Hydraulic Excavator Arm School Project Kit

A digger arm that works the way the real one does. Boom, arm and bucket each move on their own syringe, so the learner ends up with three separate hydraulic circuits doing different jobs on the same machine.

What's included

• A jointed boom, arm and bucket
• Separate syringe circuits for each joint

What's not included

• Tools
• Glue
• Paint

Covers Mechanical Systems and Control in CAPS Technology, Grade 9, where hydraulics and pneumatics sit. More complex than the single-circuit kits, so allow more build time. The pivots have to stay free but not sloppy, and a long arm on a light base tips over fast if the learner doesn't think about reach and stability.