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China manufacturer 42jxgt200K/42sth High Torque Solar Tracker NEMA 17 Planetary Gear Stepper Motor with Great quality

Product Description

Product Description

High Torque Solar Tracker Nema 17 Planetary Gear Stepper Motor
Model: 42JXGTS200K/42STH
Voltage: 6 ~ 400V DC
CE, Reach and RoHS approval
Optional components: magnetic/optical encoder; brake; connector
Customized shaft dimensions and technical specifications are available upon requested.


Customized Gear Motors for Typical Applications

Tarp Gear Motors

Slow Juicer Motors

Curtain & Window Motors

Robot Pool Cleaner Motors

Door & Gate Motors

Robot Lawn Mower Motors

Automatic Pool Cover Motors

Solar Tracking System Motors



Packaging & Shipping:
1, Waterproof plastic bag packed in foam box and carton as outer packing.
2, Export wooden box packaging for products.

Company Profile


  • Open for general discussion and questions
  • Time to market or theatre of operations can be substantially reduced
  • Talented team of engineers providing innovative technical solutions
  • One stop “supplier” and complete sub-system
  • Quality products provided at competitive low cost
  • Ability to ship world wide
  • On time delivery
  • Training at Customer locations
  • Fast service on return and repair results
  • Many repeated customers

Xihu (West Lake) Dis.zheng Motor Co., Ltd was established in 2003, this is a technology research and development, production, sales and services of state-level high-tech enterprises. 

The corporation has established a perfect quality assurance system, achieved ISO9001: 2015 quality Management system, ISO14001 Environmental management system, GB/T28001 Occupational CZPT and Safety Management system. 

The corporation professionally manufactures kinds of AC/DC gear motors, planetary gear motors, small gear motors, etc. Which are widely used in industrial automation, medical and health-care equipment, financial instruments, office automation, swimming pool cleaners, high efficiency juice, intelligent lawn mower, solar Automatic tracking system, kinds of massage CZPT care equipment, automatic doors, etc…And has obtained the following Production Certifications: CCC &CE identification, RoHS&REACH certificate, . The mainly markets are the USA, Europe, Israel, South Korea, Japan, ZheJiang , etc.



Q1: Are you a trading company or manufacturer?
A1: We are a professional OEM manufacturer.

Q2: What is your main product range?

A2: We manufacture both motors and gearboxes. Our main products are various AC/DC Planetary Gear Motors, AC/DC Right Angle Gear Motors, AC/DC Parallel Shaft Gear Motors, Small DC Motors, Compact AC Motors, Brushless DC Gear Motors, Motor Magnets, Gearboxes etc.. 

Q3: How about the MOQ of your motors?

A3: Customized testing samples are available before serial production.

Q4: What is the warranty period of your motors?

A4: We offer free maintenance in warranty period of 1 year.

Q5: Which shipping ways are available?

A5: DHL, UPS, FedEx, TNT are available for sample shipment. Sea/air/train shipments are available for serial production.

Shipping Cost:

Estimated freight per unit.

To be negotiated|

Freight Cost Calculator

Application: Universal, Industrial, Household Appliances, Car, Power Tools
Operating Speed: Low Speed
Excitation Mode: Excited


Customized Request


Benefits of a Planetary Motor

A planetary motor has many benefits. Its compact design and low noise makes it a good choice for any application. Among its many uses, planetary gear motors are found in smart cars, consumer electronics, intelligent robots, communication equipment, and medical technology. They can even be found in smart homes! Read on to discover the benefits of a planetary gear motor. You’ll be amazed at how versatile and useful it is!

Self-centering planet gears ensure a symmetrical force distribution

A planetary motor is a machine with multiple, interlocking planetary gears. The output torque is inversely proportional to the diameters of the planets, and the transmission size has no bearing on the output torque. A torsional stress analysis of the retaining structure for this type of motor found a maximum shear stress of 64 MPa, which is equivalent to a safety factor of 3.1 for 6061 aluminum. Self-centering planet gears are designed to ensure a symmetrical force distribution throughout the transmission system, with the weakest component being the pinions.
A planetary gearbox consists of ring and sun gears. The pitch diameters of ring and planet gears are nearly equal. The number of teeth on these gears determines the average gear-ratio per output revolution. This error is related to the manufacturing precision of the gears. The effect of this error is a noise or vibration characteristic of the planetary gearbox.
Another design for a planetary gearbox is a traction-based variant. This design eliminates the need for timing marks and other restrictive assembly conditions. The design of the ring gear is similar to that of a pencil sharpener mechanism. The ring gear is stationary while planet gears extend into cylindrical cutters. When placed on the sun’s axis, the pencil sharpening mechanism revolves around the ring gear to sharpen the pencil.
The JDS eliminates the need for conventional planetary carriers and is mated with the self-centering planet gears by dual-function components. The dual-function components synchronize the rolling motion and traction of the gears. They also eliminate the need for a carrier and reduce the force distribution between the rotor and stator.

