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. 181-6688
FabrikantnummerEMMS-ST-57-M-SB-G2
FabrikantFesto
413,34 €
Each
Aantal stuks
1.8° - - 48 V dc - Hybrid 6.35mm 5 A - 20.6mm 145mm - 0.25Ω -
RS-stocknr. 181-6698
FabrikantnummerEMMS-ST-87-L-S-G2
FabrikantFesto
255,16 €
Each
Aantal stuks
1.8° - - 48 V dc - Hybrid 11mm 9.5 A - 27mm 144.9mm - 0.23Ω -
RS-stocknr. 181-6683
FabrikantnummerEMMS-ST-57-S-SE-G2
FabrikantFesto
258,98 €
Each
Aantal stuks
1.8° - - 48 V dc - Hybrid 6.35mm 5 A - 20.6 102.5mm - 0.15Ω -
RS-stocknr. 181-6705
FabrikantnummerEMMS-ST-28-L-S
FabrikantFesto
184,22 €
Each
Aantal stuks
1.8° - - 48 V dc - Hybrid 5mm 1.4 A - 20 70mm - 2.3Ω -
RS-stocknr. 181-6701
FabrikantnummerEMMS-ST-87-L-SEB-G2
FabrikantFesto
669,78 €
Each
Aantal stuks
1.8° - - 48 V dc - Hybrid 11mm 9.5 A - 27mm 214.9mm - 0.23Ω -
RS-stocknr. 181-6704
FabrikantnummerEMMS-ST-28-L-SB
FabrikantFesto
624,18 €
Each
Aantal stuks
1.8° - - 48 V dc - Hybrid 5mm 1.4 A - 20mm 96mm - 2.3Ω -
RS-stocknr. 181-6699
FabrikantnummerEMMS-ST-87-L-SE-G2
FabrikantFesto
408,24 €
Each
Aantal stuks
1.8° - - 48 V dc - Hybrid 11mm 9.5 A - 27mm 174.9mm - 0.23Ω -
RS-stocknr. 181-6690
FabrikantnummerEMMS-ST-87-S-S-G2
FabrikantFesto
223,26 €
Each
Aantal stuks
1.8° - - 48 V dc - Hybrid 11mm 9.5 A - 27 82.6mm - 0.1Ω -
RS-stocknr. 181-6700
FabrikantnummerEMMS-ST-87-L-SB-G2
FabrikantFesto
516,68 €
Each
Aantal stuks
1.8° - - 48 V dc - Hybrid 11mm 9.5 A - 27mm 194.9mm - 0.23Ω -
RS-stocknr. 181-6685
FabrikantnummerEMMS-ST-57-S-SEB-G2
FabrikantFesto
520,50 €
Each
Aantal stuks
1.8° - - 48 V dc - Hybrid 6.35mm 5 A - 20.6mm 138mm - 0.15Ω -
RS-stocknr. 181-6689
FabrikantnummerEMMS-ST-57-M-SEB-G2
FabrikantFesto
538,36 €
Each
Aantal stuks
1.8° - - 48 V dc - Hybrid 6.35mm 5 A - 20.6mm 159.5mm - 0.25Ω -
RS-stocknr. 181-6702
FabrikantnummerEMMS-ST-28-L-SE
FabrikantFesto
315,12 €
Each
Aantal stuks
1.8° - - 48 V dc - Hybrid 5mm 1.4 A - 20mm 70mm - 2.3Ω -
RS-stocknr. 181-6680
FabrikantnummerEMMS-ST-42-S-SB-G2
FabrikantFesto
386,56 €
Each
Aantal stuks
1.8° - - 48 V dc - Hybrid 5mm 1.8 A - 24mm 114mm - 1.75Ω -
RS-stocknr. 181-6694
FabrikantnummerEMMS-ST-87-M-S-G2
FabrikantFesto
236,03 €
Each
Aantal stuks
1.8° - - 48 V dc - Hybrid 11mm 9.5 A - 27 114.9mm - 0.23Ω -
RS-stocknr. 181-6687
FabrikantnummerEMMS-ST-57-M-SE-G2
FabrikantFesto
276,83 €
Each
Aantal stuks
1.8° - - 48 V dc - Hybrid 6.35mm 5 A - 20.6mm 124mm - 0.25Ω -
RS-stocknr. 181-6697
FabrikantnummerEMMS-ST-87-M-SEB-G2
FabrikantFesto
650,63 €
Each
Aantal stuks
1.8° - - 48 V dc - Hybrid 11mm 9.5 A - 27mm 184.9mm - 0.23Ω -
RS-stocknr. 181-6682
FabrikantnummerEMMS-ST-57-S-S-G2
FabrikantFesto
133,97 €
Each
Aantal stuks
1.8° - - 48 V dc - Hybrid 6.35mm 5 A - 20.6 73.5mm - 0.15Ω -
RS-stocknr. 181-6684
FabrikantnummerEMMS-ST-57-S-SB-G2
FabrikantFesto
395,47 €
Each
Aantal stuks
1.8° - - 48 V dc - Hybrid 6.35mm 5 A - 20.6mm 123.5mm - 0.15Ω -
RS-stocknr. 181-6703
FabrikantnummerEMMS-ST-28-L-SEB
FabrikantFesto
741,74 €
Each
Aantal stuks
1.8° - - 48 V dc - Hybrid 5mm 1.4 A - 20mm 96mm - 2.3Ω -
RS-stocknr. 181-6693
FabrikantnummerEMMS-ST-87-S-SEB-G2
FabrikantFesto
637,87 €
Each
Aantal stuks
1.8° - - 48 V dc - Hybrid 11mm 9.5 A - 27mm 125.6mm - 0.1Ω -