DYNAMIC ABSORBER DRIVES ROTEX drives are designed for long term, trouble-free service with minimal maintenance required. ROTEX Screeners utilize a patented counterbalanced motion to drive the screen box, providing smooth, quiet operation for years of dependable service.

On smaller ROTEX models, the counterbalancing is achieved by a single rotating weight. On larger machines, dual weight drives are used to counterbalance the out-of-balance forces of the screen box. These dual-weight drives are offered in two types”

Dual Counter-Rotating Weights
ROTEX introduced the dual weight drive to solve the problem of balancing larger screeners. It uses two weights, a major and a minor, driven by a pinion shaft through spiral bevel gears.

Dynamic Absorber
The patented Dynamic Absorber drive combines the counterbalancing effect of a dual weight drive with the simplicity of a single weight drive. The dynamic absorber is harmonically tunes to the operating frequency of the screener to absorb the excess forces generated by the screener’s motion. The absorber itself is simply a set of weight plates suspended by leaf springs on the sides of the drive. It is not motor driven; rather it absorbs energy when set in motion by the machine’s natural base movement.

Dynamic Absorber Drives 60K PDF