Item Description
8MM DC Planetary plastic dc Gear Motor
Solution Description
earlier mentioned technical specs just for reference and customizable according to demands.
motor technical specs:8mm motor | |
motors (optional) | brushed motor,stepper motor |
voltage(optional) | three-12v |
input speed | <=30000rpm |
existing | 150mA max |
performance Knowledge:8mm Planetary Gearbox Stepper Motor/Coreless Motor | |||||||
Model | Rated Velocity | Max Velocity | Max Rated Torque | Max Instantaneous Torque | Reduction Ratio | Gearbox Size | All round Duration |
rpm | rpm | gf.cm | gf.cm | mm | mm | ||
ZWBPD008008-4 | 3111 | 4233 | fifty | 200 | 4 | eight.6 | 23.one |
ZWBPD008008-five | 2100 | 2857 | 50 | two hundred | five | 8.six | 23.1 |
ZWBPD008008-thirteen | 864 | 1122 | a hundred | 300 | thirteen | eleven.three | twenty five.eight |
ZWBPD008008-19 | 583 | 758 | one hundred | three hundred | 19 | eleven.three | twenty five.8 |
ZWBPD008008-28 | 394 | 511 | one hundred | three hundred | 28 | 11.three | 25.8 |
ZWBPD008008-47 | 240 | 306 | two hundred | 600 | forty seven | 14. | 28.5 |
ZWBPD008008-sixty nine | 162 | 207 | two hundred | 600 | 69 | 14. | 28.five |
ZWBPD008008-102 | 109 | one hundred forty | 200 | 600 | 102 | fourteen. | 28.5 |
ZWBPD008008-152 | 74 | ninety four | two hundred | 600 | 152 | 14. | 28.5 |
ZWBPD008008-168 | 67 | eighty four | 300 | 900 | 168 | sixteen.seven | 31.two |
ZWBPD008008-249 | forty five | 56 | 300 | 900 | 249 | sixteen.seven | 31.2 |
ZWBPD008008-369 | thirty | 38 | 300 | 900 | 369 | sixteen.7 | 31.2 |
ZWBPD008008-546 | 21 | 26 | 300 | 900 | 546 | sixteen.7 | 31.2 |
ZWBPD008008-809 | fourteen | 17 | three hundred | 900 | 809 | 16.7 | 31.two |
* The over specifications are subject matter to modify without prior observe. They are for reference only and can be customized as essential. |
Make sure you permit us know your needs and we will provide you with micro transmission options.
Solution information present:
Application
Sensible wearable devices | look at,VR,AR,XR and etc. |
House application | kitchen appliances, stitching equipment, corn popper, vacuum cleaner, backyard garden instrument, sanitary ware, window curtain, intelligent closestool, sweeping robot, electricity seat, standing desk, electric powered sofa, Television, laptop, treadmill, spyhole, cooker hood, electric drawer, electric mosquito internet, smart cabinet, intelligent wardrobe, automatic cleaning soap dispenser, UV little one bottle sterilizer, lifting very hot pot cookware, dishwasher, washing machine, foods breaking machine, dryer, air conditioning, dustbin, coffee machine, whisk,intelligent lock,bread maker,Window cleaning robotic and and so forth. |
interaction equipment | 5G foundation station,video clip meeting,cellular mobile phone and and so forth. |
Place of work automation equipments | scanners, printers, multifunction devices copy devices, fax (FAX paper cutter), computer peripheral, financial institution equipment, display, lifting socket, display,notebook Computer and and so on. |
Automotive products | conditioning damper actuator, vehicle DVD,door lock actuator, retractable rearview mirror, meters, optic axis control device, head gentle beam stage adjuster, automobile h2o pump, auto antenna, lumbar support, EPB, automobile tail gate electric putter, HUD, head-up display, vehicle sunroof, EPS, AGS, vehicle window, head restraint, E-booster, automobile seat, vehicle charging station and and so forth. |
Toys and models | radio handle model, automated cruise control, journey-on toy, instructional robot, programming robot, health care robotic, automatic feeder, intelligent developing blocks, escort robotic and and many others. |
Health-related equipments | blood pressure meter, breath equipment, health care cleaning pump, health-related bed, blood strain monitors, health care ventilator, surgical staplers, infusion pump, dental instrument, self-clotting cutter, wound cleaning pump for orthopedic surgical treatment,electronic cigarette, eyebrow pencil,fascia gun, , surgical robot,laboratory automation and and so on. |
