4M KidzLabs Mega Hydraulic Arm: Engineering Powered by Water

The 4M KidzLabs Mega Hydraulic Arm is a build-it-yourself robotic arm that runs entirely on water pressure, with no batteries needed. Children construct the arm themselves, then use four precision controls to operate its movement and a working gripper to grasp and lift objects, seeing hydraulic engineering in action.

How It Helps

Children assemble the arm's mechanism and hydraulic system, then practise operating the four controls to manoeuvre the gripper and pick up different objects. Suitable for children aged 8 and over, the finished model reaches approximately 48cm in length and 28cm in height, making it an impressive centrepiece for a science project or home demonstration.

• Runs entirely on water pressure, with no batteries required
• Four precision controls allow accurate manipulation of the arm's movement
• Working gripper can grasp and lift a range of different objects
• Large finished model, reaching approximately 48cm in length and 28cm in height
• Demonstrates hydraulic engineering and fluid mechanics through hands-on control

Operating a genuine hydraulic mechanism gives children a direct, hands-on understanding of how fluid pressure can generate force and movement, making the underlying engineering easier to grasp than reading about it alone.

Whether built for a school science project or as a home engineering challenge, the Mega Hydraulic Arm offers an impressive, hands-on introduction to hydraulics and robotics.

• Water-powered hydraulic mechanism, requiring no batteries
• Four precision controls for accurate manipulation of the arm's movement
• Working gripper able to grasp and lift a range of objects
• Finished model measures approximately 48cm in length and 28cm in height
• Suitable for children aged 8 years and over
• Assembled kit footprint measures approximately 16.5cm (W) x 28.0cm (H) x 48.0cm (L)
• Brand: 4M, from the KidzLabs range
• Barcode: 4893156034274

• Powered entirely by water. No batteries are needed, giving a clear, eco-friendly demonstration of hydraulic power.
• Genuine precision control. Four controls let children accurately manoeuvre the arm and its gripper.
• An impressive finished size. At around 48cm long and 28cm high, it makes a striking centrepiece for a science project.
• Really grips and lifts. The working gripper can grasp and move a range of different objects.

Power and Batteries

The hydraulic arm is powered entirely by water pressure and does not require batteries.

Safety and Age Suitability

Suitable for children aged 8 years and over. Contains small parts. Adult supervision is recommended during assembly, and use near water should be supervised to avoid spills.

Delivery and Returns

Standard UK delivery applies. See our Delivery and Returns page for full details.

• What is the 4M KidzLabs Mega Hydraulic Arm?
  It is a build-it-yourself robotic arm powered entirely by water pressure, using four precision controls and a working gripper to grasp and lift objects.
• Does the arm need batteries?
  No, the Mega Hydraulic Arm runs entirely on water pressure and does not require batteries.
• How big is the finished model?
  The completed arm reaches approximately 48cm in length and 28cm in height, making it a substantial centrepiece for a science project or demonstration.
• What age is this kit suitable for?
  The kit is designed for children aged 8 years and over, reflecting the more advanced assembly and control system involved.
• How many controls does the arm have?
  The arm has four precision controls, allowing children to accurately manoeuvre its movement and operate the gripper.
• Is adult supervision needed to build and use the arm?
  Adult supervision is recommended, particularly for younger children, during assembly and when using the arm near water to avoid spills.
• Is this a good toy for learning about hydraulics?
  Yes, operating a genuine water-powered mechanism gives children a hands-on, visible way to understand how fluid pressure can generate force and movement.