Why High Cycle

High Cycle Vibrators get their name from the kind of electric current (180 cycle) required to operate them. A 180 cycle vibrator motor uses alternating current which reverses direction 180 times per second, compared to standard commercial current which reverses direction 60 times per second. This means that the motor in a High Cycle Vibrator runs three times faster and develops three times more power than an ordinary 60 cycle motor. The result is sufficiently high frequency and vibrating force in a small diameter head to compact low-slump concrete effectively in a relatively wide radius, so concrete placing jobs get done better and faster.

Minnich High Cycle Vibrators have received worldwide acceptance and preference because of their service-proven design and engineering, perfected by an experienced engineering-manufacturing organization that is thoroughly experienced in both concrete and vibration. Minnich High Cycle Vibrators are recognized as the standard in the industry. Minnich manufactures, tests, checks and double checks each part, assembly and end product in order to ensure complete quality and satisfaction.

What are the advantages over a universal motor? The motor in a High Cycle Vibrator is of the induction type. It maintains its speed within a few hundred rpm when under full load. This means if the vibrator has a frequency of 10,800 vpm (60sec x 180rpm/sec) when running in air, it will lose only a few hundred vpm when operated in stiff concrete.

Contrast this to the universal motor-driven vibrator, which loses frequency as the load increases. The stiffer the concrete, the more it restrains the vibrator’s movement and slows down the vpm. This means that the universal motor vibrator performs in the opposite way that a vibrator should perform to be most effective, while the High Cycle Vibrator maintains its vpm in stiff concrete.

Simplicity of construction is another plus for the High Cycle design. There are no brushes and no commutator. The only wearing parts are the bearings and the shaft extension on the rotor. The design permits rapid convection of heat, so there is no problem with armature burn-out so common in universal motors.