Loud Motor on a Sta-Rite Pump

Got a Sta-Rite sprinkler pump which is extremely loud. I was wondering if the bearings can be bought separately instead of replacing the entire pump.
Model Code is D83HF-01. Motor# is C48L2EC11C3. I would appreciate a feedback.
Model Code is D83HF-01. Motor# is C48L2EC11C3. I would appreciate a feedback.