3 in 1 Hydraulic Robot Arm Kit

Looking for a truly hands-on science kit? This STEAM Hydraulic Robot Arm lets you learn by doing. Assemble ~220 parts, connect the hydraulics, then operate the arm with base joysticks—no batteries, no motors, just water.

Who it’s for

• Ages 8+ and anyone who enjoys building and tangible physics (adult supervision recommended)

• Parent–child projects, classroom/club activities, science-fair demos

• Learners who want mechanics and physics they can see and feel

Highlights

• Pure hydraulic drive for visible, intuitive transmission of force

• 3-in-1 swappable heads: two-jaw gripper, four-jaw claw, suction cup

• Desktop control via base joysticks for smooth grabbing/suction

• Engineering build: ~220 parts that grow logic, patience, and making skills

• Battery-free for quiet, repeatable play and easy upkeep

What’s different

• Many arms rely on motors/batteries; this one focuses on hydraulics for more tangible mechanics.

• Three tool heads expand scenarios and challenge levels.

Easy ways to start

• Make it a weekend build: follow the manual to assemble and fill the lines, then bring it to life.

• Run desktop demos: pick up light items or use the suction cup on flat surfaces.

• Try timed challenges: grab–move–place routes to train focus and control.

Tips: Recommended object width ≤48 mm for gripper/claw; pick-up/adsorption ≤100 g (depends on material/surface).

Ships within 48 hours; delivery time depends on the carrier.

Product Info (Pro)

• Name/Type: STEAM Hydraulic Robot Arm (DIY build)

• Age: 8+ (adult supervision recommended)

• Drive: Hydraulic; no battery/motor required

• Tool Heads: Two-jaw gripper / Four-jaw claw / Suction cup (swappable)

• Control: Base joysticks linked to the hydraulic system

• Parts Count: ~220 (basic tools included: pliers, screwdriver, English manual)

• Accessories: All hydraulic tubing/fittings included (actual set per package)

• Material: ABS plastic

• Colors: Blue / Yellow (main colors)

• Size: Product approx. 46 × 26 × 30 cm; Box approx. 40.5 × 10.5 × 29.5 cm; Base side ~28 cm

• Capacity Guide: Gripper/claw width up to ~48 mm; pick-ups up to ~100 g

• Use Cases: Engineering starter, classroom/club, parent–child project, desktop demo

• Fulfillment & Service: Ships within 48 hours; transit time per logistics. DIY kits are non-returnable once opened for non-quality reasons; quality issues are supported per store policy.

• Notes: Follow the manual for correct hydraulic connection and tuning; avoid overweight items or uneven surfaces.