---
product_id: 132997932
title: "“Hydrobot Arm Kit”, Hydraulic Kit, STEM Building Toy for Kids 12+"
brand: "elenco"
price: "€ 73.50"
currency: EUR
in_stock: true
reviews_count: 13
category: "Elenco"
url: https://www.desertcart.ie/products/132997932-hydrobot-arm-kit-hydraulic-kit-stem-building-toy-for-kids
store_origin: IE
region: Ireland
---

# Hydraulic power, no batteries 270° base rotation 6-axis robotic arm control “Hydrobot Arm Kit”, Hydraulic Kit, STEM Building Toy for Kids 12+

**Brand:** elenco
**Price:** € 73.50
**Availability:** ✅ In Stock

## Summary

> 💧 Build, control, and conquer the future of robotics—no batteries required!

## Quick Answers

- **What is this?** “Hydrobot Arm Kit”, Hydraulic Kit, STEM Building Toy for Kids 12+ by elenco
- **How much does it cost?** € 73.50 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.ie](https://www.desertcart.ie/products/132997932-hydrobot-arm-kit-hydraulic-kit-stem-building-toy-for-kids)

## Best For

- elenco enthusiasts

## Why This Product

- Trusted elenco brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Immersive Build Experience:** Engage in a detailed, step-by-step project that challenges and rewards future engineers.
- • **Hydraulic Mastery in Action:** Harness water power for smooth, battery-free robotic movement.
- • **Precision Multi-Axis Control:** Experience 6-axis rotation including 270° base swivel for lifelike arm articulation.
- • **Interactive Gripper & Suction:** Open, close, and swap grippers to pick up objects up to 50g with fine lever control.
- • **STEM Learning Beyond Robotics:** Build critical thinking, problem-solving, and engineering skills through hands-on assembly.

## Overview

The Teach Tech Hydrobot Arm Kit is a sophisticated STEM building toy designed for kids 12 and up, powered entirely by hydraulics using water—eliminating the need for batteries. Featuring a 6-axis robotic arm with up to 270° base rotation and interchangeable grippers, it offers a hands-on engineering experience that develops mechanical skills, problem-solving, and analytical thinking. With detailed instructions and a challenging assembly process, this kit is perfect for aspiring engineers eager to master real-world robotics fundamentals.

## Description

"Young engineers will be delighted with the new HydroBot Arm Kit. It is powered by water, so no motor needed! They can use the levers and the power of hydraulics to move the multi-axis arm. The lever controllers have a special braking system that helps to achieve fine, accurate tasks. The gripper can open and close with a maximum 47mm (1. 89 in. ) gap, wrist joint rotation of 180deg. , wrist joint mobility of 98deg. , elbow joint range of 44deg. , base rotation of 270deg. , and shoulder joint motion of 45deg. , with a vertical reach of 16. 35in. , horizontal reach of 12. 42in. , and 50g lifting capacity. Grippers can be removed and replaced with suction components to pick up objects with smooth surface areas of no greater than 50g (1. 75 oz. ). The clear, animated instructions make the assembly and operation of this STEM robot easy to understand. Best suited for Future Engineers 12 and up. Elenco Teach products are based on STEM activities (Science, Technology, Engineering, Math) to teach and encourage kids in their development, all while having fun! All Teach Tech Green-Energy robots are powered by either water, wind, or sun, so there are no batteries required. Perfect for future engineers ages 12+. "

Review: Super cool hydraulics learner kit - but be ready for a lot of assembly. - My 9 y/o son who has a robotics fascination needed to understand the principles of hydraulic actuation before we got into pumps, valves and accumulators. This was the perfect starter kit. A word of warning—this is not really a kit for novices. The systems won’t work really well unless you are diligent in following the instructions to bleed each of the cylinders and water lines. It’s a lot of tedious assembly work for a younger kid that should be overseen by someone with at least a little mechanical aptitude. But for the price it is a fantastic teaching tool and precision toy.
Review: Challenge to assemble but valuable to teach/learn - With some engineering background, we put it together successfully right away. It took several hours to assemble and I will admit, getting the hydraulics loaded correctly is a bit of a challenge for any 12-year-old without adult supervision. Even then, I could see a lot of folks being overwhelmed by the challenge of not only assembly, piece by piece, with no room for error, to the water-loading hydraulic portion of the assembly. Set aside plenty of uninterrupted time, "roughly" first 40 pages are robot assembly, second 40 pages are hydraulics/pumps/tubing. If you're looking to get your kids interested in robotics, STEM/STEAM, or engineering/manufacturing this is a relatively inexpensive introduction to test the staying power of this low-level technology and their interest. It will also test your patience. Although we've played with it enough now that it's already showing signs of wear and the parts/levers are getting loose. Overall, great introductory toy to robotics!

