Stepper Motors

A stepper motor is used as an output in electronic circuits. The motor is a brushless DC electric motor that divides a full rotation into a number of equal steps.

The motor’s position can then be made to move and hold at one of these steps without any position sensor for feedback as long as the motor is carefully sized to the application in respect to torque and speed.

Multiple coils are organised in phases (groups). By energising each phase in sequence the motor will rotate, one step at a time.

Why and when to use a Stepper Motor?

With a computer controlled stepping you can achieve very precise positioning and/or speed control.
•Steppers move in precise repeatable steps, they are perfect to use where precise positioning is needed such as 3D printers, CNC and camera platforms.


•Some disk drives use stepper motors to position the read/write head.


•Precise increments of movement also allow for excellent control of rotational speed for process automation and robotics.


•A Stepper motor has maximum torque at low speeds, so they are a good choice for applications where low speed with high precision is needed.



Stepper motor types
•Bipolar drivers use H bridge circuitry to reverse the current flow through the phases. By energising the phases with alternating the polarity all the coils can be put to work turning the motor.


•Permanent magnet motors use a permanent magnet in the rotor. They operate based on the principle that minimum reluctance occurs with minimum gap, meaning the rotor points are attracted towards the stator magnet poles.


•Unipolar drivers always energise the groups in the same way. The common lead will always be negative. They can be implemented with simple transistor circuitry.



Advantages of step motors
•Low cost


•High reliability


•High torque at low speed


•Full torque at standstill

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Description Prix Step Angle Holding Torque Number Of Wires Voltage Rating Frame Size Stepper Motor Type Shaft Diameter Current Rating Winding Arrangement Shaft Length Depth Number of Pole Pairs Resistance Per Phase Detent Torque
N° de stock RS 829-3525
Référence fabricant103H7126-5740
MarqueSanyo Denki
72,70 €
Each
Unité
1.8° 1.6Nm 4 24 V dc 56 x 56mm Hybrid 6.35mm 2 A Bipolar 19.1mm 77.3mm - -
N° de stock RS 455-2549
Référence fabricant53467
23,83 €
Each
Unité
7.5° 3mNm - 12 V dc 36mm Bipolar, Unipolar - - Unipolar - - 2 - -
N° de stock RS 440-262
Référence fabricant82910003
MarqueCrouzet
36,96 €
Each
Unité
7.5° 20mNm 6 12.7 V dc - Permanent Magnet 2mm 190 mA Unipolar 7.8mm 21.7mm 2 66Ω -
N° de stock RS 535-0401
MarqueRS PRO
56,11 €
Each
Unité
0.9° 0.44Nm 4 2.8 V 42.3 x 42.3mm Hybrid 5mm 1.68 A - 24mm 47mm - 1.65Ω -
N° de stock RS 440-284
Référence fabricant82920012
MarqueCrouzet
39,28 €
Each
Unité
7.5° 57mNm 6 12.9 V - Permanent Magnet 2mm 280 mA Unipolar 7.4mm 25.6mm 2 46Ω -
N° de stock RS 191-8299
MarqueRS PRO
29,09 €
Each
Unité
1.8° 0.10Nm 6 12 V dc 40 x 40mm Hybrid 5mm 400 mA Unipolar 53mm 33mm - 30Ω -
N° de stock RS 535-0338
MarqueRS PRO
60,46 €
Each
Unité
1.8° 17.5mNm 4 3.96 V 20.2 x 20.2mm Hybrid, Permanent Magnet 4mm 600 mA - 5mm 33mm - 6.5Ω -
N° de stock RS 892-8726
MarqueRS PRO
84,21 €
Each
Unité
1.8° 30mNm 4 4.32 V 20.2 x 20.2mm Hybrid, Permanent Magnet 4mm 800 mA - 5mm 48.5mm 1 5.4Ω -
N° de stock RS 440-442
MarqueRS PRO
38,70 €
Each
Unité
1.8° 0.50Nm 8 5.1 V dc 56.4 x 56.4mm Hybrid 6.35mm 1 A Unipolar 91.1mm 50.5mm - -
N° de stock RS 191-8340
MarqueRS PRO
39,86 €
Each
Unité
1.8° 0.49Nm 8 12 V dc 56.4 x 56.4mm Hybrid 6.35mm 480 mA - 91.1mm 50.5mm - 25Ω -
N° de stock RS 829-3500
Référence fabricant103H5210-5240
MarqueSanyo Denki
47,95 €
Each
Unité
1.8° 0.51Nm 4 24 V dc 42 x 42mm Hybrid 5mm 1 A Bipolar 22.5mm 49.5mm - 4.8Ω -
N° de stock RS 535-0372
MarqueRS PRO
46,21 €
Each
Unité
0.9° 2.2mNm 4 2.8 V 42.3 x 42.3mm Hybrid, Permanent Magnet 5mm 1.33 A - 22mm 33mm - 2.1Ω -
N° de stock RS 351-4580
Référence fabricant42M048C-1U
34,00 €
Each
Unité
7.5° 66mNm 6 5 V dc - Permanent Magnet 3mm 550 mA Unipolar 9.88mm 22mm 2 9.1Ω -
N° de stock RS 829-3522
Référence fabricant4835728-1
MarqueSanyo Denki
2,94 €
Each
Unité
- - 4 - - Bipolar, Unipolar - - Unipolar - - - - -
N° de stock RS 878-7742
Référence fabricantSM2863-5251
MarqueSanyo Denki
350,42 €
Each
Unité
1.8° 9.0Nm 4 100 V ac 85.5 x 85.5mm Single Shaft 14mm 6 A Bipolar 28.5mm 128.5mm - 0.46Ω -
N° de stock RS 878-7685
Référence fabricant103H7823-5740
MarqueSanyo Denki
97,81 €
Each
Unité
1.8° 2.7Nm 6 24 V dc 60 x 60mm Single Shaft 8mm 2 A Bipolar 19.1mm 87.3mm - 9.5Ω -
N° de stock RS 892-8732
MarqueRS PRO
33,65 €
Each
Unité
1.8° 0.36Nm 4 2.8 V 42.3 x 42.3mm Hybrid, Permanent Magnet 5mm 1.68 A - 22mm 62mm 1 1.65Ω -
N° de stock RS 829-3540
Référence fabricantSP2563-5160
MarqueSanyo Denki
171,50 €
Each
Unité
1.8° 1.0Nm 4 24 V dc 56 x 56mm Hybrid 6.35mm 2 A Bipolar 19.1mm 81.5mm - 1.5Ω -
N° de stock RS 878-7673
Référence fabricant103H7823-1740
MarqueSanyo Denki
97,81 €
Each
Unité
1.8° 2.7Nm 4 24 V dc 60 x 60mm Single Shaft 8mm 4 A Bipolar 19.1mm 87.3mm - 2.4Ω -
N° de stock RS 368-0261
Référence fabricant15M020D-1B
14,83 €
Each
Unité
18° 3.9mNm 4 5 V - Permanent Magnet 1.5mm 125 mA Bipolar 8.5mm 15.11mm 2 40Ω -