MOTION SYSTEMS HANDBOOK
Fundamentals of
gearmotors
Gearmotors are combinations of an electric motor (either ac or dc) with a gear reducer integrated together into one unit. They can be bought direct from manufacturers as integrated units, saving designers the effort of integrating separately purchased motors with gear reducers.
These A and F Series helical parallel shaft gearmotors and speed reducers from DieQua feature torque capacities up to 2,800 Nm (2,065 ft lb) for Series A, and up to 14,000 Nm (10,325 ft lb) for series F.
There are as many gearmotor types as there are combinations of electric motors and gears. Motor type – these can be ac or dc, brushed or brushless, or permanent magnet. Often times the application will determine which motor is best suited for that particular task. In general, brushless dc gearmotors have really good speed regulation properties, so they’re usually preferred in applications requiring tight variable speed control. However, ac gearmotors have gotten better at speed control and they are now competitive with many dc gearmotors.
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DESIGN WORLD — MOTION
Gearmotors — Motion Control HB 08-19.indd 100
8 • 2019
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