## Features

- BUILD WORKING ROBOTS: Teach your kids mechanical engineering in a way they can't resist! Designed for kids 12+, this kit will guide your learner through the process of building real, working robots - taught in a way that they'll understand!
- POWERED BY WATER: Use the power of hydraulics to harness and control the Hydrobot! The arm includes 6 different axes and can rotate up to 270 degrees - no batteries required
- MOVES, ROTATES & GRABS: Use the levers to control the gripper which can open and close or be replaced with suction components to pick up objects
- NOT JUST ROBOTICS: With our Teach Tech Kits, the learning doesn't just stop at robotics. Teach Tech instructions are specifically designed to develop problem solving skills, analytical thinking and curiosity in young minds
- Hands-on Building: This is an in-depth STEM building project, not a pre-assembled toy. Follow the detailed step-by-step assembly instructions, take time to ensure proper assembly, and enjoy a true STEM experience. Expect multiple hours of build time.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B07NVFGH2X |
| Best Sellers Rank | #32,941 in Toys & Games ( See Top 100 in Toys & Games ) #356 in Educational Science Kits |
| Customer Reviews | 4.5 4.5 out of 5 stars (1,561) |
| Item Weight | 2.75 pounds |
| Item model number | TTR-632 |
| Manufacturer | OWI Inc |
| Manufacturer recommended age | 12 years and up |
| Product Dimensions | 15.6 x 11.4 x 4.1 inches |
| Release date | May 20, 2019 |

## Images

![“Hydrobot Arm Kit”, Hydraulic Kit, STEM Building Toy for Kids 12+ - Image 1](https://m.media-amazon.com/images/I/71ncvs3cT9L.jpg)

## Questions & Answers

**Q: Is there a way to get replacement parts? My child is really enjoying building this robotic arm, unfortunately some of the tiny parts are lost**
A: Horrible customer service  with the  company, don't offer replacement or replacement parts. Told us to use zip ties to hold it together. Biggest waste of money and a piece of junk. Wouldn't recommend

**Q: Why are there two different prices for this product? One is $37 and the other is $59... I don't see a difference in either product. Please help!**
A: The product is being sold from two different vendors. Teach Tech is our brand.

**Q: How many pieces**
A: Thank you for your inquiry. There are more than 230 parts in this kit. I hope this helps!

**Q: Arm not working , my son build the arm but the front part or the claw does not pick up stuff**
A: hi its actually for me a con. my son is 12. very difficult to assembly and its not a robot! if the arm doesn't work its a pain. it means there is air in the tube so he has to desassumble it, get rid of the air using 2 water sources for each end of the tube and then reassembly it.  as i said we were very dissapointed with the product. however its very educative in terms of engineering!

## Customer Reviews

### ⭐⭐⭐⭐⭐ Super cool hydraulics learner kit - but be ready for a lot of assembly.
*by W***T on August 28, 2025*

My 9 y/o son who has a robotics fascination needed to understand the principles of hydraulic actuation before we got into pumps, valves and accumulators. This was the perfect starter kit. A word of warning—this is not really a kit for novices. The systems won’t work really well unless you are diligent in following the instructions to bleed each of the cylinders and water lines. It’s a lot of tedious assembly work for a younger kid that should be overseen by someone with at least a little mechanical aptitude. But for the price it is a fantastic teaching tool and precision toy.

### ⭐⭐⭐⭐⭐ Challenge to assemble but valuable to teach/learn
*by 0***Y on December 27, 2024*

With some engineering background, we put it together successfully right away. It took several hours to assemble and I will admit, getting the hydraulics loaded correctly is a bit of a challenge for any 12-year-old without adult supervision. Even then, I could see a lot of folks being overwhelmed by the challenge of not only assembly, piece by piece, with no room for error, to the water-loading hydraulic portion of the assembly. Set aside plenty of uninterrupted time, "roughly" first 40 pages are robot assembly, second 40 pages are hydraulics/pumps/tubing. If you're looking to get your kids interested in robotics, STEM/STEAM, or engineering/manufacturing this is a relatively inexpensive introduction to test the staying power of this low-level technology and their interest. It will also test your patience. Although we've played with it enough now that it's already showing signs of wear and the parts/levers are getting loose. Overall, great introductory toy to robotics!

### ⭐⭐⭐⭐ Good quality parts and instructions, too many small parts.
*by T***E on October 20, 2025*

Very well made small precision parts. The instructions are very clear and well done. Don't plan on finishing this in one sitting.

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*Product available on Desertcart Ireland*
*Store origin: IE*
*Last updated: 2026-03-08*