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bearing inclination

bearing inclination

bearing inclination

I am currently building a rotating machine with a shaft that's 1.500mm long (aprox. 5ft), with a diameter of 280mm.
It has a 10º inclination.
Due to the vibaration of the machine, I chose the SNL3156 housing and the 23156 bearing to support vibration, rotation, and the inclination of the structure.
Can anyone please tell me that this is the right choice? Or if there is a better one?
Thank you.

RE: bearing inclination

10º inclination from what? Horizontal or vertical?
You mentioned the bearing model numbers but left out the brand name.
I would suggest you contact an application engineer at the bearing manufacturer for your question.

RE: bearing inclination

Figure out what the axial load will be when the machine is running, and compare it to the manufacturer's ratings for permissible axial loads on the bearing.

RE: bearing inclination

That part number looks to be a spherical bearing. They are good for both radial and axial loads. I'm guessing your 10 degrees is possibly a bearing misalignment angle? SKF has some good design info for spherical bearings but I don't see anything on their web site for misalignment specs:


RE: bearing inclination

What about:
shaft speed (variable?)
Axial/thrust load
Radial load
Hollow shaft?
Drive coupling?
Vibration source (dynamic force and frequency)


RE: bearing inclination

That 23156 spherical roller bearing is only capable of an angular misalignment of around 2.5 degrees at most. If radial forces on the shaft bearings due to dynamic conditions is a concern, you might consider a bearing configuration that has minimal installed radial clearance. Spherical roller bearings typically have a fair amount of radial internal clearance, and don't like being subjected to radial loads that vary WRT a fixed outer race.

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