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. 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. 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. 440-442
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. 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. 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. 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. 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. 535-0467
FabrikantRS PRO
31,61 €
Each
Aantal stuks
1.8° 0.22Nm 4 2.8 V 42.3 x 42.3mm Hybrid, Permanent Magnet 5mm 1.33 A - 22mm 33mm - 2.1Ω -
RS-stocknr. 535-0502
FabrikantRS PRO
81,79 €
Each
Aantal stuks
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 -
RS-stocknr. 535-0489
FabrikantRS PRO
39,12 €
Each
Aantal stuks
1.8° 0.44Nm 4 2.8 V 42.3 x 42.3mm Hybrid, Permanent Magnet 5mm 1.68 A - 22mm 47mm - 1.65Ω -
RS-stocknr. 535-0344
FabrikantRS PRO
71,16 €
Each
Aantal stuks
1.8° 60mNm 4 3.8 V 28 x 28mm Hybrid, Permanent Magnet 5mm 670 mA - 18mm 32mm - 5.6Ω -
RS-stocknr. 918-0849
FabrikantRS PRO
16,74 €
Each
Aantal stuks
15° 10mNm 4 24 V 42mm Permanent Magnet 2mm - Unipolar 6.5mm 24.5mm - 500Ω -
RS-stocknr. 440-470
FabrikantRS PRO
136,95 €
Each
Aantal stuks
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 -
RS-stocknr. 440-464
FabrikantRS PRO
107,65 €
Each
Aantal stuks
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 -
RS-stocknr. 191-8328
FabrikantRS PRO
34,95 €
Each
Aantal stuks
1.8° 0.26Nm 8 5 V dc 56.4 x 56.4mm Hybrid 6.35mm 1 A - 79.1mm 38.5mm - -
RS-stocknr. 191-8362
FabrikantRS PRO
61,72 €
Each
Aantal stuks
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 -
RS-stocknr. 918-0837
FabrikantRS PRO
27,19 €
Each
Aantal stuks
7.5° 36mNm 2 12 V 59.8mm Permanent Magnet 3mm - Unipolar 7mm 31mm - 251Ω -
RS-stocknr. 191-8356
FabrikantRS PRO
41,37 €
Each
Aantal stuks
1.8° 0.49Nm 8 12 V dc 56.4 x 56.4mm Hybrid 6.35mm 600 mA - 91.1mm 50.5mm - 20Ω -
RS-stocknr. 191-8306
FabrikantRS PRO
32,04 €
Each
Aantal stuks
1.8° 98mNm 6 15 V dc 40 x 40mm Hybrid 5mm 320 mA Unipolar 24mm 33mm 2 37.5Ω -
RS-stocknr. 535-0423
FabrikantRS PRO
87,44 €
Each
Aantal stuks
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
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