF versions of an older wiring diagram for a machine fitted with the large, gearbox type, X axis feed with start - stop button housing integrated into the main machine castings. Single speed motor unfortunately.

If you think they might be useful PM me your E-Mail and I will send them over.

As I recall matters I created the first one from a very rough photocopy around 20 - 25 years ago to help fix a friends machine. We got it going so I guess it might be about right! Some years later I had to replace a contactor and, presumably, produced an amended diagram.

Revolting colours unfortunately. Something went funny during migrations between computers an programs over the years.


Edited By Clive Foster on 15/07/2020 13:16:26

Oldskool Ford16/07/2020 08:41:14
8 forum posts
2 photos

All sorted now, thanks to Clive for helping me with a diagram.

Emgee16/07/2020 08:49:53
1824 forum posts
239 photos
Posted by Oldskool Ford on 16/07/2020 08:41:14:

All sorted now, thanks to Clive for helping me with a diagram.

Good to see another success on the forum, thanks for letting us know.


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