Cap Feeder Changeover specification should start with the real closure.
Changeover is often where a cap feeder becomes either a useful production tool or a daily bottleneck. Similar caps may share tooling, while larger changes can require new tracks, guides, bowls or chute parts.
For a better buying decision, the useful comparison is not only hopper size or headline speed. It is how the feeder behaves with your closure, how the capper receives the cap and how easy the line is to run after changeover.
The safest specification route is to start with real closures, target output, line photos and the exact point where the cap must be presented. That avoids choosing a feeder on a generic speed figure that does not match the cap or capper.