Axial Internal Clearance / Preload
UL - Universal design for fitting in pairs, bearing pair has slight preload in O and X arrangements
Lubrication
Standard Lubrication
Data from Schaeffler (medias)
ECLASS number
23-05-08-03
ECLASS2 number
23-05-08-03
Suffix description
E25° Contact Angle
TTextile Laminated Phenolic Resin, Outer Ring Guided. The Cage Is Suitable For Long-Term Operation At Temperatures Up To 100°C
P4S-K5Combination Of P4S (Boundary Dimensions ISO 4, Abec-7, Running Accuracy ISO 2, Abec-9) And K5 (Same as P4S But With Mean Sorting Of Bore And Outside Diameter)
The HS71918-E-T-P4S-K5-UL FAG is a high-speed design spindle bearing. This bearing type without seals has small steel balls. The bearing has an internal design with optimised friction and the balls are subjected to very low centrifugal forces. Even at very high speeds, a high degree of rigidity is maintained. This makes the HS71918-E-T-P4S-K5-UL FAG particularly suitable for use in high-speed- or grinding spindles.
FAG spindle bearings are single-row, angular contact ball bearings that cannot be dismantled. They have solid inner and outer rings as well as ball-and-cage assemblies with solid window cages. Due to their extremely tight tolerances, they are particularly suitable for applications that require high guidance accuracy and suitability for high speeds. Spindle bearings are commonly used for main spindles in machine tools.
In addition, FAG spindle bearings are designed as universal bearings. Universal bearings with the same deviation in inner ring bore and outer diameter can be combined for use in different arrangements. For example, when the load capacity of a single bearing is insufficient, two matching bearings can be used in a tandem arrangement to support axial loads in one direction only. In order to support axial loads in both directions as well as moments, O or X arrangements are good solutions.
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