Eddy-Current Brakes

Air Cooled Eddy-Current Brakes

The Dynamatic® Air-Cooled, Adjustable Torque Eddy-Current Brakes consist of a rotating member (rotor), keyed to a straight-through double extension shaft, and a stationary brake coil. The brake imposes controlled deceleration at variable speeds. There is no physical contact between rotating and stationary members. This results in smooth response, thereby eliminating shock loading and extending equipment life. These brakes may be equipped with an optional tachometer generator mounted externally to provide a feedback signal to the brakes controller. The controller provides the DC excitation for the brake coil. The feedback signal from the tachometer generator is compared against a reference signal within the controller to provide accurate, smooth, controlled braking or constant speed throughout the period of excitation. Constant torque can be obtained with highly accurate torque adjustments. The controllers for the brakes are described in the Product Catalog.

Liquid Cooled Eddy-Current Brakes

Liquid cooled eddy-current brakes consist of a rotating member (rotor), keyed to a straight-through double extension shaft, a stationary brake coil and an automatic water piping flow-through cooling system. The Eddy-Current brake imposes controlled deceleration at variable speeds. With the Eddy-Current principle of torque transmission, there is not physical contact between input and stationary members. This results in smooth response, thereby eliminating shock loading and extending equipment life. Eddy-Current brakes may be equipped with an optional tachometer generator mounted internally to provide a feedback signal to the brake’s controller. The controller provides the DC excitation for the brake coil. The feedback signal from the tachometer generator is compared against a reference signal within the controller to provide accurate, smooth, controlled braking or constant speed throughout the period of excitation. Constant torque can be obtained with highly accurate torque adjustments.