

Add to Cart
High Torque 42mm 1.8 Degree 0.9 Stepper Motor Nema 17 With High
Efficiency Planetary Gearbox
Description:
This 42mm square shape hybrid stepper motor with planetary gearbox.
We have different gear ratio combinations for you to choose.
The output shaft is a round shaft with a slot.
Motor’s output torque is related to motor’s length and gear box
ratio.
We have different gearbox ratios and motor length for choose.
Gearbox information:
Level No. | Efficiency | Gearbox length(mm) | Gearbox ratio |
1 | 95% | 40 | 3:1/4:1/5:1/7:1/10:1 |
2 | 90% | 51 | 12:1/15:1/16:1/20:1/25:1/ 28:1/35:1/40:1/50:1/70:1 |
3 | 85% | 62 | 64:1/80:1/100:1/125:1/ 140:1/175:1/200:1 |
Motor parameters:
Model No. | 42HS40-PLE |
Possible Motor length(L1) | 25 / 28 / 34 / 40 / 48 / 52 / 60 |
Current range | 0.4~1.7A/phase |
Output type | Round shaft with slot |
Step angle (single motor) | 0.9°/ 1.8° |
Output torque | Motor torque*gear ratio* efficiency |
Design drawing:
Product display:
Application of stepper motors:
3D Printing - Hybrid stepper motors are widely used in 3D printers
to provide the precise motion control needed for layer-by-layer
material extrusion. Their ability to hold position during printing
while providing adequate torque enables accurate 3D object
production.
Industrial control - In industrial automation and CNC machines,
42mm hybrid steppers are used for precise positioning and motion
control. They power spindle motors in CNC machines, move axes in
automated lathes and drive parts through assembly lines.
Computer peripherals - Hybrid steppers move drive belts in computer
printers, scanners and copiers. They provide the precision needed
for high quality document scanning and printing. They are also used
in optical drives for reading and writing CDs/DVDs.
Packaging machinery - 42mm hybrid steppers are found in
form-fill-seal machines, labelling applicators, palletisers and
other packaging equipment. They enable accuracy and repeatability
in material handling, product orientation and high-speed labelling.
Textile machinery - In textile manufacturing systems, hybrid
steppers are used for warp let-off and take-up functions in looms.
They precisely control tensions on warp threads to ensure
consistent fabric production.
Mechatronics - Hybrid stepper motors aid in the motion control of
various mechatronic devices including robots, precision XY stages
and automated guided vehicles. Their digital inputs simplify
control integration.
In summary, 42mm hybrid steppers provide an ideal balance of
precise control capabilities with sufficient torque for medium load
applications. Their wide performance range, combined with
advantages like digital control, longevity and low cost, make them
well suited for automation systems requiring accuracy and
repeatability in motion.
Notes about hybrid stepper motors:
Customers should follow the principle of “selecting stepper motors
first, then select driver based on existing stepper motor”
It is best not to use the full-step driving mode to drive a hybrid
stepping motor, and the vibration is bigger under full-step
driving.
Hybrid stepper motor is more suitable for low-speed occasions. We
suggest the speed does not exceed 1000 rpm (6666PPS at 0.9
degrees), preferably between 1000-3000PPS (0.9 degrees), and it can
be attached with a gearbox to lower it’s speed. The motor has high
working efficiency and low noise at suitable frequency.
Due to historical reasons, only the motor with a nominal 12V
voltage uses 12V. Other rated voltage on design drawing is not
exactly the most suitable driving voltage for the motor. Customers
should choose suitable driving voltage and suitable driver based on
own requirement.
When the motor is used with high speed or large load, it generally
does not start at the working speed directly. We suggest to
gradually increases the frequency and speed. For two reasons:
First, the motor does not lose steps, and second, it can reduce
noise and improve the positioning accuracy.
The motor should not work in the vibration area(below 600 PPS ). If
it must be used at slow speed, vibration problem could be reduced
by changing the voltage, current or adding some damping.
When the motor works below 600PPS (0.9 degrees), it should be
driven by small current, large inductance and low voltage.
For loads with a large moment of inertia, a large size motor should
be selected.
When higher precision is required, it could be solved by adding
gearbox, increasing the motor speed, or using subdivision driving.
Also a 5-phase motor(unipolar motor) could be used, but the price
of the entire system is relatively expensive, so it’s rarely used.
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