HAUSER (Made In Switzerland) High-Precision Jig Grinder
Model #3SM S/N: 113
"The Type 3SM jig grinder had a 550 x 320 mm (21.5" x 12.5") table with a
longitudinal travel of 400 mm (16") and a transverse of 250 mm (10").
The vertical slide could be elevated through a distance of 400 mm (16")
to give a maximum clearance between spindle nose and table of 470 mm "18.5").
Table positions were measured by hardened, ground and stress-relieved precision
leadscrews fitted with massive (and illuminated) micrometer drums and
vernier scales. In addition, an automatic vernier scale automatic compensation
device was fitted, the operation of which is described in the opening to the
Hauser section (above). The micrometer dials read to 0.01 mm (0.001")
and the verniers to 0.001 mm (0.0001") with the makers guaranteeing an
accuracy of setting to within 0.003 mm (0.00015").
Able to grind bores up to approximately 190 mm (7.5") and driven directly
by a top-mounted electric motor, the oil-mist lubricated grinding head
could have the following movements infinitely varied: rotational speed
from 16,000 to 80,000 r.p.m.; axial stroke between 5 and 90 mm (3/16" and 3.5");
a reciprocating motion of up to 1.8 m/min (6-ft/min) and a planetary action
action that could be set between 10 and 300 r.p.m. - the last two being driven
hydraulically. In addition, the head could be set to automatically
disengage the in-feed at a pre-set diameter."
"Acu-Rite" Flat Panel 2-Axis Digital Readout Display
Jig Grinding Head
** Superb Condition & Appearance - All Original **
** Updated with Digital Readout Display **
** Inspect Under Power in our Harrison, New Jersey Warehouse **