W678AZ NTN 8x12x3.5mm Da max. 11.2 mm Deep groove ball bearings
| Bearing number | W678AZ |
| Size (mm) | 8x12x3.5 |
| Brand | NTN |
| Bore Diameter (mm) | 8 |
| Outer Diameter (mm) | 12 |
| Width (mm) | 3.5 |
| d | 8 mm |
| D | 12 mm |
| B | 3.5 mm |
| C | 3.5 mm |
| r min. | 0.1 mm |
| da min. | 8.8 mm |
| da max | 9.1 mm |
| Da max. | 11.2 mm |
| ra max. | 0.1 mm |
| Weight | 0.86 Kg |
| Basic dynamic load rating (C) | 0.515 kN |
| Basic static load rating (C0) | 0.252 kN |
| (Grease) Lubrication Speed | 38 000 r/min |
| (Oil) Lubrication Speed | 45 000 r/min |
Detailed Parameters
parameter：
| 24152MBW33 Spherical roller bearings | Brand:AST ，Outer Diameter :440mm ，Width :180mm ，Bore Diameter :260mm ，Size :260x440x180mm |
| 112041X/112085G Tapered roller bearings | d:41.275 mm ，Size :41.275x85x55mm ，Brand:Gamet ，Width :55mm ，Outer Diameter :85mm ，Bore Diameter :41.275mm |
| 81107 Thrust roller bearings | d:35 mm ，d1:37 mm ，Brand:ISO ，Bore Diameter :35mm ，Outer Diameter :52mm |
| NA 4907 Needle roller bearings | Outer Diameter :55mm ，Width :20mm ，Brand:NBS ，Bore Diameter :35mm ，Size :35x55x20mm |
| UCFX08 Bearing units | A:40 mm ，d:40 mm ，A0:52.2 mm ，Brand:FYH ，A1:14 mm ，Bore Diameter :40mm |
| NJ2226-E-TVP3+HJ2226-E Cylindrical roller bearings | Bore Diameter :130mm ，Brand:NKE ，d:130 mm ，Width :64mm ，Outer Diameter :230mm ，Size :130x230x64mm |
| ZB1.20.0310.200-2SPTN Thrust ball bearings | Brand:ISB ，Bore Diameter :216mm ，Outer Diameter :400mm ，Size :216x400x55mm |
| K61×66×30 Needle roller bearings | Bore Diameter :61mm ，Bc:30 mm ，Outer Diameter :66mm ，Ew:66 mm ，Brand:NTN ，Fw:61 mm |
| 2303 Self aligning ball bearings | Outer Diameter :47mm ，Brand:NACHI ，Width :19mm ，Size :17x47x19mm ，d:17 mm ，Bore Diameter :17mm |
| 24038 K30 Spherical roller bearings | Bore Diameter :190mm ，Width :100mm ，Brand:ISB ，d:190 mm ，Size :190x290x100mm ，Outer Diameter :290mm |
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