12168/12303 KOYO Calculation factor (Y0) 0.65 42.862×76.992×17.463mm Tapered roller bearings
| Bearing number | 12168/12303 |
| Size (mm) | 42.862×76.992×17.463 |
| Brand | KOYO |
| Bore Diameter (mm) | 42.862 |
| Outer Diameter (mm) | 76.992 |
| Width (mm) | 17.463 |
| d | 42.862 mm |
| D | 76.992 mm |
| T | 17.463 mm |
| B | 17.145 mm |
| C | 11.908 mm |
| a | 17.5 mm |
| r min. | 1.6 mm |
| r2 min. | 1.6 mm |
| da min. | 51 mm |
| Da | 68 mm |
| db min | 48.5 mm |
| ra max. | 1.6 mm |
| rb max. | 1.6 mm |
| Db | 73 mm |
| Weight | 0.317 Kg |
| Basic dynamic load rating (C) | 48.4 kN |
| Basic static load rating (C0) | 62.2 kN |
| (Grease) Lubrication Speed | 5000 r/min |
| (Oil) Lubrication Speed | 6600 r/min |
| Calculation factor (e) | 0.51 |
| Calculation factor (Y0) | 0.65 |
Detailed Parameters
parameter：
| Bones Race REDS Skateboard bearings | Outer Diameter :22mm ，Bore Diameter :8mm ，Brand:Bones Bearings ，Size :8x22x7mm |
| NBX 1523 Complex bearings | Brand:IKO ，Bore Diameter :15mm ，D:24 mm ，Outer Diameter :24mm ，Fw:15 mm ，D1:28 mm |
| NKJ85/36 Needle roller bearings | Bore Diameter :85mm ，Size :85x115x36mm ，Outer Diameter :115mm ，Brand:KOYO |
| NJ 2219 Cylindrical roller bearings | Brand:ISB ，Width :43mm ，Size :95x170x43mm ，Bore Diameter :95mm ，Outer Diameter :170mm |
| E-EE547341D/547480/547481DG2 Tapered roller bearings | Width :876.3mm ，Brand:NTN ，Size :863.6x1219.2x876.3mm ，Outer Diameter :1219.2mm ，d:863.6 mm ，Bore Diameter :863.6mm |
| 6216N Deep groove ball bearings | Width :26mm ，Outer Diameter :140mm ，Brand:NACHI ，Bore Diameter :80mm ，Size :80x140x26mm |
| NU 321 EM Cylindrical roller bearings | Size :105x225x49mm ，d:105 mm ，Bore Diameter :105mm ，Brand:NSK ，Outer Diameter :225mm ，Width :49mm |
| MLE71905HVUJ74S Angular contact ball bearings | D1:37.65 mm ，d2:29.4 mm ，D2:38.95 mm ，d1:30.6 mm |
| IJ223068 Angular contact ball bearings | G:114.3 mm ，Brand:ILJIN ，P:110 mm ，I:69.85 mm ，F:160 mm ，E:70.46 mm |
| 621/612 Tapered roller bearings | Width :41.275mm ，Size :53.975x120.65x41.275mm ，Bore Diameter :53.975mm ，Brand:FBJ ，Outer Diameter :120.65mm |
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