Ball bearing QJ series
cylindrical rollerfour-point contactangular-contact

ball bearing
ball bearing
ball bearing
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Rolling element
ball, cylindrical roller
radial, axial, angular-contact, four-point contact, single-row, double-row
Other characteristics
cage assembly, for heavy loads, with lubricant
Inside diameter

Min.: 17 mm (0.67 in)

Max.: 480 mm (18.9 in)

Outside diameter

Min.: 40 mm (1.57 in)

Max.: 870 mm (34.25 in)


Min.: 12 mm (0.472 in)

Max.: 170 mm (6.693 in)


Four-point contact ball bearings are radial single row angular contact ball bearings with raceways that are designed to support axial loads in both directions. For a given axial load, a limited radial load can also be supported (Load ratio). The bearings are separable, i.e. the outer ring with ball and cage assembly can be mounted separately from the two inner ring halves. Both inner ring halves of SKF Explorer four-point contact ball bearings have a recessed shoulder. This improves oil flow when the bearing is used in combination with an SKF cylindrical roller bearing (fig. 1). In addition, these recesses can be used to facilitate dismounting. Product details Designs and variants Bearing data Loads Temperature limits Permissible speed Design considerations Designation system Features and benefits Accommodates axial loads in both directions Less axial space These bearings take up considerably less axial space than double row bearings. High load carrying capacity A large number of balls are incorporated, giving the bearing its high load carrying capacity. Separable design The split inner ring leads to easier mounting and dismounting of the bearing.  Improved oil flow Limited inner ring deformation when subjected to high clamping forces


*Prices are pre-tax. They exclude delivery charges and customs duties and do not include additional charges for installation or activation options. Prices are indicative only and may vary by country, with changes to the cost of raw materials and exchange rates.