W684ZZ KOYO 4x9x4mm da min. 5.2 mm Deep groove ball bearings
| Bearing number | W684ZZ |
| Size (mm) | 4x9x4 |
| Brand | KOYO |
| Bore Diameter (mm) | 4 |
| Outer Diameter (mm) | 9 |
| Width (mm) | 4 |
| d | 4 mm |
| D | 9 mm |
| B | 4 mm |
| C | 4 mm |
| r min. | 0.15 mm |
| r1 min. | 0.15 mm |
| da min. | 5.2 mm |
| Da max. | 7.8 mm |
| ra max. | 0.1 mm |
| Weight | 0.0006 Kg |
| Basic dynamic load rating (C) | 0.64 kN |
| Basic static load rating (C0) | 0.23 kN |
| (Grease) Lubrication Speed | 59000 r/min |
Detailed Parameters
parameter：
| B7040-E-T-P4S Angular contact ball bearings | d:200 mm ，Width :51mm ，Outer Diameter :310mm ，Size :200x310x51mm ，Brand:FAG ，Bore Diameter :200mm |
| SC05A97CS35PX1/2AS Deep groove ball bearings | Brand:NTN ，Size :25x56x12mm ，Width :12mm ，Outer Diameter :56mm ，Bore Diameter :25mm |
| GTR 455930 Needle roller bearings | Width :30mm ，Bore Diameter :45mm ，Size :45x59x30mm ，Outer Diameter :59mm ，Brand:IKO |
| UCFL 217-52 Bearing units | Bore Diameter :82.55mm ，Dynamic Load Rating (Cr):18.866 ，Brand:AST ，Bearing Type:Cast iron housing |
| 33117A Tapered roller bearings | Size :85x140x41mm ，Bore Diameter :85mm ，Outer Diameter :140mm ，Brand:SNR |
| 577/572D+X1S-577 Tapered roller bearings | Bore Diameter :74.612mm ，Size :74.612x139.992x82.55mm ，Width :82.55mm ，Outer Diameter :139.992mm ，Brand:Timken |
| EX316 Deep groove ball bearings | Bore Diameter :80mm ，Outer Diameter :170mm ，Size :80x170x106.4mm ，Width :106.4mm ，Brand:SNR ，d:80 mm |
| M86643/M86610 Tapered roller bearings | Bore Diameter :25.4mm ，Outer Diameter :64.292mm ，Size :25.4x64.292x21.433mm ，Brand:Timken |
| T-EE134102/134144D+A Tapered roller bearings | Brand:NTN ，Outer Diameter :365.125mm ，d:260.35 mm ，Size :260.35x365.125x130.175mm ，Bore Diameter :260.35mm ，Width :130.175mm |
| 54311U+U311 Thrust ball bearings | Brand:ISO ，Bore Diameter :57mm ，D1:110 mm ，d1:45 mm ，d:57 mm |
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