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Teach Tech

Teach Tech “Hydrobot Arm Kit”, Hydraulic Kit, STEM Building Toy for Kids 12+

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Availability: In Stock.
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Arrives Wednesday, Aug 26
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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.

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+. "

Brand Name: Teach Tech


Age Range Description: Kid


Educational Objective: Coding Skills, Problem Solving Skills, Programming Skills, STEM


Language: English


Subject: Physics


Set Name: Single Set


Manufacturer Maximum Age (MONTHS): 1296


Number of Packs: 1


Number of Items: 1


Unit Count: 1 Count


UPC: 756619012728


Manufacturer Minimum Age (MONTHS): 144


Global Trade Identification Number: 28


Included Components: Assembly Parts, Instruction Manual in English


Item Type Name: Elenco Teach Tech “HydroBot Arm Kit”, Hydraulic Robot Arm Kit, STEM Building Toy for Kids 12+


Model Number: TTR-632


Manufacturer: OWI Inc


Manufacturer Part Number: TTR-632


Manufacturer Warranty Description: 1 Year Warranty Against Manufacturer Defects


Theme: Cartoon


Material Type: Plastic


Size: Pack of 1


Item Dimensions: 15.6 x 11.4 x 4.1 inches


Item Weight: 2.8 pounds


Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Wednesday, Aug 26

Yes, absolutely! You may return this product for a full refund within 30 days of receiving it.

To initiate a return, please visit our Returns Center.

View our full returns policy here.

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Top Amazon Reviews

    • Challenge to assemble but valuable to teach/learn
Subject: Physics
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! ... show more
Reviewed in the United States on December 27, 2024 by 06CorvetteGuy
    • Hydrobot arm kit
Subject: Physics
This kit went to my 13 year old grandson in another state. He's a smart kid and leans toward science. He was excited to get it and a few days later he sent the video. Great summer project he had fun putting together, as well as a learning experience about hydraulics.
Reviewed in the United States on July 17, 2026 by Planted
    • A nice, if small, workable robot arm to show principles.
Subject: Physics
Review Image by Frank
Review Image by Frank
Review Image by Frank
Start to finish assembly took right at 8 hours, spread over 3 days. I am a moderately skilled senior citizen. This is no trivial assembly. The good news is that the instructions are very clear, and the parts generally fit together well. However, assembly requires *close attention* to the images/directions, which can wear you down if you try to do it in one sitting. I am tracking my hours to see how long the whole assembly takes, and will share those later. Some hints: 1. DON'T throw away the little envelope that says "don't eat this". I thought it was some kind of dessicant but it is oil essential to project. 2. You will need a *small* phillips screwdriver, with bit fits screw heads well, because some are tight. Lots of pressure and slow turning of screwdriver was necessary for many of the screws. 3. Put a new blade in your utility knife to trim off the innumerable tabs. Update - carefully cut items from matrix with knife to avoid separate removal of tabs 4. Be methodical, and careful with the **small** parts (and tiny screws). Put items in ziplok bags & containers as you go. No spare screws or springs are provided so DON'T LOSE any. (I'd have paid the extra $0.20 or whatever) 5. Filling the pneumatic system components with water was the most nerve-wracking - mainly because of the difficulty of eliminating water bubbles. I suggest getting a large container for water, big enough to submerge your hand and enable you to hold items upside down when filling. Move plungers multiple times to eliminate air from cylinders. 6. The filling instructions were a little confusing to me, but basically they want you to fill the cylinders BEFORE attaching hoses. They don't tell you explicitly but I think their procedure is designer to minimize bubbles in tubes that you fill with water. 7. Hoses are very slippery when wet and hard to push on all the way, but a BIG help was using a high-tech "wicking" sweat rag - the artificial fiber gave a good grip on tiny pipe. Also good for mopping up spills. 8. I tried to fill the little hoses by gravity flow before connecting to cylinders, rather than when they were dry. Little bubbles tend to form in dry pipe when first wetted. Maybe it helped a little. Oh, and yes, trying to correct big bubbles later, after complete assembly would be a nightmare - so do your best while filling initially. 9. Installing the levers and cylinders in the base unit is easiest to do from the bottom, rather than from top as they show. I was sure I was going to crack the plastic several times when pushing cylinder assembly ( the enc with spring) to lock under/into control lever. It is very tight but never broke. 10. The unit worked OK when finished - it won't replace a robot arm in a GM factory, but it is simple to use and will hopefully be entertaining to 4 year olds. Time will tell if it is durable enough for that age user. ... show more
Reviewed in the United States on October 30, 2020 by Frank
    • Super cool hydraulics learner kit - but be ready for a lot of assembly.
Subject: Physics
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. ... show more
Reviewed in the United States on August 28, 2025 by wreathandcrest
    • Great Christmas gift!
Subject: Physics
We got this as a Christmas gift for my engineering-minded kid. He LOVED putting it together and how intricate it was. Actually cutting the tubes and putting water in it to make it work was pretty cool. Highly recommend!
Reviewed in the United States on January 27, 2026 by John I.
    • Well engineered
Subject: Physics
The only downside is the black and white instructions, other than that it is clear how much attention to detail and meaningful iteration went into this.
Reviewed in the United States on February 3, 2026 by Christian M.
    • Fun build
Subject: Physics
This thing is pretty sweet. Saw it on sale so couldn't pass it up. My son and I put it together and he has played with it for hours.
Reviewed in the United States on December 30, 2025 by Tim
    • Absolute blast to assemble and experiment with
Subject: Physics
My son and I tag-teamed and assembled it in an afternoon, though it requires patience and a steady hand to clip the burs off all the plastic parts. What’s great is that you can tell whoever designed this knew what they were doing and didn’t cut any corners (like a lot of cheap science sets). It’s sturdy and the hydraulics work really well. There’s an hydraulic GLOVE kit that I recommend getting first, then follow up with this for a perfect combo. ... show more
Reviewed in the United States on August 24, 2024 by Ellas Dad

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