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NEMA 17 Bipolar 1.8deg 0.21Nm(29.1oz-in) 0.42A 4.4V 42x42x33mm 4 Wires Stepper Motor

NEMA 17 Bipolar 1.8deg 0.21Nm(29.1oz-in) 0.42A 4.4V 42x42x33mm 4 Wires Stepper Motor

Manufacturer Part Number: 42H033H-0504
Frame Size: 42x42mm
Motor Type: Bipolar Stepper
Step Angle: 1.8 deg
Holding Torque: 0.21Nm(29.1oz.in)
Rated Current/phase: 0.42A
Voltage: 4.4V
Phase Resistance: 10.5ohms
Inductance: 18mH ± 20%(1KHz)
Body Length: 33mm

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Product Introduction

Technical Parameter

Item

Specifications

Step Angle Accuracy

±5%

Resistance Accuracy

±10%

Inductance Accuracy

±20%

Temperature Rise

80K Max.

Ambient Temperature

-20℃~+50℃

Insulation Resistance

100MΩMin.@ 500VDC

Dielectric strength

One minute@500VAC∙5mA Max.

Shaft Radial Play

0.06Max.@450g

Shaft Axial Play

0.08Max.@450g

 

Technical Specification

Model No.

Polar

Rated
Voltage

Current/
Phase

Resistance/
Phase

Inductance/
Phase

Holding
Torque

# of
Leads

Rotor
inertia

Weight

Length
   

V

A

Ω

mH

oz-in

kgf · cm

  

g∙ cm2

kg

mm

42H033H-0504

  Bipolar

4.4

0.42

10.5

18

29.1

2.1

4  

35

0.22

33

 

31

 

Pull Out Torque Curve

30

FAQ

Q: What are stepper motors' limits compared with servo motors?

A: Stepper motors and servo motors have different characteristics and performance limits. Here's a comparison of some of their key differences:

1. Torque: Servo motors typically provide higher torque compared to stepper motors. Stepper motors deliver torque in discrete steps, while servo motors can provide continuous torque output. Servo motors have higher torque densities, making them more suitable for applications that require high torque at high speeds.

 

2. Speed: Stepper motors generally have lower maximum speeds compared to servo motors. Stepper motors operate in a step-wise manner, which limits their speed capabilities. On the other hand, servo motors can achieve higher speeds due to their closed-loop control systems and continuous feedback.

 

3. Positioning Accuracy: Stepper motors offer excellent positioning accuracy and repeatability, typically in the range of a fraction of a degree or step. Servo motors, when paired with high-resolution encoders and closed-loop control systems, can achieve even higher levels of accuracy.

 

4. Response Time: Servo motors have faster response times compared to stepper motors. Servo motors can quickly adjust their position and speed in response to changes in the control signal or external disturbances. Stepper motors have a slower response due to their open-loop control system, which may lead to lag in following rapid changes.

 

5. Overload Capability: Servo motors have higher overload capabilities compared to stepper motors. Servo motors can handle brief periods of higher torque demands without losing synchronization or stalling. Stepper motors may experience issues if subjected to sustained overload conditions.

 

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