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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Omschrijving Prijs 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
RS-stocknr. 829-3525
Fabrikantnummer103H7126-5740
FabrikantSanyo Denki
72,70 €
Each
Aantal stuks
1.8° 1.6Nm 4 24 V dc 56 x 56mm Hybrid 6.35mm 2 A Bipolar 19.1mm 77.3mm - -
RS-stocknr. 455-2549
Fabrikantnummer53467
FabrikantJohnson Electric
23,83 €
Each
Aantal stuks
7.5° 3mNm - 12 V dc 36mm Bipolar, Unipolar - - Unipolar - - 2 - -
RS-stocknr. 440-262
Fabrikantnummer82910003
FabrikantCrouzet
36,96 €
Each
Aantal stuks
7.5° 20mNm 6 12.7 V dc - Permanent Magnet 2mm 190 mA Unipolar 7.8mm 21.7mm 2 66Ω -
RS-stocknr. 191-8299
FabrikantRS PRO
29,09 €
Each
Aantal stuks
1.8° 0.10Nm 6 12 V dc 40 x 40mm Hybrid 5mm 400 mA Unipolar 53mm 33mm - 30Ω -
RS-stocknr. 535-0338
FabrikantRS PRO
60,46 €
Each
Aantal stuks
1.8° 17.5mNm 4 3.96 V 20.2 x 20.2mm Hybrid, Permanent Magnet 4mm 600 mA - 5mm 33mm - 6.5Ω -
RS-stocknr. 440-284
Fabrikantnummer82920012
FabrikantCrouzet
39,28 €
Each
Aantal stuks
7.5° 57mNm 6 12.9 V - Permanent Magnet 2mm 280 mA Unipolar 7.4mm 25.6mm 2 46Ω -
RS-stocknr. 535-0401
FabrikantRS PRO
56,11 €
Each
Aantal stuks
0.9° 0.44Nm 4 2.8 V 42.3 x 42.3mm Hybrid 5mm 1.68 A - 24mm 47mm - 1.65Ω -
RS-stocknr. 892-8726
FabrikantRS PRO
84,21 €
Each
Aantal stuks
1.8° 30mNm 4 4.32 V 20.2 x 20.2mm Hybrid, Permanent Magnet 4mm 800 mA - 5mm 48.5mm 1 5.4Ω -
RS-stocknr. 440-442
FabrikantRS PRO
38,70 €
Each
Aantal stuks
1.8° 0.50Nm 8 5.1 V dc 56.4 x 56.4mm Hybrid 6.35mm 1 A Unipolar 91.1mm 50.5mm - -
RS-stocknr. 191-8340
FabrikantRS PRO
39,86 €
Each
Aantal stuks
1.8° 0.49Nm 8 12 V dc 56.4 x 56.4mm Hybrid 6.35mm 480 mA - 91.1mm 50.5mm - 25Ω -
RS-stocknr. 829-3500
Fabrikantnummer103H5210-5240
FabrikantSanyo Denki
47,95 €
Each
Aantal stuks
1.8° 0.51Nm 4 24 V dc 42 x 42mm Hybrid 5mm 1 A Bipolar 22.5mm 49.5mm - 4.8Ω -
RS-stocknr. 535-0372
FabrikantRS PRO
46,21 €
Each
Aantal stuks
0.9° 2.2mNm 4 2.8 V 42.3 x 42.3mm Hybrid, Permanent Magnet 5mm 1.33 A - 22mm 33mm - 2.1Ω -
RS-stocknr. 351-4580
Fabrikantnummer42M048C-1U
34,00 €
Each
Aantal stuks
7.5° 66mNm 6 5 V dc - Permanent Magnet 3mm 550 mA Unipolar 9.88mm 22mm 2 9.1Ω -
RS-stocknr. 829-3522
Fabrikantnummer4835728-1
FabrikantSanyo Denki
2,94 €
Each
Aantal stuks
- - 4 - - Bipolar, Unipolar - - Unipolar - - - - -
RS-stocknr. 878-7685
Fabrikantnummer103H7823-5740
FabrikantSanyo Denki
97,81 €
Each
Aantal stuks
1.8° 2.7Nm 6 24 V dc 60 x 60mm Single Shaft 8mm 2 A Bipolar 19.1mm 87.3mm - 9.5Ω -
RS-stocknr. 878-7742
FabrikantnummerSM2863-5251
FabrikantSanyo Denki
350,42 €
Each
Aantal stuks
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 -
RS-stocknr. 892-8732
FabrikantRS PRO
33,65 €
Each
Aantal stuks
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 -
RS-stocknr. 829-3493
Fabrikantnummer103H5208-0440
FabrikantSanyo Denki
40,31 €
Each
Aantal stuks
1.8° 0.30Nm 6 24 V dc 42 x 42mm Hybrid 5mm 1.2 A Unipolar 22.5mm 40.5mm - 2.9Ω -
RS-stocknr. 440-290
Fabrikantnummer82930015
FabrikantCrouzet
42,69 €
Each
Aantal stuks
7.5° 0.16Nm 6 12.5 V - Permanent Magnet 4mm 390 mA Unipolar 14.4mm 35.4mm 2 32Ω -
RS-stocknr. 878-7730
FabrikantnummerSM2863-5151
FabrikantSanyo Denki
350,42 €
Each
Aantal stuks
1.8° 9.0Nm 4 100 V ac 85.5 x 85.5mm Single Shaft 14mm 4 A Bipolar 28.5mm 128.5mm - -
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