What is Tapered land thrust bearing?

[Martin Skkinner]

I came across the word Tapered land Thrust bearing while reading about Babbitt bearing manufacturing. Can anyone help me with a layman's definition? How is it different from tilting pad?

 

[anorlunda]

I think you should ask the Pioneer thrust bearing company. They are the ones who wrote that term.

 

[Ranger Mike]

depending on your axial and radial load demands, the taper roller bearing developed by Timken in Canton, Ohio years ago was a very good compromise.
understanding taper bearings pdf below is good primer for it.

http://www.alfatekrolamentos.com.br/Catalogos/USA_chap_1.pdf

 

[Nidum]

A tapered land thrust bearing is a hydrodynamic bearing resembling a plain multi pad thrust bearing but with the thrust pads sloped off slightly .

The sloping off allows controlled geometry hydrodynamic wedges to form at each pad thus improving the load carrying capacity compared to a plain pad version of the same nominal size . Also gives improved vibration damping characteristics .

Most commonly used in one direction of rotation situations . Bi-directional ones can be made but load carrying capacity is then compromised a little .

They work particularly well in moderate load / high speed applications such as turbines .

 

[Martin Skkinner]

A tapered land thrust bearing is a hydrodynamic bearing resembling a plain multi pad thrust bearing but with the thrust pads sloped off slightly .

The sloping off allows controlled geometry hydrodynamic wedges to form at each pad thus improving the load carrying capacity compared to a plain pad version of the same nominal size . Also gives improved vibration damping characteristics .

Most commonly used in one direction of rotation situations . Bi-directional ones can be made but load carrying capacity is then compromised a little .

They work particularly well in moderate load / high speed applications such as turbines .

Thanks a lot :)

 

[Baluncore]

Invented in 1904/5 to better apply the principle of the oil-wedge to thrust bearings. They were in wide use by 1914 to carry propeller shaft thrust in the biggest ships where they allowed significantly greater power and improved economy.
https://en.wikipedia.org/wiki/Thrust_block#Improved_Michell_thrust_blocks
https://en.wikipedia.org/wiki/Fluid_bearing#Michell.2FKingsbury_tilting-pad_fluid_bearings