Industrials | flow management valves, seismic testing,computerized reclosing,Agricultural unmanned aerial motor vehicle,computerized feeder ,intelligent categorical cupboard and and so on. |
Electric powered energy tools | electric drill, screwdriver,backyard garden tool and and many others. |
Precision instruments | optics instruments,automated vending device, wire-stripping machine and etc. |
Personal care | tooth brush, hair clipper, electrical shaver, massager, vibrator, hair dryer, rubdown machine, scissor hair equipment, foot grinder,anti-myopia pen, facial beauty tools, hair curler,Electrical threading knife,Energy Ideal PORE, Puff machine,eyebrow tweezers and and many others. |
Consumer electronics | camera, cellular cellphone,digital camera, automated retracting system,camcorder, kinescope DVD,headphone stereo, cassette tape recorder, bluetooth earbud charging circumstance, turntable, tablet,UAV(unmanned aerial vehicle),surveillance digicam,PTZ digicam, rotating smart speaker and and many others. |
robots | instructional robot, programming robotic, health care robot, escort robot and etc. |
Business Profile
HangZhou CZPT Machinery & Electronics Co., Ltd was proven in 2001,We offer the total travel solution for clients from layout, tooling fabrication, elements producing and assembly.
Workshop
Screening Tools
1) Aggressive Rewards
- one) Aggressive Positive aspects
19+12 months experience in production motor gearbox
We give complex help from r&d, prototype, tests, assembly and serial creation , ODM &OEM
Aggressive Cost
Solution Overall performance: Lower noise, Large performance, Extended lifespan
Prompt Shipping and delivery: 15 working days right after payment
Small Orders Approved
2) Principal Products
-
Precision reduction gearbox and its diameter:3.4mm-38mm,voltage:1.5-24V,electricity: .01-40W,output speed:5-2000rpm and output torque:1. gf.cm -50kgf.cm,
- Customized worm and equipment transmission equipment
- Precise electromechanical motion module
- Precise element and assembly of plastic and steel powder injection.
Our Providers
- ODM & OEM
- Gearbox design and style and advancement
- Related technologies support
- Micro push gearbox custom answer
Packaging & Shipping
one) Packing Information
packed in nylon to start with, then carton, and then strengthened with picket situation for outer packing.
Or in accordance to client’s requirement.
2) Shipping and delivery Details
samples will be delivered within ten times
batch get top time according to the true predicament.
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 far more…
FAQ
FAQ
one. Can you make the gearbox with customized technical specs?
Yes. We have style and improvement staff, also a excellent phrase of engineers, every of them have
several function a long time encounter.
2.Do you offer the samples?
Of course. Our organization can supply the samples to you, and the shipping time is about 5-15days according to the specification of gearbox you need.
3.What is your MOQ?
Our MOQ is 2000pcs. But at the beginning of our enterprise, we acknowledge modest order.
4. Do you have the merchandise in stock?
I am sorry we donot have the item in inventory, All goods are made with orders.
five. Do you supply technology help?
Yes. Our company have layout and improvement crew, we can offer technological innovation help if you
require.
six.How to ship to us?
We will ship the items to you according to the DHL or UPS or FEDEX etc account you supply.
7.How to shell out the money?
We acknowledge T/T in advance. Also we have different lender account for receiving cash, like US dollors or RMB etc.
eight. How can I know the solution is appropriate for me?
Frist, you need to offer us the a lot more specifics details about the merchandise. We will advise the product to you in accordance to your need of specification. Soon after you affirm, we will put together the samples to you. also we will provide some good improvements according to your solution use.
nine. Can I appear to your company to check out?
