fat loss from bearings

[alequatt]

hello to everyone, I wanted to ask you what could be due to the fat spill from a bearing.
in my case the bearing is a radial to a crown of balls with double shielding steel (2z). It is cast on a pin so the inner ring is still and rotates the outside. the exit takes place near between the shield and the inner ring. with the fencing rs the exit did not happen. Obviously the loss happens when the bearing is in operation.

 

[wert]

hello to everyone, I wanted to ask you what could be due to the fat spill from a bearing.
in my case the bearing is a radial to a crown of balls with double shielding steel (2z). It is cast on a pin so the inner ring is still and rotates the outside. the exit takes place near between the shield and the inner ring. with the fencing rs the exit did not happen. Obviously the loss happens when the bearing is in operation.

simply because the shielded bearings are not ponds. I don't understand why, if you had ponds (2rs), then you went to the shields. . .

 

[alequatt]

simply because the shielded bearings are not ponds. I don't understand why, if you had ponds (2rs), then you went to the shields. . .

thanks, probably the passage was made for the high rotation speeds of the bearing. What happens then is that you heat fat the 2z can't contain it?

 

[wert]

thanks, probably the passage was made for the high rotation speeds of the bearing. What happens then is that you heat fat the 2z can't contain it?

Obviously yes. I do not know if you have problems due to friction of 2rs shielding seals; in this case you could try with the 2rs low friction.

 

[MassiVonWeizen]

a page that can help

La schermatura del cuscinetto: le differenze tra 2Z e 2RS - Cuscinetti e Componenti

La schermatura del cuscinetto rappresenta una delle principali caratteristiche in grado di influenzare le prestazioni del cuscinetto e la sua corretta integrazione all’interno dell’impianto nel quale andrà a operare. Ma

www.cuscinettiecomponenti.it

 

[meccanicamg]

if the 2z bearing that is shielded metal non-contact loses fat is because the load and/or rotation regimen are high and lead to a well higher exercise temperature than that for which they are designed.

 

[TETRASTORE]

loss of lubricant (fat) from a zz shielded bearing could be caused by:
- deformation due to impactis easily revealed with a simple visual control- elastic stressescheck whether in the application there are disalignments between the pin and the other organ connected or impacts during operation- abrasionthe function of the metal screen is to protect from dust; any presence of abrasive powders affect the functionality- corrosionpossible presence of fumes or corrosive substances or oxidants- high temperature (environment + operation)
a high temperature can be determined both by the type of operation (load + speed) and by the influence of the ambient temperature; this entails a fluidification of fat resulting in drawing- Non suited lubrificantwhen a grease is used with density characteristics and resistance to inadequate high temperatures- vibrationsvibrations can cause lubricant losses

However, if the replacement of the previous 2rs bearing has not been dictated by technical problems but only economic problems or availability, I confirm what has already been suggested to you: returns to the previous solution.
If, however, as I understand, the 2rs solution has created similar problems, I would say that it is the case of evaluating the application of a ceramic bearing which does not provide lubrication, resists to high temperatures and has high load capacity.

It certainly costs more than a normal bearing, but on the latter (in your case) you must also take into account the lack of production by machine and maintenance costs.

 

[stevie]

if the problem is the high operating temperature you could use the bearings with high temperature grease (skf gjn series)