China 6V 7rpm Small PMDC Planetary Gearbox comer planetary gearbox

Product Description

6V 7rpm Small PMDC Planetary Gearbox
 

Merchandise Description

1. Higher effectiveness with aggressive price tag
2. Gearbox Plastic content
three. Extensive range pace ration

 
1)Specifications:

Product ZWBPD571571-864
Voltage Selection (V) 6.-12
Rated Voltage (V) twelve.
Totally free Load Velocity (rpm) 7
Feee-load Existing (mA) ninety
Rated Velocity (rpm) 7
Rated Current (mA) one hundred thirty
Rated Torque (mN.cm) 3,116
Output Energy (W) .seven
Gearbox Rated Torque (g.cm) 10,000
Gearbox immediate Torque (g.cm) 30,000
Pace Ration 864
Total Length (mm) 58.six

 

Model Application Parameters Rated Torque of Gear Box Instant Torque of Equipment Box Gear Ratio Gear Box Duration
L1
Rated At No Load At Rated Load Overall Length
L
Voltage Velocity Current Velocity Current Torque
VDC rpm mA rpm mA gf.cm mN.m mm gf.cm gf.cm mm
ZWBPD571571-24 12. 273 eighty 237 125 one hundred seventy five 17.2 48. ten thousand 30000 24 22.9
ZWBPD571571-36 twelve. 182 80 158 a hundred twenty five 263 25.8 ten thousand 30000 36
ZWBPD571571-sixty four 12. 102 90 89 125 308 thirty.two 53.three 10000 30000 64 28.two
ZWBPD571571-ninety six twelve. sixty eight 90 fifty nine one hundred twenty five 462 45.three ten thousand 30000 96
ZWBPD571571-144 twelve. 45 ninety 39 a hundred twenty five 693 sixty seven.9 10000 30000 144
ZWBPD571571-216 twelve. 30 ninety 26 125 1039 a hundred and one.9 10000 30000 216
ZWBPD571571-256 12. 24 90 22 one hundred thirty 923 ninety.six 58.6 10000 30000 256 33.five
ZWBPD571571-384 12. 16 90 15 130 1385 136 ten thousand 30000 384
ZWBPD571571-576 twelve. eleven ninety ten 130 2078 204 10000 30000 576
ZWBPD571571-864 twelve. 7 90 7 one hundred thirty 3116 306 10000 30000 864
ZWBPD571571-1296 twelve. 5 90 four one hundred thirty 4675 458 10000 30000 1296

above technical specs just for reference and customizable in accordance to specifications.

Integrated Push Control Module.

Please let us know your requirements and we will give you with micro transmission solutions.

2)Second Drawing:

Comprehensive Images

 

 

Application

Smart wearable devices   look at,VR,AR,XR and etc.
House application kitchen area appliances, stitching machines, corn popper, vacuum cleaner, backyard resource, sanitary ware, window curtain, smart closestool, sweeping robotic, electrical power seat, standing desk, electric couch, Tv, computer, treadmill, spyhole, cooker hood, electrical drawer, electric mosquito net, smart cabinet, clever wardrobe, automated cleaning soap dispenser, UV child bottle sterilizer, lifting scorching pot cookware, dishwasher, washing equipment, foodstuff breaking device, dryer, air conditioning, dustbin, coffee equipment, whisk,intelligent lock,bread maker,Window cleaning robot and and so on.
conversation products 5G foundation station,video clip convention,cellular telephone and and so on.
Office automation equipments   scanners, printers, multifunction machines duplicate equipment, fax (FAX paper cutter), computer peripheral, bank machine,  display, lifting socket,  screen,notebook Personal computer and and so forth.
Automotive products  conditioning damper actuator, car DVD,doorway lock actuator, retractable rearview mirror, meters, optic axis management system, head light-weight beam level adjuster, automobile h2o pump, car antenna, lumbar assist, EPB, auto tail gate electric putter, HUD, head-up screen, vehicle sunroof, EPS, AGS, automobile window, head restraint, E-booster, vehicle seat, motor vehicle charging station and etc.
Toys and models  radio handle design, automatic cruise control, journey-on toy, educational robotic, programming robotic, medical robotic, automated feeder, clever creating blocks, escort robot and and so forth.
Health-related equipments  blood strain meter, breath equipment, healthcare cleansing pump, health care mattress, blood stress screens, health-related ventilator, surgical staplers, infusion pump, dental instrument, self-clotting cutter, wound cleansing pump for orthopedic surgical procedure,digital cigarette, eyebrow pencil,fascia gun, , surgical robotic,laboratory automation and etc.
Industrials   flow handle valves, seismic testing,automatic reclosing,Agricultural unmanned aerial motor vehicle,computerized feeder ,smart specific cupboard and etc.
Electrical power tools  electric powered drill, screwdriver,backyard tool and etc.
Precision instruments  optics instruments,automatic vending machine, wire-stripping equipment and and so on.
Personal care tooth brush, hair clipper, electric powered shaver, massager, vibrator, hair dryer, rubdown machine, scissor hair device, foot grinder,anti-myopia pen, facial beauty tools, hair roller,Electric powered threading knife,Electrical power Excellent PORE, Puff machine,eyebrow tweezers and and many others.
Client electronics digital camera, cellular phone,digital digital camera, computerized retracting system,camcorder,  kinescope DVD,headphone stereo, cassette tape recorder, bluetooth earbud charging case, turntable, pill,UAV(unmanned aerial motor vehicle),surveillance camera,PTZ camera, rotating wise speaker and etc.
robots instructional robotic, programming robot, health care robotic, escort robotic and and so forth.

