Size and physical dimensions of a NEMA 17 stepper motor
Monday October 01, 2018 01:00 AM To Wednesday October 31, 2018 01:00 AM
Newyork, US
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Event Details
The Mosaic stepper motor (part no. STEPMOT-1) is a four phase, unipolar, permanent magnet stepper motor. It is a standard size, 200-steps-per-revolution, NEMA 17 (1.7 in. square footprint, 5 mm shaft diameter), 12 V mnema 17 Motor. This motor, like most stepper motors is a permanent magnet motor. The Mosaic stepper is typical of common high resolution motors – a full revolution requires 200 steps, while each step turns the shaft only 1.8° for a full step, or 0.9° in half-stepping mode. This sized motor is commonly used in household appliances, medical equipment, stage lighting devices, and in various industrial control applications.
The following are the specifications of the motor:
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The motor has six wires, connected to two split windings as is common for unipolar stepper motors:
In use, the center taps of the windings are typically wired to the positive supply, and the two ends of each winding are alternately grounded through a drive circuit to reverse the direction of the field provided by that winding. The Motor Wiring Diagram also illustrates the order of the stator poles in the motor: A
, B
, A’
, B’
. This is the order in which they must be energized to cause the motor to step in a specified direction (clockwise or counterclockwise).
The motor physical dimensions are shown in the following figure. The motor is 1.7” square, 1.5” long, with a 5 mm shaft. Mounting holes take 3 mm dia., 0.5 mm pitch metric screws. Four screws are installed in the back side of the motor. Two diagonally mounted screws are 40 mm long and extend 5.5 mm through the front side and two are 30 mm long and leave a 4.5 mm deep threaded socket in the front.
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