Bridgeport Milling Machine feed control module

This topic has 23 replies, 13 voices, and was last updated 1 May 2026 at 21:13 by henrik83.

Viewing 24 posts - 1 through 24 (of 24 total)

Author

Posts
24 February 2014 at 12:52 #17314
Mark Willis
Participant
@markwillis73847
Advert

24 February 2014 at 12:52 #144924
Mark Willis
Participant
@markwillis73847
Hi

Can any one help please I have a electrical fault on the feed control module of my milling machine and am trying to find out the value of the resistor which has burnt out, the control module is a "ERSKINE Rev4 PD-1114-03-B" control box (on a Bridgeport series 1 mill) which controls the table longitudinal feed.

if any one has a close up photo, or a circuit diagram of this its much appreciated…

Here is the crunch all the manuals available that i can find on line, or have got copies of all show the American version which have different circuits.. so it is the English version i am after.

I will paste a photo a bit later

Thanks Mark
24 February 2014 at 13:33 #144930
Clive Foster
Participant
@clivefoster55965
I have nice, re-drawn, versions in pdf format which I can send if you PM me with your E-Mail address.

Many thanks are due to fellow forum members John and Ken who kindly supplied me with photo copies of original Erskine data and circuit diagrams just before Christmas which I was able to re-draw and re-dtp into native digital files which print out cleanly.

Clive
24 February 2014 at 19:53 #144959
Mark Willis
Participant
@markwillis73847
Hi Clive

Thanks for your reply, my email is

[email protected]

Many thanks Mark

For any one interested the resistor in question is R6, which was damaged when a fault occurred with the micro switches and one was effectively welded / stuck, so both were being operated at same time. or thats my conclusion, as to the cause,
24 February 2014 at 22:49 #144974
Mark Willis
Participant
@markwillis73847
Clive .. Many thanks for the information, its spot on for the UK version of Feed control unit.. Mark
2 March 2014 at 21:04 #145754
Dennis R
Participant
@dennisr
Clive

PM sent

Dennis
30 May 2014 at 09:35 #153890
Guy Griffin
Participant
@guygriffin31792
Clive,

PM sent; I would like a copy of the Erskine controller circuit too!

Thanks, Guy
21 June 2014 at 09:29 #155887
David Yeo
Participant
@davidyeo27608
I have a bridgeport vertical milling machine, the controlboard " ERSKINE Revsion 4 PD-114-03-B" is not working, anyone has the circuit diagram ? Can I have A copy ? My email is [email protected]

Thank you.

David
13 December 2014 at 22:14 #172467
David Kavanagh
Participant
@davidkavanagh47654
Hi

I have just rebuilt a Bridgeport and need a copy of the Erskine controller circuit diagram if possible.

My email is [email protected]

Thank you

Dave
14 December 2014 at 12:31 #172517
_Paul_
Participant
@_paul_
Clive,

Apologies for jumping on the bandwagon but I would love a copy of the Erskine controller circuit too

PM being sent.

Regards

Paul
14 December 2014 at 14:56 #172528
Clive Foster
Participant
@clivefoster55965
Hi Paul

No problem but I'll need an E-Mail address to send the data to.

Alternatively you could sign up with the Bridgeport Yahoo Group and download it from the files section there.

Dave

E-Mail and attachments are on their way.

Regards

Clive
1 March 2018 at 15:05 #343823
K Pether
Participant
@kpether22614
Hi folks ,i too am having problems locating the identity of this resistor 6 on our Erskine Power Feed..my email is ……………..if there is any useful info on this please

Kris

Edited By JasonB on 02/03/2018 07:31:02
22 April 2019 at 07:37 #405973
Mirsad Cosic
Participant
@mirsadcosic39563
hi,

can anyone send me a copy of schematic. I need valuse of resistor R6

[email protected]
31 October 2019 at 14:20 #435406
Paolo Mancini
Participant
@paolomancini92501
Hi Clive,

I also like a copy of the Erskine controller circuit.

I need to replace some components.

Thank you so much,

Paolo
31 October 2019 at 15:50 #435416
Clive Foster
Participant
@clivefoster55965
Paola

Please send me a Private Message with your E-Mail address and I'll sed the information over.

Clive
1 November 2019 at 04:35 #435462
Paolo Mancini
Participant
@paolomancini92501
Hi Clive,

PM sent.

Thank you,

Paolo
17 June 2023 at 14:23 #648831
Leon Van Dyk
Participant
@leonvandyk82123
Hi Clive,

I know it has been a while this thread started. I wondered if you could also help me with the circuit diagram for the Erskine. My board I think is an older type (PD/1114/01/01/B Issue 3), but I'm sure all of them should operate in a fairly similar way. I've looked and asked everywhere and nobody can help me.

I bought a Series 1 mill, with the powerfeed not working. Thank in advance.

Kind regards,

Leon
17 June 2023 at 16:30 #648844
Anonymous
May not be the circuit board. When my unit stopped working it turned out that the motor commutator needed cleaning.

Andrew
17 June 2023 at 16:49 #648846
Clive Foster
Participant
@clivefoster55965
Leon

PM sent re data.

Agree with Andrew that problem could well be motor commutator dirty and / or worn out brushes. If you do decide to investigate inside be prepared for copious quantities of finely divided carbon dust. Judging by the quantity inside the one on mine I'd be unsurprised to discover that it had worn out two sets of brushes without intermediate cleaning!

Do wear disposable gloves because the dust is so fine it's near impossible to get your hands completely clean. Even after three or four goes. The mess in the sink will not improve popularity with the distaff side either. You also won't be impressed next time you have to clean out the U bend. I know significant amounts hang in there for 3 years!

Tip :- decent brand hair shampoo is much better than Swarfega and the other mechanics hand cleaners for shifting this sort of thing.

Clive
18 June 2023 at 10:13 #648919
Leon Van Dyk
Participant
@leonvandyk82123
Hi Andrew and Clive

Thank you for the advice. I'll also look into this, though I also saw a burned resistor on the board.

Leon
24 April 2026 at 12:02 #845689
henrik83
Participant
@henrik83
Hi

I am new here, and what led me here is the infamous Resistor R6 on the Erskine PD-1114-03-B Rev.4 on my Bridgeport.
As what have happened to many other here my resistor burned up. when i was using it i smelled something burnt,I stopped and went for lunch and when i came back the feed motors did not work anymore

I opened the Erskine drive and saw R6 bascily in 2 pieces.
I started Googling and that’s how i ended up here.

I want to keep my Bridgeport as original as possible and i’m looking for help to fix it hopefully.

I saw that Clive here had made a circuit diagram and wonder if you can share it with me as well ?

Also if any other here as any tips of what to check before i fix the drive, i saw some comment about cleaning the commutator

Thanks in advance

Henrik
29 April 2026 at 21:39 #846265
henrik83
Participant
@henrik83
Hi

Does anyone know what value R6 is
29 April 2026 at 23:29 #846288
Clive Foster
Participant
@clivefoster55965
Henrik

My parts list says 100 Ω wire wound. Unfortunately no power rating given.

Send a PM to me with your E-Mail address and I’ll shoot the PDF data pack over. Or you could join the Bridgeport group on Groups IO and download it all from the files there.

Clive
1 May 2026 at 21:13 #846588
henrik83
Participant
@henrik83
Thank you, i spent much time on the internet just to try to find a clue of what value it could be.
The closest i came was 1K.

Once more, Thank you
Author

Posts