Stern Tube Diameter

Use this area to discuss general matters and issues relating to the Nicholson 31.
SailingCirce
Crew Member
Posts: 52
Joined: 23 May 2006, 22:33

Stern Tube Diameter

Postby SailingCirce » 16 Nov 2017, 01:12

I had a boatyard install a PSS dripless shaft seal a number of years ago. It is about the recommended time to change the bellows portion of the shaft seal. I need to know the outside diameter of the stern tube where the propellor shaft comes into the inside of the hull. I know that I have a 1 inch diameter shaft but don't know this other measurement that I need to know in order to buy a replacement bellows . These are my options from PSS:

Part # Shaft Diameter Stern Tube Diameter
07-100-114R 1" 1-1/4" to 1-3/8"
07-100-112R 1" 1-1/2" to 1-5/8"
07-100-134R 1" 1-3/4" to 1-7/8"
07-100-200R 1" 2" to 2-1/8"
07-100-214R 1" 2-1/4" to 2-3/8"
07-100-212R 1" 2-1/2" to 2-5/8"