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7-9 years old
Birthday gift
Programmable robots, Science Experiment Group, and DIY
byjarda scientific assembly experiment three-in-one STEM hydraulic mechanical arm
Regular price
$949.00
Sale price
$679.00
Discount28%
Details →
Skills Developed:
Fine motor skills
, Mathematical Logic
and Spatial geometry
- Three-in-one hydraulic robotic arm
- No batteries or motor required, powered by water
- Develop logical thinking skills and explore scientific principles
Sold 5 in
8 hours
15 people viewing
byjarda scientific assembly experiment three-in-one STEM hydraulic mechanical arm
Sale price
$679.00
Regular price
$949.00
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Exploring the Mysteries of Science: byjarda's 3-in-1 STEM Hydraulic Robotic Arm—A Perfect Blend of Physical Dynamics and Engineering Aesthetics
In today's rapidly developing technological world, it is crucial to expose children to STEM (Science, Technology, Engineering, and Mathematics) education from a young age. This "Science Assembly Experiment 3-in-1 Hydraulic Robotic Arm" from byjarda is not just a toy, but a bridge to the physical world. Completely abandoning traditional batteries and motors, it utilizes purely hydraulic transmission principles , allowing children to personally experience the magic of Pascal's Law during hands-on assembly.
🔧 Assembly difficulty: High (5/5 — Extremely challenging, suitable for children aged 8 and up with adult supervision, allowing for in-depth parent-child learning time)
🌟 Key Product Features: No electricity required, powered by pure water
The biggest highlight of this robotic arm is its environmental friendliness and educational value . Through five precision levers at the back of the arm, children can manually apply pressure, converting liquid pressure into powerful mechanical energy. This intuitive control allows children to deeply understand the energy conversion process, far more effectively than simply watching instructional videos.
🛠️ Three-in-one function for flexible switching: meet all kinds of challenges
To increase the variety of ways to play, this robotic arm is designed with three interchangeable end effectors, allowing children to modify it according to different "task requirements":
- Gripper head: mimics human fingers to precisely grip small objects.
- Grab bucket chuck: Suitable for simulating excavation or handling of loose materials.
- Suction cup head: Utilizes atmospheric pressure to adhere to objects with flat surfaces (maximum load capacity approximately 100g).
📐 Six-axis joint design: flexibility comparable to industrial robots
This robotic arm boasts a high degree of freedom, capable of performing complex movements such as rotation, lifting, lowering, and bending. Below are its precise specifications for its range of motion:
| Joint area | Scope of activity/specifications |
|---|---|
| Base rotation | 270° wide-angle rotation |
| wrist rotation | 180° flip |
| Wrist exercises | 90° vertical swing |
| Elbow movement | 40° telescopic |
| Shoulder movement | 45° lifting |
| gripper width | Maximum 48 mm |
| Maximum load | Approximately 100 grams (g) |
🧠 Integrating international STEAM education concepts
This is not just a simple assembly exercise, but also a training in logical thinking. Children need to assemble hundreds of parts step by step, following detailed instructions (or referring to instructional videos). This effectively cultivates:
- Problem-solving skills: When faced with complex structures, learn how to debug and adjust them.
- Spatial imagination: Understanding the relationship between 3D structures and mechanical linkages.
- Focus and patience: A 5-star challenge, the best choice to hone your willpower.
📋 Product Specifications and Packaging Information
| project | Specifications/Quantity |
|---|---|
| Applicable age | Children aged 8 or older (parental accompaniment is recommended) |
| Main materials | Safe and environmentally friendly ABS plastic |
| Robotic arm base size | Approximately 28cm (excluding arm length) |
| Packaging box size | 40.5 x 10.5 x 30 cm |
| Contents | Assembly parts, hydraulic hoses, suction cups, stickers, instruction manual |
| Origin | China |
⚠️ Assembly tools required (you need to prepare them yourself)
To ensure a smooth assembly process and an aesthetically pleasing finished product, it is recommended to prepare the following tools. Please note that when removing parts, always use a cutting tool to avoid creating burrs that could cause mechanical jamming.
