Target speed had a hard upper limit, set by a mechanical stop.

According to the developers, there was a hard limit of 4,400 players in version 2.5.

A hard limit is something that must not be done.

Violating a hard limit is often considered just cause for ending a scene or even a relationship.

Unions - not government - would establish hard limits on the powerful.

In the end, the need for spatial resolution pushed the problem up against some hard limits.

Finally, there is the issue of a hard upper limit.

My family never put any hard limits on playing video games.

It places so-called hard limits on its pilots to protect them from themselves.

But, there's no hard limit to the number of devices.