Size: d: 8 | D: 24 | B: 8 | Flange Outer Diameter (Approx.): 26 mm

Bearing Type: Single-row deep groove ball bearing, flanged outer ring (F), double-sided metal shields (ZZ, non-contact type)

Model Designation: Domestic Old Model: 830028; Standard Model: F628ZZ

Material: Rings / Steel Balls: GCr15 (52100) Chromium Bearing Steel; Cage: Stamped Steel; Shields: Metal

Lubrication: Pre-filled with grease at the factory; sealed and maintenance-free (under general operating conditions)

Tolerance and Installation Tips
Inner Diameter Tolerance: Typically 0 to -0.008 mm (suitable for h6/h7 shafts);
Outer Diameter Tolerance: Typically 0 to -0.008 mm;


Flange Function: The outer ring features a flange, enabling axial positioning and preventing the bearing from shifting axially within the housing bore. This design is ideal for thin-wall installations and applications where axial fixing space is limited (e.g., small motors, 3D printers, fans, and precision instruments);

ZZ Designation: Indicates metal shields (dust covers). These provide protection against dust and foreign objects but are non-contact seals; they are not suitable for environments involving high-pressure water jets or strong corrosive agents. If water resistance is required, please select the 2RS flanged model (F628-2RS), which features double-sided rubber seals.