Tag Archives: stepper motor nema17

China high quality NEMA17 High Torque Gear Stepper Motors with Planetary Gearbox for Robot motor armature

Product Description

 

Product Description

Planetary Gear Stepping Motor :
Precision high-end upgrade with Nema8, Nema 11, Nema14, Nema 17, Nema23, Nema 24 
stepper motor; low noise, low vibration, firm and durable. Increase torque at low speed.
Reduction ratio:1:3.7 , 1:5.2 , 1:14 , 1:19 ,1:27 ,1:51 , 1:71 ,1:100 ,1:139 , 1:189 ,1:264 , 1:369 ,And 48 hours delivery , in stock .

Application:
Automation control, medical equipment, textile machinery,and packaging machinery fields. Not only in the field of the automation industry, it also has a good use status in the home.   Products with low speed and inertia are often seen: electric curtains, electric shutters, etc
 

Product Parameters

Planetary Gear Box Specification:

Housing Material Metal
Bearing at Output Ball Bearings
Max.Radial Load(10mm from flange) 200N
Max.Shaft Axial Load 100N
Radial Play of Shaft (near to Flange) ≤0.06mm
Axial Play of Shaft ≤0.3mm
Backlash at No-load 1 stage≤1°,2stage≤1.2°,3stage≤1.5°

42HS Hybrid Stepping Motor Specifications:
 

Model No. Step Angle Motor Length(L1) Rated Current Resistance Inductance Holding Torque # of Leads Rotor Inertia Mass Max.Gear Ratio
Voltage /Phase /Phase /Phase
Single Shaft ( °) (L)mm V A Ω mH mN.m No. g.cm2 Kg  
42HSC1409 1.8 34 2.93 1.33 2.2 3.5 270 4 30 0.22 ≤1:369
42HSC4409 1.8 40 2.5 1.5 1.65 3.3 380 4 40 0.3 ≤1:369

42HSC1409 Planetary Gearbox Specifications:
Reduction ratio 3.71 5.18 14 19 27 51 71 100 139 189 264 369
Total Height(L1+L2) (mm) 65.5 65.5 76.1 76.1 76.1 86.5 86.5 86.5 86.5 96.9 96.9 96.9
Output torque ( mN.m) 902 1259 3062 4155 5000 10000 10000 10000 10000 10000 10000 10000
Total Weight(g) 428 428 510 510 510 592 592 592 592 674 674 674
Number of gear trains 1 2 3 4
Reducer Length(L2)   (mm) 31.5 42.1 52.5 62.9
Efficiency 90% 81% 73% 66%

 

42HSC4409 Planetary Gearbox Specifications:
Reduction ratio 3.71 5.18 14 19 27 51 71 100 139 189 264 369
Total Height(L1+L2) (mm) 71.5 71.5 82.1 82.1 82.1 92.5 92.5 92.5 92.5 102.9 102.9 102.9
Output torque ( mN.m) 1269 1772 4309 5000 5000 10000 10000 10000 10000 10000 10000 10000
Total Weight(g) 508 508 590 590 590 672 672 672 672 754 754 754
Number of gear trains 1 2 3 4
Reducer Length(L2)   (mm) 31.5 42.1 52.5 62.9
Efficiency 90% 81% 73% 66%

 

Detailed Photos

 

 

Company Profile

ZheJiang UMot Technology Co., Ltd. specializes in R&D and sales of stepper motors, servo motors, linear modules and related motion control products, customizing and designing high-quality motor products for users with special needs around the world, and providing overall solutions for motion control systems. Products are exported to more than 30 countries and regions including the United States, Germany, France, Italy, Russia, and Switzerland. The company’s main products and system design have been widely used in automation control, precision instruments, medical equipment, smart home, 3D printing and many other fields.
Our company has been recognized as a high-tech enterprise by relevant departments, has a complete quality management system, has obtained ISO9001, CE, RoHs and other related certifications, and holds a number of electrical patent certificates. “Concentration, Professionalism, Concentration” in the field of automation of motor R&D and system control solutions is the company’s business purpose. “Be your most trusted partner” is the company’s service philosophy. We have always been aiming to “make first-class products with professional technology”, keep pace with the times, innovate constantly, and provide more users with better products and services.

FAQ

1. Shipping method:
1)International Express delivery DHL&FEDEX &UPS&TNT& 7-10days
2)Shipping by air 7-10 days
3)shipping by sea, delivery time depends on the destination port.

