Hi Guys,
I need some parts for my BP series 1 mill machine. I need spindle switch and CR5 and CR3 relay. Can somebody please tell me from where I can get hold of these parts. Thanks in advance.

There should be a number and brand name printed on the relay. There is also typically voltage ratings for the activation coil printed on the case as well.

IF the numbers are there (quite likely) you should be able to get them interchanged via Grainger, Mouser and/or DigiKey. Most are standard 12, 24 or 5 vdc relays - some might be AC depending on the adjoining circuitry.

Either way, the above sources, especially Grainger, should be able to help once you identify exactly what you have and need.

You might also try EMI as they service a lot of Bridgeport equipment and may be able to work off of the Bridgeport reference numbers you mentioned.