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VIBRATORY TUMBLERS
THE MT-4 MINI-SONIC
VIBRATORY TUMBLER
It’s unique tumbling operation is the key
to the high performance of the MT-4. The
vibratory motion is achieved without any
moving parts. It improves the polishing
process and uses only a small amount of
abrasives compared to ordinary tumblers.
Load capacity is approximately four pounds
including stone, fillers and abrasives.You con-
trol the rotation and intensity of the tumbler
operation with solid state electronic controls.
Hoppers give exceptionally long wear. They
are made of cast plastisol.With no motor, belts
or pulleys to worry about, you have a tumbler
built for years of worry free service.
The MT-4 Mini-Sonic Tumbler operates without shafts, belts,
pulleys, eccentric weight or even a motor—no moving parts,
so the MT-4 will far outlast other types of tumblers. It operates
on a unique principle employing interrupted electrical cur-
rent that provides vibration as the driving force powering the
rotation of the load. Operating frequency is 3600 vibrations
per minute on 60Hz models and 3000 vibrations per minute in
50Hz Export models.
Rotation and intensity is adjustable with solid state electronic
controls. During rotation, the tumbling load is alternately sepa-
rated and compacted during each vibratory cycle. This improves
the tumbling process and allows fresh abrasive to be drawn in
between materials in the tumbler hopper. Only the contents
inside the hopper actually rotate while the hopper itself remains
practically motionless except for the driving arc of motion.
Only a small amount of abrasives are required in the
Mini-Sonic tumbling process compared to ordinary rotary tum-
blers. As the abrasive begins to pulverize or break down and
HOW THE MT-4 WORKS
The MT-4 Mini-Sonic Tum-
bler is the best all-around
tumbler on the market when it
comes to performance, easy
operation, and long-lasting
service.You can tumble polish
almost any kind of stone, from
opal to topaz, delicate carvings
and preforms, as well as metal
items such as coins, jewelry
findings, shell casings, etc.
NOTE: when polishing with Vibra-Dry
compounds, no water is required, and you will
not have the slurry described above.
Shp. Wt.
MT-4
115V 432-004
283 .00 11 lbs.
MT-4 *Export
220V 432-004-X 304.00 11 lbs.
MT-4 *Export
240V 432-004-XA 312.00 11 lbs.
Hopper -4 w/ lid
433-04H
59.00 2 lbs.
Hopper lid
Fits All Hoppers 433-04L
18.50 8 ozs.
Tune up Kit
MT-4
490-402097
49.25 7 ozs.
Model
Voltage
Order #
Price
Fits All
Models
* Export models come 220 or 240 Volt. Specify voltage or
country of ultimate destination when ordering.
combines with rock dust and water, a slurry or
coating mixture is formed, and it is this coat-
ing which should be maintained throughout
all the tumbling processes. Too much water
or too much abrasives will cause materials to
collect in the bottom of the hopper and not
rotate properly. It is only necessary to main-
tain a thin coating of abrasive slurry between
the materials in the load to keep the polishing
process working properly.