Metal gears

A planetary motor is a type of electric drive that uses a series of metal gears. These gears share a load attached to the output shaft to generate torque. The planetary motor is often CNC controlled, with extra-long shafts, which allow it to fit into very compact designs. These gears are available in sizes from seven millimeters to 12 millimeters. They can also be fitted with encoders.
Planetary gearing is widely used in various industrial applications, including automobile transmissions, off-road transmissions, and wheel drive motors. They are also used in bicycles to power the shift mechanism. Another use for planetary gearing is as a powertrain between an internal combustion engine and an electric motor. They are also used in forestry applications, such as debarking equipment and sawing. They can be used in other industries as well, such as pulp washers and asphalt mixers.
Planetary gear sets are composed of three types of gears: a sun gear, planet gears, and an outer ring. The sun gear transfers torque to the planet gears, and the planet gears mesh with the outer ring gear. Planet carriers are designed to deliver high-torque output at low speeds. These gears are mounted on carriers that are moved around the ring gear. The planet gears mesh with the ring gears, and the sun gear is mounted on a moveable carrier.
Plastic planetary gear motors are less expensive to produce than their metal counterparts. However, plastic gears suffer from reduced strength, rigidity, and load capacity. Metal gears are generally easier to manufacture and have less backlash. Plastic planetary gear motor bodies are also lighter and less noisy. Some of the largest plastic planetary gear motors are made in collaboration with leading suppliers. When buying a plastic planetary gear motor, be sure to consider what materials it is made of.


The Mega Torque Planetary Encoder DC Geared Motor is designed with a Japanese Mabuchi motor RS-775WC, a 200 RPM base motor. It is capable of achieving stall torque at low speeds, which is impossible to achieve with a simple DC motor. The planetary encoder provides five pulses per revolution, making it perfect for applications requiring precise torque or position. This motor requires an 8mm hex coupling for proper use.
This encoder has a high resolution and is suitable for ZGX38REE, ZGX45RGG and ZGX50RHH. It features a magnetic disc and poles and an optical disc to feed back signals. It can count paulses as the motor passes through a hall on the circuit board. Depending on the gearbox ratio, the encoder can provide up to two million transitions per rotation.
The planetary gear motor uses a planetary gear system to distribute torque in synchrony. This minimizes the risk of gear failure and increases the overall output capacity of the device. On the other hand, a spur gear motor is a simpler design and cheaper to produce. The spur gear motor works better for lower torque applications as each gear bears all the load. As such, the torque capacity of the spur gear motor is lower than that of a planetary gear motor.
The REV UltraPlanetary gearbox is designed for FTC and has three different output shaft options. The output shaft is made of 3/8-inch hex, allowing for flexible shaft replacement. These motors are a great value as they can be used to meet a wide range of power requirements. The REV UltraPlanetary gearbox and motor are available for very reasonable prices and a female 5mm hex output shaft can be used.


One of the most common questions when selecting a planetary motor is “How durable is it?” This is a question that’s often asked by people. The good news is that planetary motors are extremely durable and can last for a long time if properly maintained. For more information, read on! This article will cover the durability and efficiency of planetary gearmotors and how you can choose the best one for your needs.
First and foremost, planetary gear sets are made from metal materials. This increases their lifespan. The planetary gear set is typically made of metals such as nickel-steel and steel. Some planetary gear motors use plastic. Steel-cut gears are the most durable and suitable for applications that require more torque. Nickel-steel gears are less durable, but are better able to hold lubricant.
Durability of planetary motor gearbox is important for applications requiring high torque versus speed. VEX VersaPlanetary gearboxes are designed for FRC(r) use and are incredibly durable. They are expensive, but they are highly customizable. The planetary gearbox can be removed for maintenance and replacement if necessary. Parts for the gearbox can be purchased separately. VEX VersaPlanetary gearboxes also feature a pinion clamped onto the motor shaft.
Dynamic modeling of the planetary gear transmission system is important for understanding its durability. In previous studies, uncoupled and coupled meshing models were used to investigate the effect of various design parameters on the vibration characteristics of the planetary gear system. This analysis requires considering the role of the mesh stiffness, structure stiffness, and moment of inertia. Moreover, dynamic models for planetary gear transmission require modeling the influence of multiple parameters, such as mesh stiffness and shaft location.


