Re: Bridgeport Series I verse Series II CNC Refit Candidates

Les, I have to disagree a bit here. I have never seen a series I that
used universal 30 tooling. They use the 20 series when fitted with a
kwick switch spindle. Also, the series I was readily available with a
V ram or ridgid ram. The units up to the Boss6 were stepper motor
driven. The ones from Boss8 and up were DC servo. Not sure what
happened to Boss7, but I never saw one.

My series I Boss6 has a much larger base than a manual series I. I'm
not sure if it's as large as a series II base, but it's definitely
larger than the base on a manual series I. It is also flat on the top
of the base where the knee jack mounts instead of recessed. It weighs
close to 3500 lbs and the knee is manual.

One of the series II cnc that I have seen had some type of air
bladder assist on the knee and it seemed quite large. I'm not sure if
the knee was cnc, but it had was powered. It head was 4 HP.

~petev

--- In CAD_CAM_EDM_DRO@yahoogroups.com, Les Newell <lesnewell@h...>
wrote:

>
> Those are the manual machines (apart from the EZ trak which was a

beast

> on it's own). The CNCs are very different. The Series 1 CNC is

based on

> the manual machines with a special rigid ram, often using 30 series
> quick change tooling. Drive is via a varispeed belt from a 3 phase

motor.

> The Series 2 CNC is an altogether bigger beast and AFAIK there

isn't a

> manual equivalent. They usually take ISO 40 tooling with a

pneumatic

> drawbar. If I remember correctly drive is toothed belt from a DC

motor.

>
> Les
>
>
> Peter Reilley wrote:
>
> >This page has some pictures of Series I machines.
> >http://www.machinemanuals.net/web_pages/bridgeport%20series%201.htm
> >
> >This page has a picture of a Series II machine. The top one is

the classic

> >Series II.
> >http://www.machinemanuals.net/web_pages/bridgeport_series_2.htm
> >
> >Pete.
> >
> >
>