propeller shaft strut bearing question

[jennyo]

what is the maximum clearance allowed between prop shaft
and strut bearing before vibration problems occur.


thanks for any help

jennyo

 

[steelespike]

Re: propeller shaft strut bearing question

I have had several inboards over 40+ years of boating I've never had any vibration problems from a strut bearing and never checked clearance.Boats ranged from yard wrecks rescued from the scrapper to a 70 year old relatively low hour boat.
If you suspect a bearing related vibration I would suggest a new bearing.
These were older styled boats with a max rpm of about 3,500. I would eliminate shaft runout and any prop defects before a bearing replacement,unless there is noticeable shaft movement within the bearing.