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When your project demands a bearing that stays put under radial and axial loads without slipping through a housing bore, standard bearings fall short. Engineers, hobbyists, and repair technicians working on RC cars, 3D printers, robotics arms, and small machinery need a flanged solution that self-locates and resists axial displacement — that's exactly what these miniature flange deep groove ball bearings deliver.
Each pack contains 10 pieces of the same size, manufactured from bearing steel with double-shielded (ZZ) construction to keep lubricant in and contaminants out. The flange outer diameter (D1) extends beyond the standard outer diameter (D), providing a positive stop against the housing face. Available bore sizes (d) range from 3 mm (0.12 in) to 20 mm (0.79 in), with outer diameters (D) from 7 mm (0.28 in) to 32 mm (1.26 in) and widths (B) from 3 mm to 7 mm — select your exact size from the variant options above.
Typical use cases include: replacing worn flanged bearings in RC car wheel hubs and gearboxes where axial retention is critical; upgrading 3D printer extruder idler pulleys and Z-axis lead screw supports that require a compact, self-locating bearing; and servicing small electric motors, fans, and spindle assemblies in industrial and hobby CNC equipment where miniature flanged deep groove ball bearings reduce assembly time and improve concentricity.
Steel shields on both sides retain factory grease and block dust, metal chips, and moisture from reaching the raceway — extending service life in workshop and field environments.
The raised flange (D1) seats flush against the housing face, preventing axial migration under thrust loads without requiring snap rings or retaining clips.
Hardened bearing steel raceways and balls deliver consistent radial load capacity and dimensional stability across a wide operating temperature range.
Sold in packs of 10 identical bearings, making them ideal for multi-axis machines, fleet repairs, or stocking a spare-parts kit without overpaying for singles.
30 size variants covering F604ZZ through F6804ZZ and F623ZZ through F699ZZ series — bore diameters from 3 mm to 20 mm — so you can source multiple sizes from a single trusted supplier.
Dimensions follow standard flanged miniature bearing designations, making these a direct drop-in replacement for worn bearings in RC vehicles, 3D printers, robotics, and small motors.
| Bearing Type | Flanged Deep Groove Ball Bearing |
|---|---|
| Shield Type | ZZ (Double Steel Shield) |
| Material | Bearing Steel |
| Bore Diameter (d) | 3 mm – 20 mm (0.12 in – 0.79 in), see variant options |
| Outer Diameter (D) | 7 mm – 32 mm (0.28 in – 1.26 in), see variant options |
| Flange Outer Diameter (D1) | 8.1 mm – 35 mm, see variant options |
| Width (B) | 3 mm – 7 mm, see variant options |
| Quantity per Pack | 10 Pieces |
| Series | F604ZZ, F605ZZ, F606ZZ, F607ZZ, F608ZZ, F623ZZ–F626ZZ, F634ZZ–F635ZZ, F683ZZ–F689ZZ, F693ZZ–F699ZZ, F6800ZZ–F6804ZZ |
| Lubrication | Factory-greased (sealed) |
| Load Direction | Radial and light axial |
Match the bore diameter (d) to your shaft diameter, the outer diameter (D) to your housing bore, and confirm the flange diameter (D1) is larger than the housing bore so the flange seats correctly. The width (B) must fit within your available axial space. All four dimensions are listed in each variant name in the format d×D×B×D1 mm.
These are miniature deep groove ball bearings designed for light-to-moderate radial loads and light axial (thrust) loads. They are well-suited for RC vehicles, 3D printers, small motors, and robotics joints. For heavy industrial loads, verify the dynamic and static load ratings for your specific size.
These bearings are made from bearing steel, which offers good hardness and wear resistance but is not inherently stainless. They are suitable for dry or lightly lubricated indoor environments. For wet, humid, or chemically exposed applications, consider stainless steel flanged bearings instead.
"ZZ" indicates double steel shields on both sides of the bearing. The shields retain the factory-applied grease and prevent contaminants such as dust and metal particles from entering the raceway. Unlike rubber seals (2RS), ZZ shields allow slightly higher speeds but provide less sealing against liquids.
Yes, provided the dimensions match. These bearings follow standard flanged miniature bearing designations. Measure your existing bearing's bore (d), outer diameter (D), flange diameter (D1), and width (B), then select the matching variant. Cross-reference dimensions if your bearing has a different designation.
Multi-axis machines such as 3D printers, CNC routers, and robotic arms often require 4–12 identical bearings per build. Buying a 10-piece pack ensures matched bearings from the same production batch, reduces per-unit cost, and gives you spares for future maintenance without reordering.
Yes. Flanged miniature ball bearings are widely used in 3D printer idler pulleys, extruder tension arms, and Z-axis lead screw supports. The flange provides axial retention without additional hardware. Common sizes include F604ZZ (4×12×4 mm) and F605ZZ (5×14×5 mm).
