NTN Bearing Brazilian Bearings Ltda. 6234 Bearing 2D drawings and 3D CAD models 170 mm x 310 mm x 52 mm NSK 6234 deep groove ball bearings Bearing No. 6234 Size 170x310x52 mm Bore Diameter 170 mm Outer Diameter 310 mm Width 52 mm d 170 mm D 310 mm B 52 mm C 52 mm r min. 4 mm da min. 194 mm Da max. 288 mm ra max. 3 mm Weight 15,8 Kg Basic .