Every platform that leaves our warehouse runs a 48-hour cycle on the bench first. It is the least photogenic part of the business and the only part that reliably prevents angry phone calls three weeks later.
The four failures it caught last quarter
- A drifting encoder on a knee joint. Fine for the first six hours, 0.4 ° off by hour thirty. Invisible in a ten-minute acceptance test.
- A battery pack that sagged under load. Nominal voltage looked perfect at rest; under a 900 W climb it dropped enough to trigger a protective shutdown at 71 % indicated charge.
- A loose camera bracket. Vibrated out of alignment after roughly 12,000 gait cycles. Calibration held for a demo and lost it on day two.
- Two dead pixels in a depth sensor. Trivial, but they produced a permanent ghost obstacle 80 cm in front of the robot.
Why 48 hours and not 8
Most of what goes wrong in the first month is thermal or mechanical settling, and both are functions of cycle count, not wall-clock time. Two days is the shortest window in which a joint reaches its steady-state temperature and a bracket either holds or does not.
If a unit cannot survive two days of doing nothing interesting, it will not survive two weeks of doing something useful.
What you get with the crate
A one-page test record: serial number, cycle count, joint torque sweep, thermal log and the name of the engineer who signed it off. Nothing in it is proprietary. If a unit fails in the field, that page is the first thing we look at.