Bottom bracket needing repacement more often in a single speed bike I used to live in quite a hilly area but managed well with a single speed Mango aluminium bike on most of these hills. I wanted to know if it is possible that due to extra pressure being exerted on the pedals and therefore on the crank and bottom bracket system, the bottom bracket might need replacing more often than a bottom bracket in a bike with multiple gears? I feel like I do damage to my bottom bracket way more quickly than I should. Perhaps the bottom brackets I have had were of low quality? I don't currently know what of bottom bracket I have installed.
In general what factors are involved in the usual degradation of the bottom bracket?
It is inevitable than with more radial load, bearings will have lesser lifespan. The only alleviation to this is to get good quality bearings.
If you notice a decrease in your bearings' lifespan, check if you've fitted your bottom bracket properly and specc'd everything to more or less proper torques indicated. If bearings fail regardless, there may be misalignment either on your bottom bracket unit or the BB shell itself. (more likely the latter)
Due to the larger forces inputted, the misalignment's effect of degradation is aggravated.
@juhist 's option for outboard-bearing bottom brackets only serves as a non-direct solution and masks any genuine issue the drivetrain has.