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Cutting & Polishing Machinery > Tumbling > Tumbling Machines Price: QTY:          MT-4 Mini Sonic Vibratory Tumbler   The  MT4-SV MINI SONIC VIBRATORY TUMBLER The MT4-SV Mini-Sonic Tumbler is the best all round 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 pre-forms as well as metal items such as coins, jewellery findings, shell casings, etc. Its unique tumbling operation is the key to the high performance of the MT-4SV. 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. The MT4-SV operates without shafts, belts, pulleys, eccentric weights or even a motor - no moving parts to wear out. It operates on a unique principal employing interrupted electrical current that provides vibration as the driving force powering the rotation of the load. Operating frequency is in excess of 3,500 vibrations per minute. Load capacity is approximately 1.8kg including stone, filler and abrasives. You control the rotation and intensity of the tumbler operation with solid state electronic controls. The hoppers give exceptionally long wear. They are made of cast poly-vinyl, while the tumbler housing is durable ABS plastic. If you purchase one of these tumblers you will get years of worry free service.