Yes, you can arrive to our business to visit at whenever, and welcome to go to our business.
ten. How do contact us ?
Please send an inquiry
US $5-12 / Piece | |
3,000 Pieces (Min. Order) |
###
Application: | Universal, Industrial, Household Appliances, Car, Power Tools |
---|---|
Operating Speed: | Low Speed |
Excitation Mode: | Permanent Magnet |
Function: | Control |
Casing Protection: | Drip-Proof |
Number of Poles: | 4 |
###
Customization: |
Available
|
---|
###
motor specifications:8mm motor | |
motors (optional) | brushed motor,stepper motor |
voltage(optional) | 3-12v |
input speed | <=30000rpm |
current | 150mA max |
###
performance Data:8mm Planetary Gearbox Stepper Motor/Coreless Motor | |||||||
Model | Rated Speed | Max Speed | Max Rated Torque | Max Instant Torque | Reduction Ratio | Gearbox Length | Overall Length |
rpm | rpm | gf.cm | gf.cm | mm | mm | ||
ZWBPD008008-4 | 3111 | 4233 | 50 | 200 | 4 | 8.6 | 23.1 |
ZWBPD008008-5 | 2100 | 2857 | 50 | 200 | 5 | 8.6 | 23.1 |
ZWBPD008008-13 | 864 | 1122 | 100 | 300 | 13 | 11.3 | 25.8 |
ZWBPD008008-19 | 583 | 758 | 100 | 300 | 19 | 11.3 | 25.8 |
ZWBPD008008-28 | 394 | 511 | 100 | 300 | 28 | 11.3 | 25.8 |
ZWBPD008008-47 | 240 | 306 | 200 | 600 | 47 | 14.0 | 28.5 |
ZWBPD008008-69 | 162 | 207 | 200 | 600 | 69 | 14.0 | 28.5 |
ZWBPD008008-102 | 109 | 140 | 200 | 600 | 102 | 14.0 | 28.5 |
ZWBPD008008-152 | 74 | 94 | 200 | 600 | 152 | 14.0 | 28.5 |
ZWBPD008008-168 | 67 | 84 | 300 | 900 | 168 | 16.7 | 31.2 |
ZWBPD008008-249 | 45 | 56 | 300 | 900 | 249 | 16.7 | 31.2 |
ZWBPD008008-369 | 30 | 38 | 300 | 900 | 369 | 16.7 | 31.2 |
ZWBPD008008-546 | 21 | 26 | 300 | 900 | 546 | 16.7 | 31.2 |
ZWBPD008008-809 | 14 | 17 | 300 | 900 | 809 | 16.7 | 31.2 |
* The above specifications are subject to change without prior notice. They are for reference only and can be customized as required. |
###
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 $5-12 / Piece | |
3,000 Pieces (Min. Order) |
###
Application: | Universal, Industrial, Household Appliances, Car, Power Tools |
---|---|
Operating Speed: | Low Speed |
Excitation Mode: | Permanent Magnet |
Function: | Control |
Casing Protection: | Drip-Proof |
Number of Poles: | 4 |
###
Customization: |
Available
|
---|
###
motor specifications:8mm motor | |
motors (optional) | brushed motor,stepper motor |
voltage(optional) | 3-12v |
input speed | <=30000rpm |
current | 150mA max |
###
performance Data:8mm Planetary Gearbox Stepper Motor/Coreless Motor | |||||||
Model | Rated Speed | Max Speed | Max Rated Torque | Max Instant Torque | Reduction Ratio | Gearbox Length | Overall Length |
rpm | rpm | gf.cm | gf.cm | mm | mm | ||
ZWBPD008008-4 | 3111 | 4233 | 50 | 200 | 4 | 8.6 | 23.1 |
ZWBPD008008-5 | 2100 | 2857 | 50 | 200 | 5 | 8.6 | 23.1 |
ZWBPD008008-13 | 864 | 1122 | 100 | 300 | 13 | 11.3 | 25.8 |
ZWBPD008008-19 | 583 | 758 | 100 | 300 | 19 | 11.3 | 25.8 |
ZWBPD008008-28 | 394 | 511 | 100 | 300 | 28 | 11.3 | 25.8 |
ZWBPD008008-47 | 240 | 306 | 200 | 600 | 47 | 14.0 | 28.5 |
ZWBPD008008-69 | 162 | 207 | 200 | 600 | 69 | 14.0 | 28.5 |
ZWBPD008008-102 | 109 | 140 | 200 | 600 | 102 | 14.0 | 28.5 |
ZWBPD008008-152 | 74 | 94 | 200 | 600 | 152 | 14.0 | 28.5 |
ZWBPD008008-168 | 67 | 84 | 300 | 900 | 168 | 16.7 | 31.2 |
ZWBPD008008-249 | 45 | 56 | 300 | 900 | 249 | 16.7 | 31.2 |