 

Organization Profile

HangZhou CZPT Machinery & Electronics Co., Ltd was set up in 2001,We supply the overall push answer for customers from layout, tooling fabrication, components producing and assembly. 

Workshop


Tests Products

1) Competitive Benefits

  • one) Aggressive Advantages
    19+calendar year expertise in production motor gearbox
    We provide technical assistance from r&d, prototype, screening, assembly and serial production , ODM &OEM
    Aggressive Price
    Solution Performance: Lower sound, Higher performance, Prolonged lifespan
    Prompt Shipping: fifteen operating days right after payment
    Tiny Orders Accepted

 2) Primary Goods

  • Precision reduction gearbox and its diameter:3.4mm-38mm,voltage:1.5-24V,electricity: .01-40W,output pace:5-2000rpm and output torque:1. gf.cm -50kgf.cm,

  • Tailored worm and gear transmission equipment
  • Exact electromechanical motion module
  • Precise component and assembly of plastic and metallic powder injection.

 

Our Companies

  • ODM & OEM
  • Gearbox layout and development
  • Associated technology help
  • Micro travel gearbox custom made remedy

Packaging & Shipping

one) Packing Specifics

packed in nylon to begin with, then carton, and then strengthened with wood situation for outer packing.
Or according to client’s requirement.

two) Shipping and delivery Particulars

samples will be transported inside of ten times
batch order foremost time according to the genuine situation.

 

Certifications

Certifications

We Have handed to keep ISO9001:2015(CN11/3571),ISO14001:2004(U006616E0153R3M), ISO13485:2016(CN18/42018) and IATF16949:2016(CN11/3571.01).

and a lot more…

 

FAQ

FAQ

1. Can you make the gearbox with custom made specs?
Of course. We have design and style and advancement group, also a excellent term of engineers, every of them have
numerous function many years expertise.

two.Do you give the samples?
Of course. Our business can supply the samples to you, and the shipping time is about 5-15days in accordance to the specification of gearbox you want.

3.What is your MOQ?
Our MOQ is 2000pcs. But at the commencing of our company, we accept small order.

4. Do you have the merchandise in stock?
I am sorry we donot have the product in stock, All products are produced with orders.

5. Do you offer engineering support?
Of course. Our firm have layout and advancement group, we can give technological innovation help if you
need.

6.How to ship to us?
We will ship the merchandise to you according to the DHL or UPS or FEDEX and so forth account you provide. 

seven.How to shell out the income?
We acknowledge T/T in advance. Also we have various financial institution account for receiving cash, like US dollors or RMB and so forth.

8. How can I know the item is appropriate for me?
Frist, you need to offer us the more specifics details about the product. We will suggest the item to you in accordance to your necessity of specification. Soon after you verify, we will put together the samples to you. also we will supply some great developments in accordance to your merchandise use.

9. Can I arrive to your company to check out?
Indeed, you can come to our business to check out at whenever, and welcome to check out our organization.

