684ZZ ABEC-5 Miniature Ball Bearings (10 PCS)
$9.99
- Structure of bearing model 684zz :Inner & outer ring, cage, steel balls, grease, shield
- Our bearing is pre-lubricated with grease,The main purpose of lubrication is to reduce friction that may cause premature failure.
- Nylon plastic retainers,Use for high speed rotation and low noise levels，The ZZ shield cannot be removed
- Bearing is made of chrome steel material,The typical surface hardness for bearing components made from this material ranges from 60-64 on the Rockwell hardness C scale (Rc).
- Bore Dia (d): 4.000 mm Outer Dia (D): 9.000 mm Width (B): 4.000 mm
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