| Items |
 21304EKW33 Double Row Spherical Roller Bearings with Tapered Bore |
21304EKW33C3 Double Row Spherical Roller Bearings with Tapered Bore |
21305EKW33 Double Row Spherical Roller Bearings with Tapered Bore |
21305EKW33C3 Double Row Spherical Roller Bearings with Tapered Bore |
 22205AEXKW33 Spherical Roller Bearing - Double Row, Tapered Bore, with Lubrication Groove, High Capacity, High Speed |
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| Brand | Nachi America, Inc. | |||||||||
| Bore Type | Tapered Bore | |||||||||
| Enclosure | Open | |||||||||
| Configuration | Double Row | |||||||||
| Bore Size | 20 mm | 20 mm | 25 mm | 25 mm | 25 mm | |||||
| Outside Diameter | 52 mm | 52 mm | 62 mm | 62 mm | 52 mm | |||||
| Width | 15 mm | 15 mm | 17 mm | 17 mm | 18 mm | |||||
| Groove Width A | 6 mm | 6 mm | 6 mm | 6 mm | 5 mm | |||||
| Fillet Radius/Chamfer | 1.1 mm | 1.1 mm | 1.1 mm | 1.1 mm | 1 mm | |||||
| Fillet Radius/Chamfer A | ||||||||||
| Roller Profile | Symmetric | Symmetric | Symmetric | Symmetric | Asymmetric | |||||
| Center Guidance | Floating Steel Ring | Floating Steel Ring | Floating Steel Ring | Floating Steel Ring | Fixed Inner Ring Rib | |||||
| Retainer Material | Pressed Steel | Pressed Steel | Pressed Steel | Pressed Steel | Machined Brass | |||||
| Dynamic Load Rating | 47,000 N | 47,000 N | 64,000 N | 64,000 N | 48,500 N | |||||
| Static Load Rating | 33,500 N | 33,500 N | 47,500 N | 47,500 N | 34,500 N | |||||
| Limiting Speed - Grease | 11,000 rpm | 11,000 rpm | 9,000 rpm | 9,000 rpm | 13,300 rpm | |||||
| Limiting Speed - Oil | 14,000 rpm | 14,000 rpm | 11,500 rpm | 11,500 rpm | 16,500 rpm | |||||
| Nr. of Holes | 4 | |||||||||
| Weight | 0.180 kg | 0.180 kg | 0.290 kg | 0.290 kg | 0.180 kg | |||||
| Hole Diameter (do) | 3 mm | 3 mm | 6 mm | 6 mm | 3 mm | |||||
| da (min) | 27 mm | 27 mm | 32 mm | 32 mm | 30.5 mm | |||||
| Da (max) | 45 mm | 45 mm | 53 mm | 53 mm | 46.5 mm | |||||
| ra (max) | 1 mm | |||||||||
| Constant e | 0.31 | 0.31 | 0.28 | 0.28 | 0.43 | |||||
| Axial Load Factor Y0 | 2.15 | 2.15 | 2.34 | 2.34 | 1.53 | |||||
| Axial Load Factor Y1 | 2.20 | 2.20 | 2.39 | 2.39 | 1.57 | |||||
| Axial Load Factor Y2 | 3.27 | 3.27 | 3.56 | 3.56 | 2.33 | |||||
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