10. How do get in touch with us ?
Please send an inquiry

US $6.5-8.5
/ Piece
|
1,000 Pieces

(Min. Order)

###

Application: Motor, Toy, Car, Automatic Door & Window
Function: Change Drive Torque, Speed Reduction
Layout: Cycloidal
Hardness: Hardened Tooth Surface
Installation: Customize
Step: Customize

###

Samples:
US$ 90/Piece
1 Piece(Min.Order)

|
Request Sample

###

Customization:

###

Model ZWBPD020020-864
Voltage Range (V) 6.0-12
Rated Voltage (V) 12.0
Free Load Speed (rpm) 7
Feee-load Current (mA) 90
Rated Speed (rpm) 7
Rated Current (mA) 130
Rated Torque (mN.cm) 3,116
Output Power (W) 0.7
Gearbox Rated Torque (g.cm) 10,000
Gearbox instant Torque (g.cm) 30,000
Speed Ration 864
Total Length (mm) 58.6

###

Model Application Parameters Rated Torque of Gear Box Instant Torque of Gear Box Gear Ratio Gear Box Length
L1
Rated At No Load At Rated Load Overall Length
L
Voltage Speed Current Speed Current Torque
VDC rpm mA rpm mA gf.cm mN.m mm gf.cm gf.cm mm
ZWBPD020020-24 12.0 273 80 237 125 175 17.2 48.0 10000 30000 24 22.9
ZWBPD020020-36 12.0 182 80 158 125 263 25.8 10000 30000 36
ZWBPD020020-64 12.0 102 90 89 125 308 30.2 53.3 10000 30000 64 28.2
ZWBPD020020-96 12.0 68 90 59 125 462 45.3 10000 30000 96
ZWBPD020020-144 12.0 45 90 39 125 693 67.9 10000 30000 144
ZWBPD020020-216 12.0 30 90 26 125 1039 101.9 10000 30000 216
ZWBPD020020-256 12.0 24 90 22 130 923 90.6 58.6 10000 30000 256 33.5
ZWBPD020020-384 12.0 16 90 15 130 1385 136 10000 30000 384
ZWBPD020020-576 12.0 11 90 10 130 2078 204 10000 30000 576
ZWBPD020020-864 12.0 7 90 7 130 3116 306 10000 30000 864
ZWBPD020020-1296 12.0 5 90 4 130 4675 458 10000 30000 1296

###

Smart wearable devices   watch,VR,AR,XR and etc.
Household application kitchen appliances, sewing machines, corn popper, vacuum cleaner, garden tool, sanitary ware, window curtain, intelligent closestool, sweeping robot, power seat, standing desk, electric sofa, TV, computer, treadmill, spyhole, cooker hood, electric drawer, electric mosquito net, intelligent cupboard, intelligent wardrobe, automatic soap dispenser, UV baby bottle sterilizer, lifting hot pot cookware, dishwasher, washing machine, food breaking machine, dryer, air conditioning, dustbin, coffee machine, whisk,smart lock,bread maker,Window cleaning robot and etc.
communication equipment 5G base station,video conference,mobile phone and etc.
Office automation equipments   scanners, printers, multifunction machines copy machines, fax (FAX paper cutter), computer peripheral, bank machine,  screen, lifting socket,  display,notebook PC and etc.
Automotive products  conditioning damper actuator, car DVD,door lock actuator, retractable rearview mirror, meters, optic axis control device, head light beam level adjuster, car water pump, car antenna, lumbar support, EPB, car tail gate electric putter, HUD, head-up display, vehicle sunroof, EPS, AGS, car window, head restraint, E-booster, car seat, vehicle charging station and etc.
Toys and models  radio control model, automatic cruise control, ride-on toy, educational robot, programming robot, medical robot, automatic feeder, intelligent building blocks, escort robot and etc.
Medical equipments  blood pressure meter, breath machine, medical cleaning pump, medical bed, blood pressure monitors, medical ventilator, surgical staplers, infusion pump, dental instrument, self-clotting cutter, wound cleaning pump for orthopedic surgery,electronic cigarette, eyebrow pencil,fascia gun, , surgical robot,laboratory automation and etc.
Industrials   flow control valves, seismic testing,automatic reclosing,Agricultural unmanned aerial vehicle,automatic feeder ,intelligent express cabinet and etc.
Electric power tools  electric drill, screwdriver,garden tool and etc.
Precision instruments  optics instruments,automatic vending machine, wire-stripping machine and etc.
Personal care tooth brush, hair clipper, electric shaver, massager, vibrator, hair dryer, rubdown machine, scissor hair machine, foot grinder,anti-myopia pen, facial beauty equipment, hair curler,Electric threading knife,POWER PERFECT PORE, Puff machine,eyebrow tweezers and etc.
Consumer electronics camera, mobile phone,digital camera, automatic retracting device,camcorder,  kinescope DVD,headphone stereo, cassette tape recorder, bluetooth earbud charging case, turntable, tablet,UAV(unmanned aerial vehicle),surveillance camera,PTZ camera, rotating smart speaker and etc.
robots educational robot, programming robot, medical robot, escort robot and etc.
US $6.5-8.5
/ Piece
|
1,000 Pieces

