score:6
Since no one answered today, I just checked it out. Actually, there are no lockers at Zürich, Hardbrücke station. But the main station is very close, only one station away. You can get there a locker for 24 hours for 5 franks. There are small lockers available for notebook cases or similar stuff and big lockers for suitcases.
Another station close to Zürich, Hardbrücke that has lockers is Zürich Oerlikon. But the choice is not that big as at the main station. The prices are similar.