2. Technical Support:
We can provide you with professional technical support. And our products quality guarantee is 6 months. Also, we accept products customized.

3. Why should you buy from us, not from other suppliers?
Professional one-to-1 motor customized. The world’s large enterprise of choice for high-quality suppliers. ISO9001:2008 quality management system certification, through the CE, ROHS certification.

4. How to select models?
Before purchasing, please contact us to confirm model No. and specifications to avoid any misunderstanding.

5. Are you a factory?
Yes, we are a factory, and we produce stepper motor/driver, Servo motor/driver.

 

Application: Robot
Speed: Low Speed
Number of Stator: Two-Phase
Excitation Mode: HB-Hybrid
Function: Control, Driving
Number of Poles: 2
Samples:
US$ 42/Piece
1 Piece(Min.Order)

|
Request Sample

Customization:
Available

|

Customized Request

Motor

The Basics of a Gear Motor

The basic mechanism behind the gear motor is the principle of conservation of angular momentum. The smaller the gear, the more RPM it covers and the larger the gear, the more torque it produces. The ratio of angular velocity of two gears is called the gear ratio. Moreover, the same principle applies to multiple gears. This means that the direction of rotation of each adjacent gear is always the opposite of the one it is attached to.

Induction worm gear motor

If you’re looking for an electric motor that can deliver high torque, an Induction worm gear motor might be the right choice. This type of motor utilizes a worm gear attached to the motor to rotate a main gear. Because this type of motor is more efficient than other types of motors, it can be used in applications requiring massive reduction ratios, as it is able to provide more torque at a lower speed.
The worm gear motor is designed with a spiral shaft that is set into splines in another gear. The speed at which the worm gear rotates is dependent on the torque produced by the main gear. Induction worm gear motors are best suited for use in low-voltage applications such as electric cars, renewable energy systems, and industrial equipment. They come with a wide range of power-supply options, including twelve-volt, 24-volt, and 36-volt AC power supplies.
These types of motors can be used in many industrial settings, including elevators, airport equipment, food packaging facilities, and more. They also produce less noise than other types of motors, which makes them a popular choice for manufacturers with limited space. The efficiency of worm gearmotors makes them an excellent choice for applications where noise is an issue. Induction worm gear motors can be compact and extremely high-torque.
While the Induction worm gear motor is most widely used in industrial applications, there are other kinds of gearmotors available. Some types are more efficient than others, and some are more expensive than others. For your application, choosing the correct motor and gearbox combination is crucial to achieving the desired result. You’ll find that the Induction worm gear motor is an excellent choice for many applications. The benefits of an Induction worm gear motor can’t be overstated.
The DC gear motor is an excellent choice for high-end industrial applications. This type of gearmotor is smaller and lighter than a standard AC motor and can deliver up to 200 watts of torque. A gear ratio of three to two can be found in these motors, which makes them ideal for a wide range of applications. A high-quality DC gear motor is a great choice for many industrial applications, as they can be highly efficient and provide a high level of reliability.
Electric gear motors are a versatile and widely used type of electric motor. Nevertheless, there are some applications that don’t benefit from them, such as applications with high shaft speed and low torque. Applications such as fan motors, pump and scanning machines are examples of such high-speed and high-torque demands. The most important consideration when choosing a gearmotor is its efficiency. Choosing the right size will ensure the motor runs efficiently at peak efficiency and will last for years.
Motor

