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

...
顯示內容 隱藏內容

篩選條件

正在檢視 1 - 20,共 203 項產品
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庫存編號 440-420
BrandRS PRO
HK$220.48
單位
1.8° 70mNm 6 5 V dc 40 x 40mm Hybrid 5mm 500 mA Unipolar 73mm 33mm - 10Ω -
RS庫存編號 535-0401
BrandRS PRO
HK$258.00
單位
0.9° 0.44Nm 4 2.8 V 42.3 x 42.3mm Hybrid 5mm 1.68 A - 24mm 47mm - 1.65Ω -
RS庫存編號 779-3740
製造零件編號FMJ7301CH
HK$135.21
單位
5.625 °, 11.25 ° 40mNm 5 12 V - Bipolar, Unipolar 3mm 32 mA Unipolar 6mm 19mm - - -
RS庫存編號 829-3538
製造零件編號SS2421-5041
HK$346.69
單位
1.8° 83mNm 4 24 V dc 42 x 42mm Hybrid 5mm 1 A Bipolar 7mm 11.6mm - 3.5Ω -
RS庫存編號 535-0445
BrandRS PRO
HK$497.99
單位
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庫存編號 383-1267
製造零件編號53154
HK$120.00
單位
18° 50mNm 6 12 V dc - Bipolar, Unipolar 1.5mm - Unipolar - - 2 - -
RS庫存編號 432-8289
製造零件編號23HS-104 MK2
HK$597.43
單位
1.8° 0.52Nm 8 - 57.2 x 57.2mm Hybrid 6.35mm 2 A Unipolar 19mm - 2 1.1Ω -
RS庫存編號 535-0372
BrandRS PRO
HK$233.39
單位
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庫存編號 829-3547
製造零件編號SS2422-5041
HK$413.86
單位
1.8° 18.6mNm 4 24 V dc 42 x 42mm Hybrid 5mm 1 A Bipolar 7mm 18.6mm - 5.4Ω -
RS庫存編號 368-0277
製造零件編號26M048B-1U
HK$211.09
單位
7.5° 9.0mNm 6 5 V dc - Permanent Magnet 2mm 250 mA Unipolar 9.78mm 13.72mm 2 19.6Ω -
RS庫存編號 351-4580
製造零件編號42M048C-1U
HK$204.30
單位
7.5° 66mNm 6 5 V dc - Permanent Magnet 3mm 550 mA Unipolar 9.88mm 22mm 2 9.1Ω -
RS庫存編號 351-4574
製造零件編號M82201-P2SB
HK$275.59
單位
7.5° 25mNm - 12 V dc - Permanent Magnet 2mm 180 mA Unipolar - - 2 - -
RS庫存編號 829-3525
製造零件編號103H7126-5740
HK$529.24
單位
1.8° 1.6Nm 4 24 V dc 56 x 56mm Hybrid 6.35mm 2 A Bipolar 19.1mm 77.3mm - -
RS庫存編號 351-4619
製造零件編號P542-M481U-G06L82
HK$459.41
單位
7.5° 0.54Nm 6 5 V dc - Permanent Magnet 4mm 550 mA Unipolar 17.2mm 25mm 2 9.1Ω -
RS庫存編號 368-0261
製造零件編號15M020D-1B
HK$182.12
單位
18° 3.9mNm 4 5 V - Permanent Magnet 1.5mm 125 mA Bipolar 8.5mm 15.11mm 2 40Ω -
RS庫存編號 829-3522
製造零件編號4835728-1
HK$23.31
單位
- - 4 - - Bipolar, Unipolar - - Unipolar - - - - -
RS庫存編號 892-8732
BrandRS PRO
HK$214.56
單位
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庫存編號 829-3534
製造零件編號SH2141-5541
HK$758.68
單位
1.8° 6.5mNm 4 24 V dc 14 x 14mm Hybrid 4mm 300 mA Bipolar 13.5mm 31.5mm - 21Ω -
RS庫存編號 535-0467
BrandRS PRO
HK$185.30
單位
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庫存編號 440-442
BrandRS PRO
HK$304.96
單位
1.8° 0.50Nm 8 5.1 V dc 56.4 x 56.4mm Hybrid 6.35mm 1 A Unipolar 91.1mm 50.5mm - -