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 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 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 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 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 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 535-0489
MarqueRS PRO
39,12 €
Each
Unité
1.8° 0.44Nm 4 2.8 V 42.3 x 42.3mm Hybrid, Permanent Magnet 5mm 1.68 A - 22mm 47mm - 1.65Ω -
N° de stock RS 535-0502
MarqueRS PRO
81,79 €
Each
Unité
0.9° 1.26Nm 4 2.5 V 56.4 x 56.4mm Hybrid, Permanent Magnet 6.35mm 2.8 A Unipolar 19mm 56mm - 0.9Ω -
N° de stock RS 535-0467
MarqueRS PRO
31,61 €
Each
Unité
1.8° 0.22Nm 4 2.8 V 42.3 x 42.3mm Hybrid, Permanent Magnet 5mm 1.33 A - 22mm 33mm - 2.1Ω -
N° de stock RS 440-464
MarqueRS PRO
107,65 €
Each
Unité
1.8° 1.2Nm 8 3 V dc 82.6 x 82.6mm Hybrid 9.5mm 2 A Unipolar 121.4mm 62.5mm - 1.5Ω -
N° de stock RS 918-0849
MarqueRS PRO
16,74 €
Each
Unité
15° 10mNm 4 24 V 42mm Permanent Magnet 2mm - Unipolar 6.5mm 24.5mm - 500Ω -
N° de stock RS 440-470
MarqueRS PRO
136,95 €
Each
Unité
1.8° 2.2Nm 8 2.5 V dc 82.6 x 82.6mm Hybrid 9.5mm 4.5 A - 152.9mm 94mm - 0.56Ω -
N° de stock RS 535-0344
MarqueRS PRO
71,16 €
Each
Unité
1.8° 60mNm 4 3.8 V 28 x 28mm Hybrid, Permanent Magnet 5mm 670 mA - 18mm 32mm - 5.6Ω -
N° de stock RS 191-8362
MarqueRS PRO
61,72 €
Each
Unité
1.8° 0.88Nm 8 5.4 V dc 56.4 x 56.4mm Hybrid 6.35mm 1.4 A - 116.6mm 76mm - 3.6Ω -
N° de stock RS 535-0423
MarqueRS PRO
87,44 €
Each
Unité
1.8° 1.0Nm 4 2.3 V 56.4 x 56.4mm Hybrid, Permanent Magnet 6.35mm 2.8 A - 19mm 51mm - 0.83Ω 35mNm
N° de stock RS 892-8741
MarqueRS PRO
220,53 €
Each
Unité
1.8° 2.2Nm 8 4.17 V, 6 V, 8.4 V 60 x 60mm Hybrid, Permanent Magnet 7.5mm 2 A Parallel, Series, Unipolar 22.4mm 110mm 1 -
N° de stock RS 918-0837
MarqueRS PRO
27,19 €
Each
Unité
7.5° 36mNm 2 12 V 59.8mm Permanent Magnet 3mm - Unipolar 7mm 31mm - 251Ω -
N° de stock RS 918-0846
MarqueRS PRO
41,86 €
Each
Unité
15° 72mNm 4 24 V 59.8mm Permanent Magnet 3mm - Unipolar 7mm 60mm - 122Ω -
N° de stock RS 535-0439
MarqueRS PRO
91,40 €
Each
Unité
1.8° 1.26Nm 4 2.5 V 56.4 x 56.4mm Hybrid, Permanent Magnet 6.35mm 2.8 A - 19mm 56mm - 0.9Ω 42mNm
N° de stock RS 535-0445
MarqueRS PRO
99,58 €
Each
Unité
1.8° 1.89Nm 4 3.2 V 56.4 x 56.4mm Hybrid, Permanent Magnet 6.35mm 2.8 A - 19mm 76mm - 1.13Ω 72mNm
N° de stock RS 180-5295
MarqueRS PRO
240,42 €
Each
Unité
1.8° - 4 2.56 V 85.85 x 85.85mm Hybrid 12.7mm 5.5 A - 30.23mm 96mm - 0.46Ω -