Parallel shaft helical gear motor

The FC series parallel shaft helical gearmotor is a compact, lightweight, and high-performance unit that utilizes a parallel shaft structure. Its compact design is complemented by high transmission efficiency and high carrying capacity. The motor’s material is 20CrMnTi alloy steel. The unit comes with either a flanged input or bolt-on feet for installation. Its low noise and compact design make it an ideal choice for a variety of applications.
The helical gears are usually arranged in two rows of one another. Each row contains one or more rows of teeth. The parallel row has the teeth in a helical pattern, while the helical rows are lined up parallelly. In addition to this, the cross helical gears have a point contact design and do not overlap. They can be either parallel or crossed. The helical gear motors can have any number of helical pairs, each with a different pitch circle diameter.
The benefits of the Parallel Shaft Helical Gearbox include high temperature and pressure handling. It is produced by skilled professionals using cutting-edge technology, and is widely recognized for its high performance. It is available in a range of technical specifications and is custom-made to suit individual requirements. These gearboxes are durable and low-noise and feature high reliability. You can expect to save up to 40% of your energy by using them.
The parallel shaft helical gear motors are designed to reduce the speed of a rotating part. The nodular cast iron housing helps make the unit robust in difficult environments, while the precision-machined gears provide quiet, vibration-free operation. These motors are available in double reduction, triple reduction, and quadruple reduction. The capacity ranges from 0.12 kW to 45 kW. You can choose from a wide variety of capacities, depending on the size of your gearing needs.
The SEW-EURODRIVE parallel shaft helical gearmotor is a convenient solution for space-constrained applications. The machine’s modular design allows for easy mounting and a wide range of ambient temperatures. They are ideal for a variety of mechanical applications, including conveyors, augers, and more. If you want a small footprint, the SEW-EURODRIVE parallel shaft helical gear motor is the best solution for you.
The parallel shaft helical gears are advantageous for both high and low speed applications. Parallel helical gears are also suitable for low speed and low duty applications. A good example of a cross-helix gear is the oil pump of an internal combustion engine. Both types of helical gears are highly reliable and offer vibration-free operation. They are more costly than conventional gear motors, but offer more durability and efficiency.
Motor

Helical gear unit

This helical gear unit is designed to operate under a variety of demanding conditions and can be used in a wide range of applications. Designed for long life and high torque density, this gear unit is available in a variety of torques and gear ratios. Its design and construction make it compatible with a wide range of critical mechanical systems. Common applications include conveyors, material handling, steel mills, and paper mills.
Designed for high-performance applications, the Heidrive helical gear unit provides superior performance and value. Its innovative design allows it to function well under a wide range of operating conditions and is highly resistant to damage. These gear motors can be easily combined with a helical gear unit. Their combined power output is 100 Nm, and they have a high efficiency of up to 90%. For more information about the helical gear motor, contact a Heidrive representative.
A helical gear unit can be classified by its reference section in the standard plane or the turning plane. Its center gap is the same as that of a spur gear, and its number of teeth is the same. In addition to this, the helical gear has a low axial thrust, which is another important characteristic. The helical gear unit is more efficient at transferring torque than a spur gear, and it is quieter, too.
These units are designed to handle large loads. Whether you are using them for conveyors, augers, or for any other application that involves high-speed motion, a helical gear unit will deliver maximum performance. A helical gear unit from Flender can handle 400,000 tasks with a high degree of reliability. Its high efficiency and high resistance to load ensures high plant availability. These gear motors are available in a variety of sizes, from single-speed to multi-speed.
PEC geared motors benefit from decades of design experience and high quality materials. They are robust, quiet, and offer excellent performance. They are available in multiple configurations and are dimensionally interchangeable with other major brands. The gear motors are manufactured as modular kits to minimize inventory. They can be fitted with additional components, such as backstops and fans. This makes it easy to customize your gear motors and save money while reducing costs.
Another type of helical gears is the double helical gear. The double helical gear unit has two helical faces with a gap between them. They are better for enclosed gear systems as they provide greater tooth overlap and smoother performance. Compared to double helical gears, they are smaller and more flexible than the Herringbone type. So, if you’re looking for a gear motor, a helical gear unit may be perfect for you.

China high quality NEMA17 High Torque Gear Stepper Motors with Planetary Gearbox for Robot   motor armatureChina high quality NEMA17 High Torque Gear Stepper Motors with Planetary Gearbox for Robot   motor armature
editor by CX 2023-05-05

China NEMA17 (42mm) Planetary DC Gear Stepper Motor with Planetary Gearbox Reduction Ratio 5.18: 1 dc motor

Solution Description

nema17 Planetary Gearbox Stepping Motor price on very hot sale
General Specificati

Housing Material Steel
Bearing at Output Ball Bearings
Max.Radial Load(12mm from flange)  ≤80N
Max.Shaft Axial Load ≤30N
Radial Enjoy of Shaft (close to to Flange) ≤0.06mm
Axial Enjoy of Shaft  ≤0.3mm
Backlash at No-load  1.5°

Electrical Specification:  

