Check out McMaster-Carr, if they don't have it you probably don't need it.

I'm not sure what type of bearings your pedal has, and you may have to take a few measurements, but you should be able to get exactly what you need.

https://www.mcmaster.com/standard-ball-and-roller-bearings

608 2RS,

608 ZZ,

They're used in roller blades&Skateboards,

2RS= 2X rubber seals,

Both end of the bearing,

Sheilded (2x metal sheilds on both ends).The rubber sealed version is better/far superior,

As it retains(holds) grease in better&quieter,

The sheilded bearings have a faster speed rating.

ANY bearing company/shop or hobby will carry/have them instock,

Ask for:FAG/SKF GERMAN made bearings,

As the chinese won't last as long/be as good!,

OR any of the USA made brands: ABC/BCA/FAFNIR/NDH/L&S/TIMKEN,

Or ***:Koyo/Nachi/Ntn,

Euro: GMN/FAG/INA/SKF/SNR,

Uk: Hoffman,/R&M/RHP.

The dimensions of:608 2RS/ZZ are: ID 8MMX 22MM ODX 7 W (width/thickness).

You ONLY need/require/want standard ball bearings NONE of the others,

As they're a waste of $ for your application,

I work in the bearing industry for over 40+yrs.