Spherical Roller Bearings SKF 23948 CC/W33

The SKF 23948 CC/W33 spherical roller bearing, with dimensions of 240 × 320 × 60 mm, provides a high-load-carrying bearing whilst simultaneously compensating for misalignment.

The SKF 23948 CC/W33 double-row self-aligning roller bearing has a bore diameter of 240 mm, an outer diameter of 320 mm and a width of 60 mm. As an open roller bearing made from standard bearing steel 100Cr6, the design accommodates high radial forces as well as combined axial loads. The bearing automatically compensates for static and dynamic misalignments or shaft deflection thanks to the spherical raceway in the outer ring. The integrated sheet steel cage guides the symmetrical rollers and ensures smooth running.

In which installation situations does the 23948 CC/W33 self-aligning roller bearing prove its worth?

Design engineers primarily use this self-aligning roller bearing on large-diameter shafts where angular misalignment occurs between the shaft and the housing. Typical applications include bearing arrangements subject to high loads and featuring long shafts where deflection is to be expected. The open design, combined with a temperature range of -30 to +200 degrees, enables use in thermally demanding environments. The lubrication groove with lubrication holes in the outer ring allows the lubricant to reach directly between the rolling elements.

What is the function of the W33 lubrication groove and tolerance class P5 in the 23948 CC/W33 self-aligning roller bearing?

The suffix W33 denotes an annular lubrication groove with lubrication holes in the outer ring, which facilitates relubrication whilst the bearing is installed. In addition to dimensional accuracy class PN, this bearing features increased running accuracy of class P5, which reduces radial runout during operation. When designing the bearing, the standard radial bearing clearance must be taken into account: the choice of fit and thermal expansion of the shaft influence the operating clearance. As there are no integrated seals, the surrounding housing provides protection against contamination.