21308RHK KOYO Da max. 81.5 mm 40x90x23mm Spherical roller bearings
| Bearing number | 21308RHK |
| Size (mm) | 40x90x23 |
| Brand | KOYO |
| Bore Diameter (mm) | 40 |
| Outer Diameter (mm) | 90 |
| Width (mm) | 23 |
| d | 40 mm |
| D | 90 mm |
| B | 23 mm |
| C | 23 mm |
| r min. | 1.5 mm |
| da min. | 48.5 mm |
| Da max. | 81.5 mm |
| ra max. | 1.5 mm |
| Weight | 0.77 Kg |
| Basic dynamic load rating (C) | 85.7 kN |
| Basic static load rating (C0) | 95.5 kN |
| (Grease) Lubrication Speed | 4100 r/min |
| (Oil) Lubrication Speed | 5500 r/min |
| Calculation factor (e) | 0.26 |
| Calculation factor (Y0) | 2.5 |
| Calculation factor (Y1) | 2.55 |
Detailed Parameters
parameter：
| NJ 2207 Cylindrical roller bearings | Bore Diameter :35mm ，Width :23mm ，Outer Diameter :72mm ，Brand:NACHI ，d:35 mm ，Size :35x72x23mm |
| NJ236E Cylindrical roller bearings | Outer Diameter :320mm ，Size :180x320x52mm ，Width :52mm ，Bore Diameter :180mm ，Brand:NTN |
| K 28x32x17 Needle roller bearings | Ew:32 mm ，Brand:NBS ，Bc:17 mm ，Bore Diameter :28mm ，Outer Diameter :32mm ，Fw:28 mm |
| W 61905 R Deep groove ball bearings | Brand:SKF ，Size :25x42x9mm ，Outer Diameter :42mm ，Bore Diameter :25mm |
| 46162/46368 Tapered roller bearings | Size :41.275x93.662x31.75mm ，Outer Diameter :93.662mm ，Brand:CX ，Bore Diameter :41.275mm |
| 37425/37625 Tapered roller bearings | Brand:ISO ，Outer Diameter :158.75mm ，Bore Diameter :107.95mm ，Size :107.95x158.75x23.02mm |
| D/W R2-6 Deep groove ball bearings | Bore Diameter :3.175mm ，Size :3.175x9.525x2.779mm ，Outer Diameter :9.525mm ，Brand:SKF |
| 32219 Tapered roller bearings | Bore Diameter :95mm ，Brand:PFI ，Outer Diameter :170mm ，Size :95x170x45.5mm |
| K20X26X20 Needle roller bearings | Brand:INA ，Bore Diameter :20mm ，Fw:20 mm ，Outer Diameter :26mm |
| P6904-GB Deep groove ball bearings | Brand:ZEN ，Bore Diameter :20mm ，Size :20x37x9mm ，Outer Diameter :37mm |
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