21308E SKF Calculation factor (Y1) 2.8 40x90x23mm Spherical roller bearings
| Bearing number | 21308E |
| Size (mm) | 40x90x23 |
| Brand | SKF |
| Bore Diameter (mm) | 40 |
| Outer Diameter (mm) | 90 |
| Width (mm) | 23 |
| d | 40 mm |
| D | 90 mm |
| B | 23 mm |
| C | 23 mm |
| b | 5.5 mm |
| d2 | 60 mm |
| r1 min. | 1.5 mm |
| r2 min. | 1.5 mm |
| D1 | 79.8 mm |
| K | 3 mm |
| da min. | 49 mm |
| Da max. | 81 mm |
| ra max. | 1.5 mm |
| Weight | 0.75 Kg |
| Basic dynamic load rating (C) | 104 kN |
| Basic static load rating (C0) | 108 kN |
| Fatigue load limit (Pu) | 11.8 |
| Reference speed | 7000 r/min |
| Limiting speed | 9500 r/min |
| Calculation factor (e) | 0.24 |
| Calculation factor (Y0) | 2.8 |
| Calculation factor (Y1) | 2.8 |
Detailed Parameters
parameter：
| 4T-28680/28622 Tapered roller bearings | Dynamic load, C:88.5 kN ，Y0:0.82 ，Mass:0.77 kg ，d1:77 mm ，Y2:1.49 ，e:0.4 |
| SAZP9N Plain bearings | d:9.53 mm ，Brand:LS ，Size :9.53x25.4x12.7mm ，Width :12.7mm ，Outer Diameter :25.4mm ，Bore Diameter :9.53mm |
| L305649/L305610 Tapered roller bearings | Brand:Timken ，Size :50.8x80.962x18.258mm ，Outer Diameter :80.962mm ，Bore Diameter :50.8mm |
| AST850SM 5030 Plain bearings | Outer Diameter :55mm ，Bearing Type:metal with bronze and graphite ，Bore Diameter :50mm ，Brand:AST |
| 2222-K-M-C3 + H322 Self aligning ball bearings | Bore Diameter :100mm ，Outer Diameter :200mm ，Size :100x200x53mm ，Width :53mm ，Brand:FAG |
| E-4R11202 Cylindrical roller bearings | Bore Diameter :560mm ，Size :560x680x360mm ，Width :360mm ，Brand:NTN ，Outer Diameter :680mm ，d:560 mm |
| UKPX11+H2311 Bearing units | A:79 mm ，B1:59 mm ，d:50 mm ，Bore Diameter :50mm ，Width :69.8mm ，Brand:NACHI |
| MHKM1520 Needle roller bearings | Outer Diameter :22mm ，Brand:KOYO ，Bore Diameter :15mm ，Size :15x22x20mm |
| 6580/6535 Tapered roller bearings | Size :88.9x161.925x53.975mm ，Width :53.975mm ，Bore Diameter :88.9mm ，Outer Diameter :161.925mm ，Brand:CX |
| 1214 Self aligning ball bearings | Brand:FBJ ，Bore Diameter :70mm ，Size :70x125x24mm ，d:70 mm ，Width :24mm ，Outer Diameter :125mm |
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