| Essential tools | Instructions for use |
|---|---|
| Diagonal pliers | Cut parts precisely to avoid burrs. |
| Phillips screwdriver | Screws for fixing mechanical structures |
| Scissors | Cutting hydraulic hoses |
| tissue | Remove excess water or lubricant. |
| markers | Marking part or hose length |
| Measuring tape or ruler | Measuring hose length |
| water cup | Water source required for hydraulic system injection |
Customer Notice and Disclaimer
- Product composition and specifications: All product composition, dimensions, weight and specifications are subject to the actual product. Product effects (such as intellectual development, stress relief, etc.) vary from person to person.
- Origin and Packaging: This product may be "Made in China". The packaging or instruction manual may contain simplified Chinese. Please consider this before purchasing.
- Dimensional tolerances: Since all dimensions are measured manually, there may be a small reasonable tolerance (+/- 1-3cm), and there may be minor errors. Please refer to the actual product.
- Color difference notice: All pictures are taken from real objects. Due to differences in shooting light, monitor resolution and individual understanding of color, there may be slight color differences from the actual product. Please refer to the actual product.
- Safety Warning: This product may contain small parts and is not suitable for children under 3 years old. Please use under adult supervision.
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Premium Gift Wrapping & Card Writing
Premium Gift Wrapping Service
Special gifts deserve exquisite packaging services.
We provide a full range of toy gift wrapping services, adding a beautiful touch and a handwritten card to your carefully selected STEM toys.
Warm wishes, beautifully presented. Make important moments full of smiles and make children even happier!
Exquisite Gift Wrapping
Using high-quality wrapping paper and ribbons, wrapped by hand to make the unboxing moment full of ritual.
Handwritten Greeting Card
We write your blessings for you, turning warm wishes into words delivered with the gift.
Billing for Multiple Items Instruction
This service is charged per 'toy item count'. Please add the quantity corresponding to the number of items you need wrapped.
We will provide individual packaging for each selected toy.
💡 Example: If you buy 3 toys and need all of them wrapped, please set the quantity to 3.
Shipping Policy & Delivery Info
Shipping & Delivery
Shipping Fees & Free Shipping
- Enjoy Free Delivery on orders over $400.
- Free shipping coverage: Single delivery location, including residential/commercial addresses, SF Stores, and EF Lockers.
- For orders under $400, a shipping & handling fee of $60 will be charged.
- SF Express Network:
Remote Area Surcharge
- An extra $10 fee applies to the following areas:
Sai Kung, Clear Water Bay, Shek O, Stanley, Discovery Bay, Ma Wan, Cheung Chau, Lamma Island, Peng Chau, South Lantau (including Tai O, Tong Fuk, Cheung Sha, Mui Wo, Pui O, etc.).
- Other remote area service & surcharge details: Click here for details.
- Note: Additional service fees may apply for remote areas. Please refer to SF Remote Area Table.
Delivery Time & Schedule
- General Delivery Service: Mon-Fri only (Hong Kong).
- Processing Time: 2-4 days after ordering.
(Cut-off time: Mon-Fri 16:00) - Transit Time: Approx. 5-7 days via courier.
- Actual delivery time depends on stock availability. Incorrect information may delay delivery.
Delivery Scope & Addresses
- Each order can only be delivered to one address. Please place separate orders for multiple locations.
- PO Boxes are not accepted as delivery addresses.
- No Delivery: Outlying Islands (except Airport, Ma Wan, Discovery Bay, and Tung Chung) and any restricted areas.
- Please contact Kidrise immediately if you need to change the address.
Tracking & Receipt
- We will provide a Tracking No. after the item is dispatched.
- To change the address after dispatch, please contact the courier directly. Extra fees are borne by the customer.
- Orders may be cancelled without refund if delivery fails multiple times due to personal reasons.