(Min. Order)

###

Application: Motor, Toy, Car, Automatic Door & Window
Function: Change Drive Torque, Speed Reduction
Layout: Cycloidal
Hardness: Hardened Tooth Surface
Installation: Customize
Step: Customize

###

Samples:
US$ 90/Piece
1 Piece(Min.Order)

|
Request Sample

###

Customization:

###

Model ZWBPD020020-864
Voltage Range (V) 6.0-12
Rated Voltage (V) 12.0
Free Load Speed (rpm) 7
Feee-load Current (mA) 90
Rated Speed (rpm) 7
Rated Current (mA) 130
Rated Torque (mN.cm) 3,116
Output Power (W) 0.7
Gearbox Rated Torque (g.cm) 10,000
Gearbox instant Torque (g.cm) 30,000
Speed Ration 864
Total Length (mm) 58.6

###

Model Application Parameters Rated Torque of Gear Box Instant Torque of Gear Box Gear Ratio Gear Box Length
L1
Rated At No Load At Rated Load Overall Length
L
Voltage Speed Current Speed Current Torque
VDC rpm mA rpm mA gf.cm mN.m mm gf.cm gf.cm mm
ZWBPD020020-24 12.0 273 80 237 125 175 17.2 48.0 10000 30000 24 22.9
ZWBPD020020-36 12.0 182 80 158 125 263 25.8 10000 30000 36
ZWBPD020020-64 12.0 102 90 89 125 308 30.2 53.3 10000 30000 64 28.2
ZWBPD020020-96 12.0 68 90 59 125 462 45.3 10000 30000 96
ZWBPD020020-144 12.0 45 90 39 125 693 67.9 10000 30000 144
ZWBPD020020-216 12.0 30 90 26 125 1039 101.9 10000 30000 216
ZWBPD020020-256 12.0 24 90 22 130 923 90.6 58.6 10000 30000 256 33.5
ZWBPD020020-384 12.0 16 90 15 130 1385 136 10000 30000 384
ZWBPD020020-576 12.0 11 90 10 130 2078 204 10000 30000 576
ZWBPD020020-864 12.0 7 90 7 130 3116 306 10000 30000 864
ZWBPD020020-1296 12.0 5 90 4 130 4675 458 10000 30000 1296

