Results of tests running in Department of Mining Machines and Waste Utilisation Equipment indicated that if dynamics parameters of the propulsive of the concentrating table arę higher than obtaining effects of separation are better. One of the moderns propulsive of concentrating table is Concenco propulsive. That vibrator characterises rather smali influences on a table and has rather Iow dynamic parameters with characteristic acceleration ratio 2. In presented paper the authors tried to improve dynamic of Concenco vibrator through modifications of construction, that consist in adjustment of added smali pair of non-weigh masses. After analysis and consideration of dynamic of concentrating table it was indicated that rather uncomplicated propulsive can obtain better acceleration ratio up to 3. That value considerable exceeds values obtained with most commonly used such tables solutions. In presented paper, there are indicated detailed parameters with which it is able to obtain maximum value of acceleration.