- Door-to-door delivery does not include moving items inside the residence. Kidrise is not responsible for any damage during moving.
Severe Weather Arrangements
- Delivery will be suspended when Typhoon Signal No. 8 or higher, or Red/Black Rainstorm Warnings are hoisted.
- Delivery will also be suspended if weather conditions are deemed unsafe by the courier.
- Kidrise will contact you to reschedule the delivery.
Educational STEM Toy Birthday Gift Guide
Struggling to find the perfect birthday gift? Kidrise has selected a variety of popular birthday gifts for children!
We feature Montessori toys for ages 0-3, as well as STEM toys for ages 3+,
covering the four major fields of Science, Technology, Engineering, and Mathematics.
Combined with our exclusive discounts, let's make it a memorable birthday for your little one!
How to Choose Age-Appropriate Toys?
Struggling to find the right toy or birthday gift? Kidrise has the perfect guide for you!
Toys are essential partners for children to learn while playing. Regardless of the type, they hold educational value.
However, choosing toys that do not match a child's age may lead to disinterest or safety concerns.
Kidrise Expert Advice:
Match the child's developmental age (intelligence, motor skills, and physical ability). Choosing 'slightly challenging' toys can better stimulate a child's potential.
Match the child's developmental age (intelligence, motor skills, and physical ability). Choosing 'slightly challenging' toys can better stimulate a child's potential.
Toy Age Guide & Categories
0-3 Yrs
Early Learning & Montessori
View Collection3-6 Yrs
STEM Educational Toys
View Collection6-11 Yrs
STEM Science Experiments
View Collection11+ Yrs
Advanced STEM Logic Toys
View CollectionReturn & Exchange Policy
Returns & Exchanges
Non-Exchangeable Items
- Bought by mistake / Changed mind after delivery.
- Product damaged by human error.
- Product has been opened or used (e.g., plastic wrap or box seal removed).
- Packaging is damaged, destroyed, or incomplete.
- Color difference due to lighting or screen settings (actual product prevails).
- Loss or damage caused by instructing courier to leave at door/management office.
Cancellation & Handling Fees
For order cancellations and refunds after payment, the following handling fees will be deducted:
Credit Card / AlipayHK / WeChat Pay
Deduct 5% or $30 (whichever is higher)
PayMe / Octopus / FPS / Bank Transfer
Deduct 3% or $20 (whichever is higher)
* We do not offer refunds without cause and reserve the right to refuse unreasonable requests.
Contact for Returns
Please prepare your order number and receipt, then contact us:
📞 Hotline: +852 6672 1884
📧 Email: contact@kidrise.com.hk
* If the item or quantity does not match the order, please contact us immediately on the day of delivery.
Return Rules & Process
- Timing: For quality issues, request an exchange within 7 days of receipt. Late requests will not be accepted.
- Return Deadline: Return the item to the service center within 3 days after the request.
- Proof: Must present the order number and original valid receipt.
- Limit: Only one exchange per order is allowed.
- Completeness: If operation is affected, return with full packaging and accessories; if only part is affected, only that part will be replaced.
- Shipping Fee: All shipping costs incurred for returns/exchanges are borne by the customer.
- Processing Time: Returns take 1-3 weeks (from the date of receipt).
- Refund Method: Refunds will be made to the original payment method (e.g., credit card), subject to bank processing time.
- Disclaimer: Kidrise is not responsible for damage after delivery. We are not liable for delivery failure/delay due to incorrect customer data.
- Returns due to size mismatch or change of mind are not accepted.
Other Terms
- We reserve the right to refuse any unreasonable return or exchange requests.
- Kidrise reserves the right to amend these terms without prior notice.
- In case of any dispute, Kidrise reserves the right of final decision.
Reminder:
Please read the product description and dimensions carefully before purchasing. Feel free to contact CS if you have questions.
Please read the product description and dimensions carefully before purchasing. Feel free to contact CS if you have questions.