VlBCO’s Model SPR, SPRT, SPWT and CE electric motor vibrators are specially developed for the thousands of applications where only a small shake is necessary, but big vibrator reliability is a must. For activating small hoppers, screens, chutes, tables, filling machines, etc. Controlled flow is obtained on all types of materials, including fine powders, flakes, pills, bottle caps and jars, etc. Speed and force can be adjusted on most models with simple rheostats or speed adjusters. Completely noiseless operation (no more sound than a fan motor) makes these vibrators desirable in applications where noise is irritating or fatiguing for the employee.