Need help converting old Bridgeport feed to newer type

jackal

Titanium

Joined

May 4, 2006

Location

northwest ARK

• Jan 30, 2018

• #1

I have a buddy that bought an older Bridgeport mill.
I haven't seen it ,but it has the old large box feed on the x axis.
How hard is it to convert this to the newer servo type?
I'll try to get a pic of it.

 

JRIowa

Diamond

Joined

May 27, 2003

Location

Marshalltown, Iowa, USA

• Jan 30, 2018

• #2

All you need is money and this http://www.servoproductsco.com/specs/80857_focus-on_models_200_206_225.pdf
If the gear feed still works, I'd keep it. Most of the motors on them were 3 phase. You can put a VFD on it and have the variable drive for about $100.
If it doesn't work, take if of and sell, there are guys that want the parts.
JR

 

jackal

Titanium

Joined

May 4, 2006

Location

northwest ARK

• Jan 30, 2018

• #3

Thanks JR. I'll tell him.
It looks like the one in this thread

http://www.practicalmachinist.com/v...hes/bridgeport-power-feed-repair-help-340264/.

 

awake

Titanium

Joined

Jan 24, 2006

Location

Angier, North Carolina

• Jan 30, 2018

• #4

jackal said:

Thanks JR. I'll tell him.
It looks like the one in this thread

http://www.practicalmachinist.com/v...hes/bridgeport-power-feed-repair-help-340264/.

Click to expand...

Which one? The 6F (with which the thread began) or the Erskine unit which was asked about at the end?

In either case, though, if it ain't broke, don't fix it!

 

JRIowa

Diamond

Joined

May 27, 2003

Location

Marshalltown, Iowa, USA

• Jan 30, 2018

• #5

Make sure you know what model the feed is. IMHO, the Servo feeds are not as good as the 6F and 8F bridgeport feeds. The bridgeport feeds can be repaired/rebuilt if needed.
JR

 

jackal

Titanium

Joined

May 4, 2006

Location

northwest ARK

• Jan 30, 2018

• #6

I sent him some pics and the first one in the post ( far left) is what he said it looked like.

 

H

HWElecRepair

Hot Rolled

Joined

Dec 9, 2013

Location

Fort Wayne, IN

• Jan 31, 2018

• #7

What is the purpose of going to the newer style feed?

What is his power feed doing/not doing that makes him wanna spend $980 to replace it?

Jon
H&W Machine Repair

 

jackal

Titanium

Joined

May 4, 2006

Location

northwest ARK

• Jan 31, 2018

• #8

Jon,
I haven't looked at it yet. Maybe it is something little.

 

rons

Diamond

Joined

Mar 5, 2009

Location

California, USA

• Feb 2, 2018

• #9

HWElecRepair said:

What is the purpose of going to the newer style feed?

What is his power feed doing/not doing that makes him wanna spend $980 to replace it?

Jon
H&W Machine Repair

Click to expand...

Agree. I have used both types of power feeds. The servo feeds can bog down a bit in a cut (feed rate slows down). The older BP type is built like a tank and can hold up better.

 

jackal

Titanium

Joined

May 4, 2006

Location

northwest ARK

• Mar 5, 2018

• #10

I went by today and he has the old drive fixed. An electrician was in there hooking up other machines and repaired it.
He cleaned contacts, fixed switch and potentiometer!
Thanks for the info everyone.