MZ
Aluminum
- Joined
- Dec 31, 2005
- Location
- Providence, RI
Unsure if this is an appropriate forum;at least Abene is a Swedish link…
I followed a cryptic Craigslist ad for a "small Swedish mill" near Boston, and brought home an Arboga EM-825 mill/drill. I have googled the snot out of it and found a few useful posts on these mills, but I can find no information on this particular variation; hoping someone here can shed more light.
It looks a bit like the green one shown halfway down on Tony's site
Arboga milling machines
(that is, gear shifters on the right, large diameter column, smooth cast iron base).
The nameplate says "Made in Sweden." However it also shows that it's factory wired for 115V 60 Hz single phase, 3350/1680 RPM, 0.9/0.65 HP, 10.5/6.3A. The 8 spindle speeds on the shift chart run from 125 to 3480 RPM.
There are two large capacitors mounted inside the base, measuring 20 uF each, wired in parallel. I don't hear any click from a centrifugal switch or potential relay when it starts/stops, and the caps look like "run" types. So I surmise the motor may be configured as a PSC type. There's no "reverse", only off, low, and high speed on the 3-position drum switch. There are 7 wires from the motor to the drum, plus two from the capacitor bank. I traced connections for both speeds, but have not made a neat diagram yet.
The machine has inch dials and screws (.200"/rev on X and Y, .060"/rev on the fine quill feed). The table only has two T-slots, the middle feature being just an alignment groove, as a slot would interfere with the leadscrew. Both X and Y axes have large chromed ball handles.
The machine bears a metal plate with the name "Homestrand Machine Tool Corp., Greenwich, Connecticut," and came with another loose plate which reads "Arboga Sales and Service by Bridgeport" (with that last word rendered in the familiar script logo).
I've gathered and/or ordered all the documentation I can find, but would greatly appreciate any information at all about these. In particular, the single phase two-speed motor setup does not appear in any literature or posts I've discovered.
Thanks for reading,
Mike
P.S. incidentally the machine does run, pretty well in fact. Bearings and gears sound OK. It came with a factory MT3 spindle adapter to accept a set of six Swedish "Perman system" collets, 1/8" to 1/2", so it takes end mills and a straight shank drill chuck right out of the box. Axis alignment was odd, not sure everything is original, but I got it into tram with a couple shims.
I followed a cryptic Craigslist ad for a "small Swedish mill" near Boston, and brought home an Arboga EM-825 mill/drill. I have googled the snot out of it and found a few useful posts on these mills, but I can find no information on this particular variation; hoping someone here can shed more light.
It looks a bit like the green one shown halfway down on Tony's site
Arboga milling machines
(that is, gear shifters on the right, large diameter column, smooth cast iron base).
The nameplate says "Made in Sweden." However it also shows that it's factory wired for 115V 60 Hz single phase, 3350/1680 RPM, 0.9/0.65 HP, 10.5/6.3A. The 8 spindle speeds on the shift chart run from 125 to 3480 RPM.
There are two large capacitors mounted inside the base, measuring 20 uF each, wired in parallel. I don't hear any click from a centrifugal switch or potential relay when it starts/stops, and the caps look like "run" types. So I surmise the motor may be configured as a PSC type. There's no "reverse", only off, low, and high speed on the 3-position drum switch. There are 7 wires from the motor to the drum, plus two from the capacitor bank. I traced connections for both speeds, but have not made a neat diagram yet.
The machine has inch dials and screws (.200"/rev on X and Y, .060"/rev on the fine quill feed). The table only has two T-slots, the middle feature being just an alignment groove, as a slot would interfere with the leadscrew. Both X and Y axes have large chromed ball handles.
The machine bears a metal plate with the name "Homestrand Machine Tool Corp., Greenwich, Connecticut," and came with another loose plate which reads "Arboga Sales and Service by Bridgeport" (with that last word rendered in the familiar script logo).
I've gathered and/or ordered all the documentation I can find, but would greatly appreciate any information at all about these. In particular, the single phase two-speed motor setup does not appear in any literature or posts I've discovered.
Thanks for reading,
Mike
P.S. incidentally the machine does run, pretty well in fact. Bearings and gears sound OK. It came with a factory MT3 spindle adapter to accept a set of six Swedish "Perman system" collets, 1/8" to 1/2", so it takes end mills and a straight shank drill chuck right out of the box. Axis alignment was odd, not sure everything is original, but I got it into tram with a couple shims.