Design No. Action Angle Motor Size Present
/Phase
Resistance
/Period
Inductance
/Section
Keeping Torque # of Leads Detent Torque Rotor Inertia Mass
  ( °) (L)mm A Ω mH kg.cm No. g.cm g.cm Kg
JK42HS34-1334 1.8 34 1.33 2.one two.five 2.2 four a hundred and twenty 34 .22
JK42HS34-0406 1.eight 34 .4 24 15 1.6 6 one hundred twenty 34 .22
JK42HS40-1684 1.eight 40 one.sixty eight 1.65 3.2 3.6 four one hundred fifty 54 .28
JK42HS40-1206 1.eight forty 1.2 3 2.seven two.9 six one hundred fifty fifty four .28
JK42HS48-1684 one.8 forty eight one.68 one.sixty five 2.8 four.four four 260 68 .35
JK42HS48-1206 one.8 forty eight 1.2 three.3 two.8 3.17 6 260 68 .35
JK42HS60-1704 one.eight sixty one.seven three 6.two 7.three four 280 102 .five
JK42HS60-1206 1.8 60 one.two 6 seven 5.6 six 280 102 .5

42HS Planetary Gearbox Requirements

Reduction ratio three.71 5.18 13.seventy six 19.2 26.8 fifty one 71 ninety nine.5 139
Quantity of equipment trains 1 2 3
Length(L2)   mm 27.3 35 42.seven
Max.rated torque kg.cm 20 30 40
Brief time permissible torque kg.cm 40 60 80
Weight   g 350 450 550

Products of special request can be created in accordance to the client request !

firm information:

our certification:

Our Firm provides 3 major collection of items:Hybrid Stepper motors, Brushless Dc motor and Dc Brush motor.
We are usually proceeds develop new kind models.If you need other kinds of elements, remember to never be reluctant to speak to us.

Amy Gao

 

 

 

 

 

US $15-21.5
/ Piece
|
3 Pieces

(Min. Order)

###

Application: Universal, Industrial, Household Appliances, Car, Power Tools
Operating Speed: Adjust Speed
Excitation Mode: Compound
Function: Run
Casing Protection: Protection Type
Number of Poles: 8

###

Samples:
US$ 21.5/Piece
1 Piece(Min.Order)

|
Request Sample

###

Customization:

###

Housing Material Metal
Bearing at Output Ball Bearings
Max.Radial Load(12mm from flange)  ≤80N
Max.Shaft Axial Load ≤30N
Radial Play of Shaft (near to Flange) ≤0.06mm
Axial Play of Shaft  ≤0.3mm
Backlash at No-load  1.5°

###

Model No. Step Angle Motor Length Current
/Phase
Resistance
/Phase
Inductance
/Phase
Holding Torque # of Leads Detent Torque Rotor Inertia Mass
  ( °) (L)mm A Ω mH kg.cm No. g.cm g.cm Kg
JK42HS34-1334 1.8 34 1.33 2.1 2.5 2.2 4 120 34 0.22
JK42HS34-0406 1.8 34 0.4 24 15 1.6 6 120 34 0.22
JK42HS40-1684 1.8 40 1.68 1.65 3.2 3.6 4 150 54 0.28
JK42HS40-1206 1.8 40 1.2 3 2.7 2.9 6 150 54 0.28
JK42HS48-1684 1.8 48 1.68 1.65 2.8 4.4 4 260 68 0.35
JK42HS48-1206 1.8 48 1.2 3.3 2.8 3.17 6 260 68 0.35
JK42HS60-1704 1.8 60 1.7 3 6.2 7.3 4 280 102 0.5
JK42HS60-1206 1.8 60 1.2 6 7 5.6 6 280 102 0.5

###

Reduction ratio 3.71 5.18 13.76 19.2 26.8 51 71 99.5 139
Number of gear trains 1 2 3
Length(L2)   mm 27.3 35 42.7
Max.rated torque kg.cm 20 30 40
Short time permissible torque kg.cm 40 60 80
Weight   g 350 450 550
US $15-21.5
/ Piece
|
3 Pieces

(Min. Order)

###

Application: Universal, Industrial, Household Appliances, Car, Power Tools
Operating Speed: Adjust Speed
Excitation Mode: Compound
Function: Run
Casing Protection: Protection Type
Number of Poles: 8

###

Samples:
US$ 21.5/Piece
1 Piece(Min.Order)

|
Request Sample

###

Customization:

