Ahoihoi,
Considering, that all the forward push stemming from the propeller has to be distributed into the hull, I was wondering how that is done. From the mechanical POV, I always thought there must be some kind of axial bearing if there are significant longitudinal forces to handle. But I see lot's of launches having only the ball bearings or flange bearings.
So, all the axial thrust is caught by these radial engine bearings without any axial bearing?
Axial Thrust & Engine Bearings
-
- Full Steam Ahead
- Posts: 150
- Joined: Mon Oct 26, 2015 2:32 pm
- Boat Name: No Boat Yet
Axial Thrust & Engine Bearings
the arduino version steam engine indicator: https://app.box.com/s/b2i0z3gw6ny3rcfdet5xjg8ubrfu799i - app version coming soon
Excuse my occasional long response time. It's caused by the side effects from ptsd.
Excuse my occasional long response time. It's caused by the side effects from ptsd.
- TahoeSteam
- Full Steam Ahead
- Posts: 813
- Joined: Fri Mar 07, 2014 5:38 am
- Boat Name: Wayward Belle
- Location: South Lake Tahoe, CA, USA
- Contact:
Re: Axial Thrust & Engine Bearings
Some use purpose-built thrust bearings pre-manufactured like Dodge or others that are mounted to the hull, some have thrust bearings built into their engines. Some are the conventional collar type while others I've seen are opposing tapered roller bearings.
~Wesley Harcourt~
https://www.youtube.com/c/wesleyharcourtsteamandmore
https://www.youtube.com/c/wesleyharcourtsteamandmore
- barts
- Full Steam Ahead
- Posts: 1069
- Joined: Wed Nov 18, 2009 6:08 am
- Boat Name: Otter, Rainbow
- Location: Lopez Island, WA and sometimes Menlo Park, CA
- Contact:
Re: Axial Thrust & Engine Bearings
For our steam boats, rule of thumb is that a pillow block bearing will handle any thrust loads from a prop that fits on that diameter shaft.
Engines w/ journal bearings w/o integral thrust bearings (or pillow blocks ) should have a pillow or flange bearing to handle the thrust.
- Bart
Engines w/ journal bearings w/o integral thrust bearings (or pillow blocks ) should have a pillow or flange bearing to handle the thrust.
- Bart
-------
Bart Smaalders http://smaalders.net/barts Lopez Island, WA
Bart Smaalders http://smaalders.net/barts Lopez Island, WA
-
- Full Steam Ahead
- Posts: 150
- Joined: Mon Oct 26, 2015 2:32 pm
- Boat Name: No Boat Yet
Re: Axial Thrust & Engine Bearings
Ah, I see. Thanks.
the arduino version steam engine indicator: https://app.box.com/s/b2i0z3gw6ny3rcfdet5xjg8ubrfu799i - app version coming soon
Excuse my occasional long response time. It's caused by the side effects from ptsd.
Excuse my occasional long response time. It's caused by the side effects from ptsd.