ZWBPD008008-369 | 30 | 38 | 300 | 900 | 369 | 16.7 | 31.2 |
ZWBPD008008-546 | 21 | 26 | 300 | 900 | 546 | 16.7 | 31.2 |
ZWBPD008008-809 | 14 | 17 | 300 | 900 | 809 | 16.7 | 31.2 |
* The above specifications are subject to change without prior notice. They are for reference only and can be customized as required. |
###
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. |
How to Assemble a Planetary Motor
A Planetary Motor uses multiple planetary surfaces to produce torque and rotational speed. The planetary system allows for a wide range of gear reductions. Planetary systems are particularly effective in applications where higher torques and torque density are needed. As such, they are a popular choice for electric vehicles and other applications where high-speed mobility is required. Nevertheless, there are many benefits associated with using a planetary motor. Read on to learn more about these motors.
VPLite
If you’re looking to replace the original VP, the VPLite has a similar output shaft as the original. This means that you can mix and match your original gear sets, including the input and output shafts. You can even mix metal inputs with plastic outputs. Moreover, if you decide to replace the gearbox, you can easily disassemble the entire unit and replace it with a new one without losing any output torque.
Compared to a planetary motor, a spur gear motor uses fewer gears and is therefore cheaper to produce. However, the latter isn’t suitable for high-torque applications. The torque produced by a planetary gearmotor is evenly distributed, which makes it ideal for applications that require higher torque. However, you may have to compromise on the torque output if you’re looking for a lightweight option.
The VersaPlanetary Lite gearbox replaces the aluminum ring gear with a 30% glass-filled nylon gear. This gearbox is available in two sizes, which means you can mix and match parts to get a better gear ratio. The VPLite gearbox also has a female 5mm hex output shaft. You can mix and match different gearboxes and planetary gearboxes for maximum efficiency.
VersaPlanetary
The VersaPlanetary is a highly versatile planetary motor that can be mounted in a variety of ways. Its unique design includes a removable shaft coupler system that makes it simple to swap out the motor with another. This planetary motor mounts in any position where a CIM motor mounts. Here’s how to assemble the motor. First, remove the hex output shaft from the VersaPlanetary output stage. Its single ring clip holds it in place. You can use a drill press to drill a hole into the output shaft.
After mounting the gearbox, you can then mount the motor. The mounting hardware included with the VersaPlanetary Planetary Motor comes with four 10-32 threaded holes on a two-inch bolt circle. You can use these holes to mount your VersaPlanetary on a CIM motor or a CIM-compatible motor. Once assembled, the VersaPlanetary gearbox has 72 different gear ratios.
The VersaPlanetary gearbox is interchangeable with regular planetary gearboxes. However, it does require additional parts. You can purchase a gearbox without the motor but you’ll need a pinion. The pinion attaches to the shaft of the motor. The gearbox is very sturdy and durable, so you won’t have to worry about it breaking or wearing out.
