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Details
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Characteristics
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Advantages
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Permanent magnet DC design
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Essentially linear torque/speed curve, with torque proportional to current and speed proportional to voltage
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Ease of speed and position control.
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Brushless design
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Life is not limited by brush wear but only by wear in ball bearings
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Very long life, high reliability, insensitive to environment. No arcing, dust free. Reduced audible and electrical noise
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Static winding attached to motor housing
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Improved heat dissipation
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Overload capability
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Slotless configuration
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No detent torque
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Excellent velocity smoothness
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Versions without hall sensor
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Typically used in spindle applications
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Cost effective. Less sensitive to environment. Only three connecting wires.
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Versions with hall effect sensors
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Typically used in applications where speed or load variation are needed.
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Very simple commutation circuitry.
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Versions with encoder or resolver
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Typically used in incremental motion.
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Very precise speed and position control.
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