###

Smart wearable devices   watch,VR,AR,XR and etc.
Household application kitchen appliances, sewing machines, corn popper, vacuum cleaner, garden tool, sanitary ware, window curtain, intelligent closestool, sweeping robot, power seat, standing desk, electric sofa, TV, computer, treadmill, spyhole, cooker hood, electric drawer, electric mosquito net, intelligent cupboard, intelligent wardrobe, automatic soap dispenser, UV baby bottle sterilizer, lifting hot pot cookware, dishwasher, washing machine, food breaking machine, dryer, air conditioning, dustbin, coffee machine, whisk,smart lock,bread maker,Window cleaning robot and etc.
communication equipment 5G base station,video conference,mobile phone and etc.
Office automation equipments   scanners, printers, multifunction machines copy machines, fax (FAX paper cutter), computer peripheral, bank machine,  screen, lifting socket,  display,notebook PC and etc.
Automotive products  conditioning damper actuator, car DVD,door lock actuator, retractable rearview mirror, meters, optic axis control device, head light beam level adjuster, car water pump, car antenna, lumbar support, EPB, car tail gate electric putter, HUD, head-up display, vehicle sunroof, EPS, AGS, car window, head restraint, E-booster, car seat, vehicle charging station and etc.
Toys and models  radio control model, automatic cruise control, ride-on toy, educational robot, programming robot, medical robot, automatic feeder, intelligent building blocks, escort robot and etc.
Medical equipments  blood pressure meter, breath machine, medical cleaning pump, medical bed, blood pressure monitors, medical ventilator, surgical staplers, infusion pump, dental instrument, self-clotting cutter, wound cleaning pump for orthopedic surgery,electronic cigarette, eyebrow pencil,fascia gun, , surgical robot,laboratory automation and etc.
Industrials   flow control valves, seismic testing,automatic reclosing,Agricultural unmanned aerial vehicle,automatic feeder ,intelligent express cabinet and etc.
Electric power tools  electric drill, screwdriver,garden tool and etc.
Precision instruments  optics instruments,automatic vending machine, wire-stripping machine and etc.
Personal care tooth brush, hair clipper, electric shaver, massager, vibrator, hair dryer, rubdown machine, scissor hair machine, foot grinder,anti-myopia pen, facial beauty equipment, hair curler,Electric threading knife,POWER PERFECT PORE, Puff machine,eyebrow tweezers and etc.
Consumer electronics camera, mobile phone,digital camera, automatic retracting device,camcorder,  kinescope DVD,headphone stereo, cassette tape recorder, bluetooth earbud charging case, turntable, tablet,UAV(unmanned aerial vehicle),surveillance camera,PTZ camera, rotating smart speaker and etc.
robots educational robot, programming robot, medical robot, escort robot and etc.

Planetary Gearbox

This article will explore the design and applications of a planetary gearbox. The reduction ratio of a planetary gearbox is dependent on the number of teeth in the gears. The ratios of planetary gearboxes are usually lower than those of conventional mechanical transmissions, which are mainly used to drive engines and generators. They are often the best choice for heavy-duty applications. The following are some of the advantages of planetary gearboxes.
planetarygearbox

planetary gearboxes

Planetary gearboxes work on a similar principle to solar systems. They rotate around a center gear called the sun gear, and two or more outer gears, called planet gears, are connected by a carrier. These gears then drive an output shaft. The arrangement of planet gears is similar to that of the Milky Way’s ring of planets. This arrangement produces the best torque density and stiffness for a gearbox.
As a compact alternative to normal pinion-and-gear reducers, planetary gearing offers many advantages. These characteristics make planetary gearing ideal for a variety of applications, including compactness and low weight. The efficiency of planetary gearing is enhanced by the fact that ninety percent of the input energy is transferred to the output. The gearboxes also have low noise and high torque density. Additionally, their design offers better load distribution, which contributes to a longer service life.
Planetary gears require lubrication. Because they have a smaller footprint than conventional gears, they dissipate heat well. In fact, lubrication can even lower vibration and noise. It’s also important to keep the gears properly lubricated to prevent the wear and tear that comes with use. The lubrication in planetary gears also helps keep them operating properly and reduces wear and tear on the gears.
A planetary gearbox uses multiple planetary parts to achieve the reduction goal. Each gear has an output shaft and a sun gear located in the center. The ring gear is fixed to the machine, while the sun gear is attached to a clamping system. The outer gears are connected to the carrier, and each planetary gear is held together by rings. This arrangement allows the planetary gear to be symmetrical with respect to the input shaft.
The gear ratio of a planetary gearbox is defined by the sun gear’s number of teeth. As the sun gear gets smaller, the ratio of the gear will increase. The ratio range of planetary gears ranges from 3:1 to ten to one. Eventually, however, the sun gear becomes too small, and the torque will fall significantly. The higher the ratio, the less torque the gears can transmit. So, planetary gears are often referred to as “planetary” gears.
planetarygearbox

