Sleeve Or Ball Bearing Case Fan

Between 25 60 c ball bearing fans lasted nearly twice as long as the sleeve bearing fans did.

Sleeve or ball bearing case fan.

A good quality sleeve bearing fan by prolimatech which has proper seals to keep the oil from vaporizing. In stock and ready to ship. When temperatures exceeded 70 c ball bearing fans ran for 45 000 hours while sleeve bearing fans became inoperable. Yet when the ambient temperatures were relatively low sleeve bearing fans lasted as long as ball bearing fans.

Both bearing systems create noise that can be very different in both frequency content and amplitude. Sleeve bearings work well when noise is a consideration and when the shaft load isn t high which is especially true in residential direct driven blower and condenser fan applications. This portion of our the basics of case fans guide covers the differences in case fan bearings sleeve vs. Ball bearings are the best choice when the motor is under greater shaft tension or when fan speed controllers are in place.

Good sleeve bearing fans can last up to 30 000 hours and even more in some cases at. Choose from our selection of oil embedded sleeve bearings dry running sleeve bearings oil embedded flanged sleeve bearings and more. When temperatures exceeded 70 c ball bearing fans ran for 45 000 hours while sleeve bearing fans became inoperable. The lifetime of a sleeve bearing fan is often shorter than that of a ball bearing fan however if the temperatures are low within the application then similar lifetime expectancy can be achieved.

So if the application generates low heat or has a short life span than a sleeve bearing fan can be considered. Yet when the ambient temperatures were relatively low sleeve bearing fans lasted as long as ball bearing fans. Ball bearings fluid hydro dynamic and we ll briefly touch on magnetic bearings. Introduction quite often in low flow electronic cooling fans for computers where the aerodynamic noise is low the predominant noise emitted by the fan is generated in the bearing system.

60º c ball bearing fans on average outlasted sleeve bearing fans by 50 percent. This indicates if the application must operate in high ambient temperatures engineers would prefer to use a fan with ball bearings.