email: tony@lathes.co.uk
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"Avia" & "Polamco" FND-25 & FND-32 Precision Universal Milling Machines
- by Fabryka Obrabiarek Precyzyinych -

Avia Home Page and Model FNC-25


Built with the same general arrangement as the smaller FNC25, the FND-25 and FND-32 were much more massive, weighing, at 1400 and 1600 kg respectively, considerably more. They were also available with a wider range of accessories (most of the same design as used on the FNC-25)  and, in order to cope with the extra loads and higher speeds likely to be encountered by this class of machine, fitted with two drive motors. One, flange-mounted on the back of the sliding ram (rather than inside the column as on the FNC Models)  turned the cutter spindle gearbox and was rated at 1,5 kW on the Model 25 and 2.2 kW on the Model 32 while the other, held within the base on an adjustable plate, powered the table feeds and was sized at 1.5 k on both machines.  The mounting of the spindle-drive motor on the ram was similar in arrangement to that used on the Ferrari MR2 and also resembling those offered by makers such as Cincinnati, Parkson, Arno and Riva, etc. when a need arose to convert their horizontal milling machines into ram-type verticals. Early versions of the  millers were supplied with a separate electrical cabinet, late models were usually supplied with pendant control box that could be swung to any convenient working position.
FND-25
Fitted with an ISO40 nose, the horizontal spindle head had a travel of 350 mm under power and 360 mm by hand. The 18 rates of power feed varied from 8 to 400 mm per minute, with rapids set at a single rate of 1250 mm per minute. 18 spindle speeds were provided, ranging from a low of 40 to a maximum of 2000 r.p.m. Listed as the
Type Dfg, the standard vertical head was bolted to the end of the overarm normally used to support a horizontal milling arbor - this arrangement lifting the head to give a useful increase in work capacity to an absolute maximum height of around 405 mm.
Made as part of the knee, the 250 x 850 mm vertical table had three 14 mm horizontal T-slots set on 63 mm centres with 18 rates of horizontal and vertical feed available, from 8 to 400 mm per minute. Travels horizontally of 400 mm and 420 mm respectively were available under power or by hand - and vertically of 380 mm by power and 400 mm by hand. Rapids were fitted to both movements at the rate of 1250 mm per minute - which was rather too fast for safety in the vertical direction. When equipped with an optical measuring system, table travels were all reduced by approximately 20 mm.
Fitted as part of the standard equipment was a choice of two plain rectangular tables: the 250 mm x 800 mm
Type Dsn or 300 x 850 mm Type Dsp. Two Universal tilting and swivelling tables were also offered, the conventional Type Dsu3 and the unusual Type Dsr3, the latter screw driven to provide a lateral feed. Both had  five 14 mm T-slots on 63 mm spacing and with swivel angles of 360° around their vertical axis, 30° each side of the longitudinal and 45° around the traverse.
FND-32
Fitted with an ISO40 nose, the horizontal spindle head had a travel of 380 mm under power and 400 mm by hand. The 18 rates of power feed varied from 10 to 500 mm per minute, with rapids set at a single rate of 1600 mm per minute. 18 spindle speeds were provided, ranging from a low of 35.5 to a maximum of 1800 r.p.m. Listed as the
Type Dfg, the standard vertical head was bolted to the end of the overarm normally used to support a horizontal milling arbor - this arrangement lifting the head to give a useful increase in work capacity to an absolute maximum height of 475 mm.
Made as part of the knee, the 280 x 1100 mm vertical table had three 14 mm horizontal T-slots set on 63 mm centres with 18 rates of horizontal and vertical feed available, from 10 to 500 mm per minute. Travels horizontally of 580 mm and 600 mm respectively were available under power or by hand - and vertically of 410 mm by power and 425 mm by hand. Rapids were fitted to both movements at the rate of 1600 mm per minute - which was rather too fast for safety in the vertical direction. When equipped with an optical measuring system, table travels were all reduced by approximately 20 mm.
Fitted as part of the standard equipment was a choice of two plain rectangular tables: the 315 mm x 900 mm
Type Dsn or 400 x 800 mm Type Dsp. Two Universal tables were also offered, the conventional Type Dsu3 with a working area of 315 x 630 mm and the unusual 280 x 630 mm Type Dsr3 with a feed screw that gave a lateral feed. Both had  five 14 mm T-slots on 63 mm spacing and with swivel angles of 360° around their vertical axis, 30° each side of the longitudinal and 45° around the traverse. .

Avia FND-25 and FND-32 with the Type Dgf Vertical Milling Head and Type Dsp/Dsn Horizontal Table

Standard version of the FND-32 with a cutter-arbor support drop bracket on the end of the overarm


Avia FND-32 fitted with the optional electrical control pendant Type Dws3 and Type Dsom Rotary table

Unlike many competing makes, the Avia did not have bellows to cover the table ways


The unusual 280 x 630 mm Type Dsr3 Universal Table with a feed screw that gave a lateral feed.


Avia Home Page and Model FNC-25

email: tony@lathes.co.uk
Home Page   Machine Tool Archive   Machine Tools for Sale & Wanted 
Machine Tool Manuals  Machine Tool Catalogues   Belts

"Avia" & "Polamco" FND-25 & FND-32 Precision Universal Milling Machines
- by Fabryka Obrabiarek Precyzyinych -