Their design

The basic design of a Planetary Gearbox is quite simple. It consists of three interconnecting links, each of which has its own torque. The ring gear is fixed to the frame 0 at O, and the other two are fixed to each other at A and B. The ring gear, meanwhile, is attached to the planet arm 3 at O. All three parts are connected by joints. A free-body diagram is shown in Figure 9.
During the development process, the design team will divide the power to each individual planet into its respective power paths. This distribution will be based on the meshing condition of all gears in the system. Then, the design team will proceed to determine the loads on individual gear meshes. Using this method, it is possible to determine the loads on individual gear meshes and the shape of ring gear housing.
Planetary Gearboxes are made of three gear types. The sun gear is the center, which is connected to the other two gears by an internal tooth ring gear. The planet pinions are arranged in a carrier assembly that sets their spacing. The carrier also incorporates an output shaft. The three components in a Planetary Gearbox mesh with each other, and they rotate together as one. Depending on the application, they may rotate at different speeds or at different times.
The planetary gearbox’s design is unique. In a planetary gearbox, the input gear rotates around the central gear, while the outer gears are arranged around the sun gear. In addition, the ring gear holds the structure together. A carrier connects the outer gears to the output shaft. Ultimately, this gear system transmits high torque. This type of gearbox is ideal for high-speed operations.
The basic design of a Planetary Gearbox consists of multiple contacts that must mesh with each other. A single planet has an integer number of teeth, while the ring has a non-integer number. The teeth of the planets must mesh with each other, as well as the sun. The tooth counts, as well as the planet spacing, play a role in the design. A planetary gearbox must have an integer number of teeth to function properly.

Applications

In addition to the above-mentioned applications, planetary gearing is also used in machine tools, plastic machinery, derrick and dock cranes, and material handling equipments. Further, its application is found in dredging equipment, road-making machinery, sugar crystallizers, and mill drives. While its versatility and efficiency makes it a desirable choice for many industries, its complicated structure and construction make it a complex component.
Among the many benefits of using a planetary gearbox, the ability to transmit greater torque into a controlled space makes it a popular choice for many industries. Moreover, adding additional planet gears increases the torque density. This makes planetary gears suitable for applications requiring high torque. They are also used in electric screwdrivers and turbine engines. However, they are not used in everything. Some of the more common applications are discussed below:
One of the most important features of planetary gearboxes is their compact footprint. They are able to transmit torque while at the same time reducing noise and vibration. In addition to this, they are able to achieve a high speed without sacrificing high-quality performance. The compact footprint of these gears also allows them to be used in high-speed applications. In some cases, a planetary gearbox has sliding sections. Some of these sections are lubricated with oil, while others may require a synthetic gel. Despite these unique features, planetary gears have become common in many industries.
Planetary gears are composed of three components. The sun gear is the input gear, whereas the planet gears are the output gears. They are connected by a carrier. The carrier connects the input shaft with the output shaft. A planetary gearbox can be designed for various requirements, and the type you use will depend on the needs of your application. Its design and performance must meet your application’s needs.
The ratios of planetary gears vary depending on the number of planets. The smaller the sun gear, the greater the ratio. When planetary stages are used alone, the ratio range is 3:1 to 10:1. Higher ratios can be obtained by connecting several planetary stages together in the same ring gear. This method is known as a multi-stage gearbox. However, it can only be used in large gearboxes.
planetarygearbox

Maintenance

The main component of a planetary gearbox is the planetary gear. It requires regular maintenance and cleaning to remain in top shape. Demand for a longer life span protects all other components of the gearbox. This article will discuss the maintenance and cleaning procedures for planetary gears. After reading this article, you should know how to maintain your planetary gearbox properly. Hopefully, you can enjoy a longer life with your gearbox.
Firstly, it is important to know how to properly lubricate a planetary gearbox. The lubricant is essential as gears that operate at high speeds are subject to high levels of heat and friction. The housing of the planetary gearbox should be constructed to allow the heat to dissipate. The recommended oil is synthetic, and it should be filled between 30 and 50 percent. The lubricant should be changed at least every six months or as needed.
While it may seem unnecessary to replace a planetary gearbox, regular servicing will help it last a long time. A regular inspection will identify a problem and the appropriate repairs are needed. Once the planetary gearbox is full, it will plug with gear oil. To avoid this problem, consider getting the unit repaired instead of replacing the gearbox. This can save you a lot of money over a new planetary gearbox.
Proper lubrication is essential for a long life of your planetary gearbox. Oil change frequency should be based on oil temperature and operating speed. Oil at higher temperatures should be changed more frequently because it loses its molecular structure and cannot form a protective film. After this, oil filter maintenance should be performed every few months. Lastly, the gearbox oil needs to be checked regularly and replaced when necessary.

China 6V 7rpm Small PMDC Planetary Gearbox     comer planetary gearboxChina 6V 7rpm Small PMDC Planetary Gearbox     comer planetary gearbox
editor by czh 2023-01-20