Two-way thrust angular contact ball bearings are usually associated with double-row cylindrical roller bearings .

 Two-way thrust angular contact ball bearings are usually associated with double-row cylindrical roller bearings used in combination. Both the same nominal diameter. Thus bearing aperture processing easier. Double-row angular contact thrust ball bearings of diameter tolerances to ensure the bearing is installed to the bearing in there are still some gaps.

Two-way thrust angular contact ball bearing contact angle of 60 ° and with axial preload. So it's very high axial load capacity and stiffness. This kind of bearing 2344 .. and 2347 ... two series. 2344 .. series installed in NN30 cylindrical roller bearings tapered bore smaller side, while the 2347 series .. installed in the larger side of the cone aperture.

 http://www.gwllb.com/product/443-two-way-thrust-angular-contact-ball-bearings--234000--series-5a55/

Two-way thrust angular contact ball bearings