Self-centering planetary gears
A planetary motor is a simple mechanical device that rotates around a axis, with the planets moving around the shaft in a radial direction. The planets are positioned so that they mesh with both the sun gear and the output gears. The carrier 48 is flexibly connected to the drive shaft and can move depending on the forces exerted by the planet gears. In this way, the planets can always be in the optimal mesh with the output gears and sun gear.
The first step in developing a planetary gear motor is to identify the number of teeth in each planet. The number of teeth should be an integer. The tooth diameters of the planets should mesh with each other and the ring. Typically, the teeth of one planet must mesh with each other, but the spacing between them must be equal or greater than the other. This can be achieved by considering the tooth count of each planet, as well as the spacing between planets.
A second step is to align the planet gears with the output gears. In a planetary motor, self-centering planetary gears must be aligned with both input and output gears to provide maximum torque. For this to be possible, the planet gears must be connected with the output shaft and the input shaft. Similarly, the output shaft should also be able to align with the input gear.
Encoders
A planetary geared motor is a DC motor with a planetary gearbox. The motor can be used to drive heavy loads and has a ratio of 104:1. The shaft speed is 116rpm when it is unloaded. A planetary gearbox has a low backlash and is often used in applications that need high torque. Planetary Motor encoders can help you keep track of your robot’s position or speed.
They are also able to control motor position and speed with precision. Most of them feature high resolution. A 0.18-degree resolution encoder will give you a minimum of 2000 transitions per rotation between outputs A and B. The encoder is built to industrial standards and has a sturdy gearbox to avoid damage. The encoder’s robust design means it will not stall when the motor reaches its maximum speed.
There are many advantages to a planetary motor encoder. A high-quality one will not lose its position or speed even if it’s subject to shocks. A good quality planetary motor will also last a long time. Planetary motors are great for resale or for your own project. If you’re considering buying a planetary motor, consider this information. It’ll help you decide if a particular model is right for your needs.
Cost
There are several advantages of planetary motors. One of the biggest is their cost, but they can also be used in many different applications. They can be combined with a variety of gearboxes, and are ideal for various types of robots, laboratory automation, and production applications. Planetary gearboxes are available in many different materials, and plastic planetary gearboxes are an economical alternative. Plastic gearboxes reduce noise at higher speeds, and steel input stage gears are available for high torques. A modified lubrication system can help with difficult operating conditions.
In addition to being more durable, planetary motors are much more efficient. They use fewer gears, which lowers the overall cost of production. Depending on the application, a planetary motor can be used to move a heavy object, but is generally less expensive than its counterpart. It is a better choice for situations where the load is relatively low and the motor is not used frequently. If you need a very high torque output, a planetary motor may be the better option.
Planetary gear units are a good choice for applications requiring high precision, high dynamics, and high torque density. They can be designed and built using TwinCAT and TC Motion Designer, and are delivered as complete motor and gear unit assemblies. In a few simple steps, you can calculate the torque required and compare the costs of different planetary gear units. You can then choose the best model for your application. And because planetary gear units are so efficient, they are a great option for high-end industrial applications.
Applications
There are several different applications of the planetary motor. One such application is in motion control. Planetary gearboxes have many benefits, including high torque, low backlash, and torsional stiffness. They also have an extremely compact design, and can be used for a variety of applications, from rack and pinion drives to delta robotics. In many cases, they are less expensive to manufacture and use than other types of motors.
Another application for planetary gear units is in rotary tables. These machines require high precision and low backlash for their precise positioning. Planetary gears are also necessary for noise reduction, which is a common feature in rotary tables. High precision planetary gears can make the height adjustment of OP tables a breeze. And because they are extremely durable and require low noise, they are a great choice for this application. In this case, the planetary gear is matched with an AM8000 series servomotor, which gives a wide range of choices.
The planetary gear transmission is also widely used in helicopters, automobiles, and marine applications. It is more advanced than a countershaft drive, and is capable of higher torque to weight ratios. Other advantages include its compact design and reduced noise. A key concern in the development of this type of transmission is to minimize vibration. If the output of a planetary gear transmission system is loud, the vibration caused by this type of drive system may be too loud for comfort.
editor by czh 2022-12-24