###

Housing Material Metal
Bearing at Output Ball Bearings
Max.Radial Load(12mm from flange)  ≤80N
Max.Shaft Axial Load ≤30N
Radial Play of Shaft (near to Flange) ≤0.06mm
Axial Play of Shaft  ≤0.3mm
Backlash at No-load  1.5°

###

Model No. Step Angle Motor Length Current
/Phase
Resistance
/Phase
Inductance
/Phase
Holding Torque # of Leads Detent Torque Rotor Inertia Mass
  ( °) (L)mm A Ω mH kg.cm No. g.cm g.cm Kg
JK42HS34-1334 1.8 34 1.33 2.1 2.5 2.2 4 120 34 0.22
JK42HS34-0406 1.8 34 0.4 24 15 1.6 6 120 34 0.22
JK42HS40-1684 1.8 40 1.68 1.65 3.2 3.6 4 150 54 0.28
JK42HS40-1206 1.8 40 1.2 3 2.7 2.9 6 150 54 0.28
JK42HS48-1684 1.8 48 1.68 1.65 2.8 4.4 4 260 68 0.35
JK42HS48-1206 1.8 48 1.2 3.3 2.8 3.17 6 260 68 0.35
JK42HS60-1704 1.8 60 1.7 3 6.2 7.3 4 280 102 0.5
JK42HS60-1206 1.8 60 1.2 6 7 5.6 6 280 102 0.5

###

Reduction ratio 3.71 5.18 13.76 19.2 26.8 51 71 99.5 139
Number of gear trains 1 2 3
Length(L2)   mm 27.3 35 42.7
Max.rated torque kg.cm 20 30 40
Short time permissible torque kg.cm 40 60 80
Weight   g 350 450 550

The Basics of a Gear Motor

The basic mechanism behind the gear motor is the principle of conservation of angular momentum. The smaller the gear, the more RPM it covers and the larger the gear, the more torque it produces. The ratio of angular velocity of two gears is called the gear ratio. Moreover, the same principle applies to multiple gears. This means that the direction of rotation of each adjacent gear is always the opposite of the one it is attached to.
Motor

Induction worm gear motor

If you’re looking for an electric motor that can deliver high torque, an Induction worm gear motor might be the right choice. This type of motor utilizes a worm gear attached to the motor to rotate a main gear. Because this type of motor is more efficient than other types of motors, it can be used in applications requiring massive reduction ratios, as it is able to provide more torque at a lower speed.
The worm gear motor is designed with a spiral shaft that is set into splines in another gear. The speed at which the worm gear rotates is dependent on the torque produced by the main gear. Induction worm gear motors are best suited for use in low-voltage applications such as electric cars, renewable energy systems, and industrial equipment. They come with a wide range of power-supply options, including twelve-volt, 24-volt, and 36-volt AC power supplies.
These types of motors can be used in many industrial settings, including elevators, airport equipment, food packaging facilities, and more. They also produce less noise than other types of motors, which makes them a popular choice for manufacturers with limited space. The efficiency of worm gearmotors makes them an excellent choice for applications where noise is an issue. Induction worm gear motors can be compact and extremely high-torque.
While the Induction worm gear motor is most widely used in industrial applications, there are other kinds of gearmotors available. Some types are more efficient than others, and some are more expensive than others. For your application, choosing the correct motor and gearbox combination is crucial to achieving the desired result. You’ll find that the Induction worm gear motor is an excellent choice for many applications. The benefits of an Induction worm gear motor can’t be overstated.
The DC gear motor is an excellent choice for high-end industrial applications. This type of gearmotor is smaller and lighter than a standard AC motor and can deliver up to 200 watts of torque. A gear ratio of three to two can be found in these motors, which makes them ideal for a wide range of applications. A high-quality DC gear motor is a great choice for many industrial applications, as they can be highly efficient and provide a high level of reliability.
Electric gear motors are a versatile and widely used type of electric motor. Nevertheless, there are some applications that don’t benefit from them, such as applications with high shaft speed and low torque. Applications such as fan motors, pump and scanning machines are examples of such high-speed and high-torque demands. The most important consideration when choosing a gearmotor is its efficiency. Choosing the right size will ensure the motor runs efficiently at peak efficiency and will last for years.
Motor

