Timken® A4051-90029 A4000 Type TNASWH Tapered Roller Timken® A4051-90029 A4000 Type TNASWH Tapered Roller Bearing Assembly, 1/2 in Dia Bore, 1-3/4 in OD, 2 Rows, 1.13 in W, 147000 lb Dynamic/506000 lb Static Load.Tnaswh two-row tapered roller bearings of page 2This is a two-row bearing assembly with two inner races and a one piece outer race.The outer race has a heavy wall section, which isself-supporting, allowing 
TIMKEN® METALS PRODUCT CATALOGAvailable designs include two-, four- or six-row tapered roller bearings, and multi-row cylindrical bearings. RX. Composition: Two cylindrical.Timken® A4051-90029 | Turtle & HughesTimken® A4051-90029 A4000 Type TNASWH Tapered Roller Bearing Assembly, 1/2 in Bore Dia, 1-3/4 in OD, 2 Rows, 1.13 in W, 147000 lb Dynamic/506000 lb Static.TnasWH TWo-roW TaPered roller bearingsTnasWH TWo-roW TaPered roller bearings  Bore size and outside diameter (OD) are important specifications to consider when selecting tapered roller bearings.