bearings

  When selecting bearings for any purpose, ultimately you want to be certain of achieving the required level of equipment performance – and at the lowest possible cost. Robustness also is very important because the conditions in which your equipment is assembled, operated and maintained may not be precisely known and may, in fact, vary over time. In addition to the bearing rating life, there are key factors you must consider when putting together the bearing specifications for an application, including: Lubricant and supply method Shaft and housing fits Bearing clearance class Cage material and guidance Dimensional stability Precision requirements Bearing sealing Mounting method and maintenance To help evaluate these key factors, we recommend following this selection process: Each icon represents a step in the process. Performance requirements and operating conditions Bearing type and arrangement Bearing size Lubrication Operating temperature and speed Bearing interfaces Bearing ex...

  Lubricating greases slowly degrade and therefore have a limited life. Rolling bearings have to be relubricated if: The grease life is shorter than the specified bearing life. The grease becomes contaminated. Grease life depends mainly on: Bearing type and size Grease type Speed Load ratio C/P Operating temperature Relubrication should occur frequently enough to avoid grease deterioration having an adverse effect on the bearing life. Therefore, the SKF relubrication interval, t f , is defined as the time at the end of which there is only a 1% probability that the bearing will fail because of grease degradation. This represents the L 1  grease life. To compare grease life with the specified bearing life, you can use the L 10  grease life, which represents a 10% probability failure because of grease degradation. You can find information about the grease life of sealed bearings in the relevant product sections. The L 10  grease life can also be estimated by multiplying...

  A fluid bearing  uses a thin film of liquid or gas to support a load between two surfaces, eliminating direct contact and friction to allow for low friction, high loads, and long lifespans .  There are two main types:  hydrodynamic bearings ,  which use the relative motion of the surfaces to pressurize the fluid film, and  hydrostatic bearings ,  which use an external pump to pressurize the fluid.  They are often used in high-speed or high-precision applications, such as in computer cooling fans, where standard ball bearings would have a shorter life.    You can watch this video to learn how fluid bearings work: ypes of fluid bearings Hydrodynamic bearings:   These are self-acting bearings that rely on the rotation of the shaft to create pressure.  The relative motion of the surfaces drags the fluid into a wedge-shaped gap, generating pressure to support the load.   Hydrostatic bearings:   These bearings use an exte...

  Miniature are characterized by their compact size, lightweight construction, high speed capability, and high precision. They are typically made of metal, and consist of rolling elements (usually steel balls or cylindrical rollers) along with outer and inner rings. These rolling elements are distributed between the inner and outer rings to minimize friction while providing support and positioning. The geometric shape and precision of the rolling elements and ring components are crucial for ensuring proper functioning of miniature bearings. The dimensions of  miniature bearings  are typically expressed in metric units, such as inner diameter, outer diameter, and width. Common sizes include 3mm, 4mm, 5mm, and so on. Furthermore, miniature bearings can be further classified based on their structural forms, such as , angular contact ball bearings, , and more Miniature ball bearings are available in  different types and in different designs  to meet t...