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

...
Read more Read less

Filters

Viewing 1 - 20 of 189 products
Results per page
Description Price 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 Stock No. 535-0372
BrandRS PRO
MYR209.15
Each
units
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 Stock No. 535-0445
BrandRS PRO
MYR450.32
Each
units
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
RS Stock No. 191-8356
BrandRS PRO
MYR214.14
Each
units
1.8° 0.49Nm 8 12 V dc 56.4 x 56.4mm Hybrid 6.35mm 600 mA - 91.1mm 50.5mm - 20Ω -
RS Stock No. 535-0338
BrandRS PRO
MYR270.61
Each
units
1.8° 17.5mNm 4 3.96 V 20.2 x 20.2mm Hybrid, Permanent Magnet 4mm 600 mA - 5mm 33mm - 6.5Ω -
RS Stock No. 535-0467
BrandRS PRO
MYR143.34
Each
units
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 Stock No. 535-0401
BrandRS PRO
MYR257.21
Each
units
0.9° 0.44Nm 4 2.8 V 42.3 x 42.3mm Hybrid 5mm 1.68 A - 24mm 47mm - 1.65Ω -
RS Stock No. 440-420
BrandRS PRO
MYR120.05
Each
units
1.8° 70mNm 6 5 V dc 40 x 40mm Hybrid 5mm 500 mA Unipolar 73mm 33mm - 10Ω -
RS Stock No. 798-3628
BrandRS PRO
MYR210.18
Each
units
1.8° 0.16Nm 6 4 V dc 42 x 42mm Bipolar, Unipolar 5mm 950 mA Unipolar 68mm 33mm - 4.2Ω -
RS Stock No. 798-3630
BrandRS PRO
MYR317.39
Each
units
1.8° 0.83Nm 6 7.4 V dc 56.4 x 56.4mm Bipolar, Unipolar 6.35mm 1 A Unipolar 91.6mm 55mm - 7.4Ω -
RS Stock No. 535-0366
BrandRS PRO
MYR461.52
Each
units
1.8° 0.12Nm 4 6.2 V 28 x 28mm Hybrid, Permanent Magnet 5mm 670 mA - 18mm 51mm - 9.2Ω -
RS Stock No. 892-8732
BrandRS PRO
MYR152.68
Each
units
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 Stock No. 535-0502
BrandRS PRO
MYR369.77
Each
units
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 Stock No. 798-3643
BrandRS PRO
MYR612.20
Each
units
1.8° 1.76Nm 6 5.1 V dc 56.4 x 56.4mm Bipolar, Unipolar 6.35mm 3 A Unipolar 139.6mm 103mm - 1.7Ω -
RS Stock No. 535-0489
BrandRS PRO
MYR175.03
Each
units
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 Stock No. 918-0849
BrandRS PRO
MYR75.91
Each
units
15° 10mNm 4 24 V 42mm Permanent Magnet 2mm - Unipolar 6.5mm 24.5mm - 500Ω -
RS Stock No. 892-8741
BrandRS PRO
MYR986.67
Each
units
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 -
RS Stock No. 892-8735
BrandRS PRO
MYR370.98
Each
units
1.8° 0.78Nm 8 2.1 V, 3 V, 4.2 V 60 x 60mm Hybrid, Permanent Magnet 7.5mm 2 A Parallel, Series, Unipolar 22.4mm 69mm 1 1.5Ω -
RS Stock No. 191-8306
BrandRS PRO
MYR140.61
Each
units
1.8° 98mNm 6 15 V dc 40 x 40mm Hybrid 5mm 320 mA Unipolar 24mm 33mm 2 37.5Ω -
RS Stock No. 191-8340
BrandRS PRO
MYR174.90
Each
units
1.8° 0.49Nm 8 12 V dc 56.4 x 56.4mm Hybrid 6.35mm 480 mA - 91.1mm 50.5mm - 25Ω -
RS Stock No. 798-3646
BrandRS PRO
MYR618.63
Each
units
1.8° 1.96Nm 6 4.4 V dc 85.8 x 85.8mm Bipolar, Unipolar 14mm 2 A Unipolar 137mm 66mm - 2.2Ω -
Related Products
RS Pro stepper motors with 6 or 8 ...
Description:
RS Pro stepper motors with 6 or 8 lead configuration. High quality High reliability Innovative Advanced technology Low noise and low vibration Proper torque Smooth run.
The high performance 23HSX series hybrid stepper motors ...
Description:
The high performance 23HSX series hybrid stepper motors conform to the International NEMA standard. HSX Serie Stepper Motors with WireHigh energy Neodymium magnets used50% more torque than conventional hybrid types8 wire format provides a choice of either Uni-polar or Bi-polar ...
These motors provide a higher level of torque ...
Description:
These motors provide a higher level of torque compared with many similar motors, up to 100% moreThey may be used in either unipolar or bipolar modesIndustry standard footprint and configuration enables these motors to replace existing ones2 operating voltages available. ...
High Torque Hybrid Stepper Motors are motion systems ...
Description:
High Torque Hybrid Stepper Motors are motion systems allowing to have a high positioning precision.With their high power already at low speed, their stall torque and the possibility to divide the steps in micro steps, stepper motors can provide direct ...