Parallel shaft helical gear motor

The FC series parallel shaft helical gearmotor is a compact, lightweight, and high-performance unit that utilizes a parallel shaft structure. Its compact design is complemented by high transmission efficiency and high carrying capacity. The motor’s material is 20CrMnTi alloy steel. The unit comes with either a flanged input or bolt-on feet for installation. Its low noise and compact design make it an ideal choice for a variety of applications.
The helical gears are usually arranged in two rows of one another. Each row contains one or more rows of teeth. The parallel row has the teeth in a helical pattern, while the helical rows are lined up parallelly. In addition to this, the cross helical gears have a point contact design and do not overlap. They can be either parallel or crossed. The helical gear motors can have any number of helical pairs, each with a different pitch circle diameter.
The benefits of the Parallel Shaft Helical Gearbox include high temperature and pressure handling. It is produced by skilled professionals using cutting-edge technology, and is widely recognized for its high performance. It is available in a range of technical specifications and is custom-made to suit individual requirements. These gearboxes are durable and low-noise and feature high reliability. You can expect to save up to 40% of your energy by using them.
The parallel shaft helical gear motors are designed to reduce the speed of a rotating part. The nodular cast iron housing helps make the unit robust in difficult environments, while the precision-machined gears provide quiet, vibration-free operation. These motors are available in double reduction, triple reduction, and quadruple reduction. The capacity ranges from 0.12 kW to 45 kW. You can choose from a wide variety of capacities, depending on the size of your gearing needs.
The SEW-EURODRIVE parallel shaft helical gearmotor is a convenient solution for space-constrained applications. The machine’s modular design allows for easy mounting and a wide range of ambient temperatures. They are ideal for a variety of mechanical applications, including conveyors, augers, and more. If you want a small footprint, the SEW-EURODRIVE parallel shaft helical gear motor is the best solution for you.
The parallel shaft helical gears are advantageous for both high and low speed applications. Parallel helical gears are also suitable for low speed and low duty applications. A good example of a cross-helix gear is the oil pump of an internal combustion engine. Both types of helical gears are highly reliable and offer vibration-free operation. They are more costly than conventional gear motors, but offer more durability and efficiency.
Motor

Helical gear unit

This helical gear unit is designed to operate under a variety of demanding conditions and can be used in a wide range of applications. Designed for long life and high torque density, this gear unit is available in a variety of torques and gear ratios. Its design and construction make it compatible with a wide range of critical mechanical systems. Common applications include conveyors, material handling, steel mills, and paper mills.
Designed for high-performance applications, the Heidrive helical gear unit provides superior performance and value. Its innovative design allows it to function well under a wide range of operating conditions and is highly resistant to damage. These gear motors can be easily combined with a helical gear unit. Their combined power output is 100 Nm, and they have a high efficiency of up to 90%. For more information about the helical gear motor, contact a Heidrive representative.
A helical gear unit can be classified by its reference section in the standard plane or the turning plane. Its center gap is the same as that of a spur gear, and its number of teeth is the same. In addition to this, the helical gear has a low axial thrust, which is another important characteristic. The helical gear unit is more efficient at transferring torque than a spur gear, and it is quieter, too.
These units are designed to handle large loads. Whether you are using them for conveyors, augers, or for any other application that involves high-speed motion, a helical gear unit will deliver maximum performance. A helical gear unit from Flender can handle 400,000 tasks with a high degree of reliability. Its high efficiency and high resistance to load ensures high plant availability. These gear motors are available in a variety of sizes, from single-speed to multi-speed.
PEC geared motors benefit from decades of design experience and high quality materials. They are robust, quiet, and offer excellent performance. They are available in multiple configurations and are dimensionally interchangeable with other major brands. The gear motors are manufactured as modular kits to minimize inventory. They can be fitted with additional components, such as backstops and fans. This makes it easy to customize your gear motors and save money while reducing costs.
Another type of helical gears is the double helical gear. The double helical gear unit has two helical faces with a gap between them. They are better for enclosed gear systems as they provide greater tooth overlap and smoother performance. Compared to double helical gears, they are smaller and more flexible than the Herringbone type. So, if you’re looking for a gear motor, a helical gear unit may be perfect for you.

China NEMA17 (42mm) Planetary DC Gear Stepper Motor with Planetary Gearbox Reduction Ratio 5.18: 1     dc motor	China NEMA17 (42mm) Planetary DC Gear Stepper Motor with Planetary Gearbox Reduction Ratio 5.18: 1     dc motor
editor by czh 2022-12-26