# 30321 Tapered Roller Bearing: 105×225×53.5 mm Size Sheet
Metric series 30321 is a single-row tapered roller, complete cup and cone, with 105 mm bore, 225 mm outside diameter, and 53.5 mm total width T. Cone width B is 49 mm and cup width C is 41 mm. Those figures belong to 30321, not to 30320 or 30322.
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The bearing takes combined radial and axial load and is often selected for mining and other heavy equipment. Pressed-steel cages and chrome-steel rings are standard on this listing; precision is offered at P6 (ABEC-3), with clearance stated at order.
30321 is the Made-in-China product page from Shandong TFL Bearing Co., Ltd. Check the size sheet there before a 30320 (100 × 215 × 51.5 mm) is issued by habit.
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