The planetary gear motor has multiple contact points that help the rotor rotate at different speeds and torques. This design is often used in stirrers and large vats of liquid. This type of motor has a low initial cost and is more commonly found in low-torque applications. A planetary gear motor has multiple contact points and is more effective for applications requiring high torque. Gear motors are often found in stirring mechanisms and conveyor belts.
A planetary gearmotor is typically made from four mechanically linked rotors. They can be used for various applications, including automotive and laboratory automation. The plastic input stage gears reduce noise at higher speeds. Steel gears can be used for high torques and a modified lubricant is often added to reduce weight and mass moment of inertia. Its low-cost design makes it an excellent choice for robots and other applications.
There are many different types of planetary gear motors available. A planetary gear motor has three gears, the sun gear and planet gears, with each sharing equal amounts of work. They are ideal for applications requiring high torque and low-resistance operation, but they require more parts than their single-stage counterparts. The steel cut gears are the most durable, and are often used in applications that require high speeds. The nickel-steel gears are more absorptive, which makes them better for holding lubricant.
A planetary gear motor is a high-performance electrical vehicle motor. A typical planetary gear motor has a 3000 rpm speed, a peak torque of 0.32 Nm, and is available in 24V, 36V, and 48V power supply. It is also quiet and efficient, requiring little maintenance and offering greater torque to a modern electric car. If you are thinking of buying a planetary gear motor, be sure to do a bit of research before purchasing one.

China manufacturer 42jxgt200K/42sth High Torque Solar Tracker NEMA 17 Planetary Gear Stepper Motor   with Great qualityChina manufacturer 42jxgt200K/42sth High Torque Solar Tracker NEMA 17 Planetary Gear Stepper Motor   with Great quality
editor by CX 2023-05-11

China best NEMA 17 Planetary Gearbox Stepper Motor with High Precison Low Backlash to 15′ ac motor

Product Description


Product Description

High Precision Planetary Gear Stepper Motor

The high precision planetary gear stepper motor is high precision and low noise with precision steel teeth,can withstand greater axial force and radial force. Higher concentricity, more stable transmission. These motors are available in standard:
Nema 17(42*34, 42*40)
Reduction ratio:1:5 , 1:7 , 1:10 , 1:16 ,1:20 ,1:25 , 1:35 ,1:40, 1:50,1:70;1:100. 
Nema 23(57*55)
Reduction ratio:1:5 , 1:7 , 1:10 , 1:16 ,1:20 ,1:25 , 1:35 ,1:40
Nema 24(60*55)
Reduction ratio:1:5 , 1:7 , 1:10 , 1:16 ,1:20 ,1:25 , 1:35 ,1:40
And 48 hours delivery, in stock .

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:

General Specification:
Housing Material Metal
Bearing at Output Ball Bearings
Max.Radial Load(10mm from flange) 260N
Max.Shaft Axial Load 80N
Backlash at No-load 1 stage≤15′,2 stage≤20′


42HS Hybrid Stepping Motor Specifications:
Model No. 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 34 2.93 1.3 2.2 3.5 270 4 30 0.22 ≤1:100
42HSC4409 40 2.5 1.5 1.65 3.3 380 4 40 0.3 ≤1:100

42HSC1409 Planetary Gearbox Specifications:
Reduction ratio 3 4 5 7 10 12 15 16 20 25 28 35 40 50 70 100
Total Height(L1+L2) (mm) 74 74 74 74 74 85 85 85 85 85 85 85 85 85 85 85
Output torque ( mN.m) 777 1036 1296 1814 2592 3045 3807 4060 5076 6345 7106 8883 10000 10000 10000 10000
Total Weight(g) 470 470 470 470 470 570 570 570 570 570 570 570 570 570 570 570
Number of gear trains 1 2
Reducer Length(L2)   (mm) 40 51
Efficiency 96% 94%


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.


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: Automation Control, Medical Equipment, Textile Mac
Speed: Low Speed
Number of Stator: Two-Phase
Excitation Mode: HB-Hybrid
Function: Control, Driving
Number of Poles: 2
US$ 42/Piece
1 Piece(Min.Order)

Request Sample



Customized Request

What Is a Gear Motor?

A gear motor is an electric motor coupled with a gear train. It uses either DC or AC power to achieve its purpose. The primary benefit of a gear reducer is its ability to multiply torque while maintaining a compact size. The trade-off of this additional torque comes in the form of a reduced output shaft speed and overall efficiency. However, proper gear technology and ratios provide optimum output and speed profiles. This type of motor unlocks the full potential of OEM equipment.

Inertial load

Inertial load on a gear motor is the amount of force a rotating device produces due to its inverse square relationship with its inertia. The greater the inertia, the less torque can be produced by the gear motor. However, if the inertia is too high, it can cause problems with positioning, settling time, and controlling torque and velocity. Gear ratios should be selected for optimal power transfer.
The duration of acceleration and braking time of a gear motor depends on the type of driven load. An inertia load requires longer acceleration time whereas a friction load requires breakaway torque to start the load and maintain it at its desired speed. Too short a time period can cause excessive gear loading and may result in damaged gears. A safe approach is to disconnect the load when power is disconnected to prevent inertia from driving back through the output shaft.
Inertia is a fundamental concept in the design of motors and drive systems. The ratio of mass and inertia of a load to a motor determines how well the motor can control its speed during acceleration or deceleration. The mass moment of inertia, also called rotational inertia, is dependent on the mass, geometry, and center of mass of an object.


