LUANAYUN 3x8x4mm Miniature Ball Bearings 619/3ZZ - 100PCS ABEC-7 Chrome Steel Precision 693ZZ 52100 Bearings for Phone Cases, Small Machinery & DIY Projects

Miniature Bearing Types & FeaturesMiniature and instrument ball bearings can be divided into two basic types, deep groove and angular contact. The first (deep groove) can also be classified as "Open", "Shielded", or "Sealed" depending on the existence and type of seal or shield. Deep groove ball bearings have two inherent advantages;they can sustain some axial load in either direction as well as radial loads, and the two raceway cross-sections are simple circular arcs which can be very precisely finished so the bearings have low friction and very little noise or vibration. Several different cage designs are available with different characteristics and the choice depends upon the individual application.Model Number: 693ZZABEC-7Torque Capacity: 3x8x4mmSurface Roughness: Ra 0.05Material: Chrome Steel/GCr15Coatings: Chrome Steel/GCr15Structure: Ball bearing

Model: 693-ZZ

Inner (d): 3 mm; Outer (D): 8 mm; Width (B): 4 mm

Grade: ABEC-7; Seal: Shield

Material: 52100 Chrome Steel

Qty: 1 Lot = 100 Pcs