Nema 8 (20mm) hybrid stepper motor, bipolar, 4-lead, ACME lead
screw, low noise, long life, high performance
This 20mm hybrid stepper motor is available in three types:
externally driven, through-axis, and through-fixed-axis. You can
choose according to your specific needs.
VSM20HSM standard external motor outline drawing:
Descriptions:
Product Name | 20mm Externally driven hybrid stepper motors |
Model | VSM20HSM |
Type | hybrid stepper motors |
Step Angle | 1.8° |
Voltage (V) | 2.5 / 6.3 |
Current (A) | 0.5 |
Resistance (Ohms) | 5.1 / 12.5 |
Inductance (mH) | 1.5 / 4.5 |
| Lead Wires | 4 |
Holding Torque (N.m) | 0.02 / 0.04 |
Motor Length (mm) | 30 / 42 |
| Ambient Temperature | -20℃ ~ +50℃ |
| Temperature Rise | 80K Max. |
| Dielectric Strength | 1mA Max. @ 500V, 1KHz, 1Sec. |
| Insulation Resistance | 100MΩ Min. @500Vdc |
Certifications:
Electrical Parameters:
| Motor Size | Voltage/ Phase (V) | Current/ Phase (A) | Resistance/ Phase (Ω) | Inductance/ Phase (mH) | Number of Lead Wires | Rotor Inertia (g.cm2) | Holding Torque (N.m) | Motor Length L (mm) |
| 20 | 2.5 | 0.5 | 5.1 | 1.5 | 4 | 2 | 0.02 | 30 |
| 20 | 6.3 | 0.5 | 12.5 | 4.5 | 4 | 3 | 0.04 | 42 |
General technical parameters:
| Radial clearance | 0.02mm Max (450g load) | Insulation resistance | 100MΩ @500VDC |
| Axial clearance | 0.08mm Max (450g load) | Dielectric strength | 500VAC, 1mA, 1s@1KHZ |
| Max radial load | 15N (20mm from flange surface) | Insulation class | Class B (80K) |
| Max axial load | 5N | Ambient temperature | -20℃ ~ +50℃ |
Screw specifications:
| Lead screw diameter(mm) | Lead(mm) | Step(mm) | Power off self-locking force(N) |
| 3.5 | 0.6096 | 0.003048 | 80 |
| 3.5 | 1 | 0.005 | 40 |
| 3.5 | 2 | 0.01 | 10 |
| 3.5 | 4 | 0.02 | 1 |
| 3.5 | 8 | 0.04 | 0 |
Torque-frequency curve:
Test condition:
Chopper drive, half micro-stepping, drive voltage 24V
Areas of application:
3D Printing: 20mm hybrid stepper motors can be used for motion control in 3D
printers to drive the print head, stage and axial motion system.
Automation equipment: These stepper motors are commonly used in
automation equipment, such as automatic packaging machines,
automatic assembly lines, automatic handling robotic arms, etc.,
for controlling precise position and speed.
Robotics: In the field of robotics, 20 mm hybrid stepper motors are used to
control the joint movements of robots for accurate attitude and
position control.
CNC machine tools: These stepper motors are also used in CNC machine tools to drive
precise movements of tools or tables for high precision machining.
Medical equipment: In medical equipment, 20mm hybrid stepper motors can be used to
accurately control the movement of components in medical equipment,
such as surgical robots and drug delivery systems.
Automotive equipment: In the automotive industry, these stepper motors can be used to
control the position and movement of automotive components, such as
window lifting and lowering systems, seat adjustment systems, and
so on.
Smart Home: In the smart home field, 20mm hybrid stepper motors can be used to
control the opening and closing of curtains, rotating cameras in
home security systems, etc.
These are just some of the common application areas of 20mm hybrid
stepper motors, in fact, stepper motors have a wide range of
applications in various industries and fields. Specific use
scenarios also depend on their particular specifications,
performance and control requirements.
Advantage:
Accuracy and Positioning Capability: Hybrid stepper motors offer high accuracy and positioning
capability for fine stepping motions, often with low stepping
angles such as 1.8 degrees or 0.9 degrees, resulting in more
precise position control.
High torque and high speed: Hybrid stepper motors are structurally designed to provide high
torque output and, with the right driver and controller, high
speed. This makes them suitable for applications that require both
high torque and high speed motion.
Controllability and Programmability: Hybrid stepper motors are an open-loop control system with good
controllability. They can be precisely controlled at each step of
motion by the controller, resulting in highly programmable and
controllable motion sequences.
Simple Drive and Control: Hybrid stepper motors have relatively simple drive and control
circuitry compared to other types of motors. They do not require
the use of position feedback devices (e.g. encoders) and can be
directly controlled by appropriate drivers and controllers. This
simplifies system design and installation and reduces costs.
High reliability and stability: Hybrid stepper motors offer high reliability and stability due to
their simple construction, small number of moving parts and
brushless design. They do not require regular maintenance, have a
long service life, and provide stable performance with proper use
and operation.
Energy efficient and low noise: Hybrid stepper motors are energy efficient, providing high output
torque at relatively low power. In addition, they typically operate
to produce lower noise levels, giving them an advantage in
noise-sensitive applications.
Motor Selection Requirements:
►Movement/mounting direction
►Load Requirements
►Stroke Requirements
►End machining requirements
►Precision Requirements
►Encoder Feedback Requirements
►Manual Adjustment Requirements
►Environmental Requirements
Production workshop:
