Various gear ratio 20BY45-20G 20mm 18° step angle stepper motor
with gearbox
Description:
This is a 20mm stepper motor attached with a gearbox.
The step angle of single 20mm motor is 18°/step.
With a gearbox, motor’s step angle is much smaller, and motors
torque is boosted a lot. (depends on gear ratio)
Customer’s are free to choose different gear ratio based on their
own requirement.
Also, other parameters, such as motor’s resistance/cable
length/connector type are all customizable.
Motor Parameters:
| Model No. | 20BY45-20G |
| Phase No. | 2 phases (bipolar) |
| Rated voltage | 5~8 V DC |
| Resistance | 10Ω/phase (adjustable) |
| Step angle | 18°/gear ratio |
| Output shaft | 4mm diameter D3.5 shaft |
Gearbox Parameters:
| Gearbox levels | Gearbox length L1 (mm) | Gear ratio |
| 3/4 levels | 16 | 10:1/12.5:1/25:1/31.25:1 |
| 5 levels | 17.5 | 50:1/62.5:1/78.1 |
| 6 levels | 19 | 100:1/125:1/156.25:1/195.3:1 |
| 7 levels | 20.5 | 250:1/312.5:1/390.6:1/488:1 |
Design drawing:
Product display:
Application of stepper motors:
Stepper motors are used for precise control, widely used on medical
equipment, 3D printer, industrial precise control, automation
equipment, etc.
Stepper motors can be used in any mechanisms requirement precise
conrtol and rotational/linear movement.
Advantage of stepper motors:
Stepper motor can reach precise control even without close-loop
encoders / without feed back system, also they do not have
electrical brushed. Thus there is no electromagnetic interference
and electrical sparks issues. In some cases, they can replace DC
brushed motors/ brushless motors.
Stepper motors are easy to control with drivers, and this feature
establish its important position in the field of precise control.
1. Precise control achievable, programmable
2. Without electromagnetic interference & electrical sparks
3. Small size
4. Reasonable price
5. Low noise
6. Long service life
Stepper motors are widely used among all industries.
