DC motors use direct current instead of AC current. This current does not change direction and is determined by the polarity of the source.
You may understand direct current in your regular life as the type that is produced by batteries. In industrial applications, the AC current from your power company is supplied to the factory and changed to DC through power supplies or SCRs.
These are more complex and more costly to operate than AC motors, but they can operate at adjustable speed when connected to relatively simple controllers. AC induction motors require much more robust drives in order to adjust speed.
Available in round frame and unique laminated square frames, Baldor-Reliance® DC motors offer performance and reliability in tough applications. Round frame DC motors utilize permanent magnet technology optimizing the commutator, brushes and inertia to assure the best performance possible. Wound field motors are designed with high-performance molded commutators that provide superior commutation throughout the speed range to ensure trouble-free operation. The insulation system is designed with an extra margin of safety to eliminate performance-limiting hot spots.
Leeson Sub-Fractional Motor:
- 0.17HP
- Compact and space saving design.
- External access to brushes supprots easy replacement for prolonged motor life.
- Double-shielded ball bearings provide longer service life.
- Reversible rotation allows greater flexibility within the application.
- High starting torque on start-up, to achieve a higher starting load required in sub-fractional applications.
