The increased pressure upon Industry to comply with both environmental and health & safety legislation along with a need for improved plant reliability, has driven process equipment manufacturers to develop the next generation of product. The inherent double containment of a canned motor, along with its simplicity of design is one way in which these new stringent operating requirements can be met.

At the heart of a Hayward Tyler canned motor is a specially engineered squirrel cage induction electric motor that utilises the latest available motor interior materials to provide the most robust and reliable rotor / stator combination possible. For example while conventional motors rely upon class F insulation materials, Hayward Tyler canned motors use as a minimum class H materials, which by comparison provide greatly enhanced operating life.

Canned motors have a wide range of applications such as the primary driver for pumps, mixers and compressors. In all cases the motor components are shielded from the process fluid by non-magnetic cans, the stator can providing the primary containment of the process fluid. The outer body of the motor is constructed in compliance with the design pressure of the system in which it is to operate and provides the secondary boundary or double containment feature of the canned motor.

The one moving component in a canned motor, the rotor, is supported at either end on process lubricated plain bearings, while the process fluid also acts as a coolant for the rotor and stator. This design eliminates the need for either ball bearings or a motor fan, which inherently makes canned motors not only considerably quieter but also significantly more reliable than conventional motors. Most importantly the close coupled design eliminates the need for a dynamic mechanical seal between the motor and the driven equipment, which is key to meeting the ever more stringent environmental and health & safety standards imposed upon industry today.