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Arboga Geared-head Drills

Instruction Manuals & Parts Lists are available for
most Arboga machines
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UM400 Miniature Combination Machine

During the 1950s and 1960s besides a selection of larger, radial-arm drills, Arboga also offered a range of heavy-duty, geared-head machines the E-135, E-830 and EST-830. All were based on a common, 4-speed , 4-Morse taper geared head driven by a 1-speed motor on the E-135 but a two-speed on the E-830 and EST-830. Both smaller drills had a 140 mm-diameter vertical column but the heaviest, the EST-830, was quite different and based on a substantial casting with a vertically-disposed, machined slide-way and a screw-lifted 635 mm x 400 mm (25" X 16") table with two T slots and a coolant channel. The two smaller drills both had rack-lifted tables; round and 400 mm in diameter on the E-135 and 500 mm by 400 mm rectangular on the two-speed E-830. Other tables were also available including: 500 mm x 400 mm; 600 mm x 500 mm and 800 mm x 590 mm, all with two parallel T slots and oil channels around the edge. In addition, for the two smaller drills, a special (and very useful) 500 mm x 500 mm table with a 3 T-slot angle plate front was manufactured and, at extra cost, a larger 600 mm x 570 mm base plate could be supplied instead of the standard 545 mm x 455 mm unit.
Spindle speeds on the E-135 ran through 100, 190, 340 and 649 rpm and a rather more satisfactory (though still rather slow) 80, 122, 160, 245, 290, 445, 580 and 890 rpm on the other two models. The drills were developed and refined during the 1970s and 1980s and, even though comparatively expensive, continued to find a market amongst those requiring a high quality, rugged and reliable machine tool..

The No. 4 Morse taper head fitted to all three models of drill was a common design with a built-in motor that drove directly into a 4-speed gearbox.

The standard 400 mm-diameter table of the E-135

The Model EST-830 drill was based on a substantial casting with a vertically-disposed, machined slide-way and a screw-lifted 635 mm x 400 mm (25" X 16") table with two T slots and a coolant channel.

500 mm by 400 mm rectangular table of the two-speed E-830.

A special (and very useful) 500 mm x 500 mm table with a 3 T-slot angle plate front was available as an option on the two smaller drills.

A larger 600 mm x 570 mm base plate could be supplied instead of the standard 545 mm x 455 mm unit.

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UM400 Miniature Combination Machine

An Instruction Manual & Parts List is available for this model

Arboga Geared-head Drills

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