Ball-screw Joint — Design Breakdown
intermediateActuator Deep Dive
About this teardown
A bench-built linear actuator taken apart conceptually: the choices that let a hobby budget reach 60 Nm, and where it falls short of a production joint.
This mechanism in action
The teardown pairs with a demonstration of the same robot performing with this hardware.
Ball-screw Actuator Bench Test
Bill of materials
4 line items · 5 components total
| Part | Specification | Supplier | Qty |
|---|---|---|---|
| Ball screw + nut | Rolled, high lead | Generic industrial | 1 |
| Brushless motor | Outrunner, 6S rated | Generic industrial | 1 |
| Motor controller | ODrive | ODrive Robotics | 1 |
| Magnetic encoder | AS5047-class absolute | Generic industrial | 2 |