There are many applications of gear motors. They provide a powerful yet efficient means of speed and torque control. They can be either AC or DC, and the two most common motor types are the three-phase asynchronous and the permanent magnet synchronous servomotor. The type of motor used for a given application will determine its cost, reliability, and complexity. Gear motors are typically used in applications where high torque is required and space or power constraints are significant.
There are two types of gear motors. Depending on the ratio, each gear has an output shaft and an input shaft. Gear motors use hydraulic pressure to produce torque. The pressure builds on one side of the motor until it generates enough torque to power a rotating load. This type of motors is not recommended for applications where load reversals occur, as the holding torque will diminish with age and shaft vibration. However, it can be used for precision applications.
The market landscape shows the competitive environment of the gear motor industry. This report also highlights key items, income and value creation by region and country. The report also examines the competitive landscape by region, including the United States, China, India, the GCC, South Africa, Brazil, and the rest of the world. It is important to note that the report contains segment-specific information, so that readers can easily understand the market potential of the geared motors market.


The safety factor, or SF, of a gear motor is an important consideration when selecting one for a particular application. It compensates for the stresses placed on the gearing and enables it to run at maximum efficiency. Manufacturers provide tables detailing typical applications, with multiplication factors for duty. A gear motor with a SF of three or more is suitable for difficult applications, while a gearmotor with a SF of one or two is suitable for relatively easy applications.
The global gear motor market is highly fragmented, with numerous small players catering to various end-use industries. The report identifies various industry trends and provides comprehensive information on the market. It outlines historical data and offers valuable insights on the industry. The report also employs several methodologies and approaches to analyze the market. In addition to providing historical data, it includes detailed information by market segment. In-depth analysis of market segments is provided to help identify which technologies will be most suitable for which applications.


A gear motor is an electric motor that is paired with a gear train. They are available in AC or DC power systems. Compared to conventional motors, gear reducers can maximize torque while maintaining compact dimensions. But the trade-off is the reduced output shaft speed and overall efficiency. However, when used correctly, a gear motor can produce optimal output and mechanical fit. To understand how a gear motor works, let’s look at two types: right-angle geared motors and inline geared motors. The first two types are usually used in automation equipment and in agricultural and medical applications. The latter type is designed for rugged applications.
In addition to its efficiency, DC gear motors are space-saving and have low energy consumption. They can be used in a number of applications including money counters and printers. Automatic window machines and curtains, glass curtain walls, and banknote vending machines are some of the other major applications of these motors. They can cost up to 10 horsepower, which is a lot for an industrial machine. However, these are not all-out expensive.
Electric gear motors are versatile and widely used. However, they do not work well in applications requiring high shaft speed and torque. Examples of these include conveyor drives, frozen beverage machines, and medical tools. These applications require high shaft speed, so gear motors are not ideal for these applications. However, if noise and other problems are not a concern, a motor-only solution may be the better choice. This way, you can use a single motor for multiple applications.


Geared motors are among the most common equipment used for drive trains. Proper maintenance can prevent damage and maximize their efficiency. A guide to gear motor maintenance is available from WEG. To prevent further damage, follow these maintenance steps:
Regularly check electrical connections. Check for loose connections and torque them to the recommended values. Also, check the contacts and relays to make sure they are not tangled or damaged. Check the environment around the gear motor to prevent dust from clogging the passageway of electric current. A proper maintenance plan will help you identify problems and extend their life. The manual will also tell you about any problems with the gearmotor. However, this is not enough – it is important to check the condition of the gearbox and its parts.
Conduct visual inspection. The purpose of visual inspection is to note any irregularities that may indicate possible problems with the gear motor. A dirty motor may be an indication of a rough environment and a lot of problems. You can also perform a smell test. If you can smell a burned odor coming from the windings, there may be an overheating problem. Overheating can cause the windings to burn and damage.
Reactive maintenance is the most common method of motor maintenance. In this type of maintenance, you only perform repairs if the motor stops working due to a malfunction. Regular inspection is necessary to avoid unexpected motor failures. By using a logbook to document motor operations, you can determine when it is time to replace the gear motor. In contrast to preventive maintenance, reactive maintenance requires no regular tests or services. However, it is recommended to perform inspections every six months.

China best NEMA 17 Planetary Gearbox Stepper Motor with High Precison Low Backlash to 15′   ac motor	China best NEMA 17 Planetary Gearbox Stepper Motor with High Precison Low Backlash to 15′   ac motor
editor by CX