Surface Roughness:Ra 0.05 Torque Capacity:5x11x3mm Structure:Ball bearing Model Number:685 OPEN Coatings:Chrome Steel Material:52100 Chrome Steel Origin:Mainland China Miniature Bearing Types & Features Miniature 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. TECHNICAL SPECS Model: 685 Inner (d): 5 mm Outer (D): 11 mm Width (B): 3 mm Grade: ABEC-1 Material: 52100 Chrome Steel Seal: NO Qty: 1 Lot = 10 Pcs DIMENSIONS LIST FACTORY SHOW HISTORY FEEDBACK