F603

Miniature Flanged Deep Groove Ball Bearings

Product Overview & Technical Guide

Miniature flanged deep groove ball bearings are precision bearings with an integral flange (locating ring) formed on one side of the outer ring, designed for applications where bore diameters range from 1.5 mm to 9 mm. The flange allows the bearing to be retained axially in the housing without a separate circlip, end cover, or housing shoulder — making them ideal for compact, lightweight assemblies.

These bearings share the same internal geometry, load capacity, and speed performance as standard miniature deep groove ball bearings. The flange is formed as part of the outer ring and does not alter dynamic or static load ratings.

 

Key Features

•Integral axial location

The flange on the outer ring retains the bearing axially in the housing bore; no circlip, shoulder, or end plate required.

•Ultra-compact design

Minimal radial and axial space; suited to high-density layouts in small motors and precision mechanisms.

•High-speed capability

Low friction and precision ball paths support high rotational speeds; grease and oil lubrication limits are detailed per size.

•Complete dimensional data

Each size includes flange OD (Df) and flange width (Bf) for full housing bore and axial depth design.

•Same performance envelope

Dimensions d, D, and B follow ISO miniature bearing standards; load ratings match the equivalent open miniature bearing.

Key Dimensions

The table below lists the complete key dimensions for all four miniature flanged series (F60x, F62x, F68x, F69x). D is the bearing outer diameter (excluding flange), Df is the flange (total) outer diameter, and Bf is the flange width — the values needed to machine the housing bore and axial locating face. All values are given in mm.

Model d (mm) D (mm) B (mm) Df (mm) Bf (mm)

 

Model	d (mm)	D (mm)	B (mm)	Df (mm)	Bf (mm)
F60x Series (F603 – F609)
F603	3	9	5	10.3	0.7
F604	4	12	5	13.4	0.7
F605	5	14	5	15.5	0.8
F606	6	17	6	18.6	0.9
F607	7	19	6	20.7	1
F608	8	22	7	23.8	1.1
F609	9	24	7	25.8	1.1
F62x Series (F623 – F629)
F623	3	10	4	11.2	0.6
F624	4	13	5	14.4	0.7
F625	5	16	5	17.5	0.8
F626	6	19	6	20.6	0.9
F627	7	22	7	23.8	1
F628	8	24	8	25.9	1.1
F629	9	26	8	27.9	1.1
F68x Series (F681 – F689)
F681	1.5	4	1.2	4.6	0.3
F682	2	5	1.5	5.7	0.4
F683	3	7	2	8.1	0.6
F684	4	9	2.5	10.3	0.7
F685	5	11	3	12.5	0.9
F686	6	13	3.5	14.6	1
F687	7	14	3.5	15.6	1
F688	8	16	5	17.8	1.2
F689	9	17	5	18.8	1.2
F69x Series (F692 – F699)
F692	2	6	2.3	6.7	0.4
F693	3	8	3	8.9	0.6
F694	4	11	4	12.2	0.8
F695	5	13	4	14.4	0.9
F696	6	15	5	16.5	1
F697	7	17	5	18.6	1.1
F698	8	19	6	20.7	1.2
F699	9	20	6	21.7	1.2

 

Note: Df = D + flange extension; Bf is the axial thickness of the flange. Full dimension tables are available on request.

 

 

 

Construction & Materials

Inner & outer rings:

Bearing Steel, precision ground raceways

Balls:

Bearing Steel, grade G10

Cage:

Steel Cage (stamped steel)

Sealing:

Open, shielded (ZZ), and sealed (2RS) versions available

Manufacturing & Performance

Precision polished raceways

smooth ball paths for low friction and low running noise, even at high rotational speeds.

Optional anti-corrosion coating

protective plating on rings and shield for improved durability in humid or mildly corrosive environments.

Low noise & smooth rotation

suitable for precision small motors, office equipment, and medical devices where quiet operation matters.

High temperature tolerance

stable performance under continuous operation; open and ZZ types support external lubrication for elevated temperature duties.

Typical Applications

Precision small motors and servo motors

Office equipment

printers, copiers, paper feeders

Medical devices and laboratory instruments

RC models, drones, and hobbyist mechanisms

Textile machinery and precision spindles

Automation and robotics

compact actuator joints

Skateboards, inline skates, and pulley wheels

 

Available Series

 

Series	Bore (mm)	Section
F68x (618xx flange)	1.5 – 9	Ultra-thin miniature
F69x (619xx flange)	2 – 9	Thin-section miniature
F60x (600xx flange)	3 – 9	Standard miniature
F62x (620xx flange)	3 – 9	Standard miniature

 

F68x Series (618xx flange)

Ultra-thin miniature flanged bearings — the flanged version of the 618xx thin-section series. Bore range 1.5 – 9 mm. Used where the thinnest possible cross-section is required (e.g., F683, F685, F688).

F69x Series (619xx flange)

Thin-section miniature flanged bearings — the flanged version of the 619xx series. Bore range 2 – 9 mm. Slightly thicker than the 68 series, offering higher load capacity (e.g., F693, F696, F698).

F60x & F62x Series

Standard-section miniature flanged bearings covering the 600xx and 620xx size lines (e.g., F603–F609, F623–F629). These provide a more robust cross-section for applications needing greater radial capacity while retaining the flange for axial location.

Equivalent Designations

The F-prefix naming follows ISO convention: for example, F688 corresponds to a 688 deep groove ball bearing with integral flange, and F698 corresponds to a 698 with flange. Cross-references to major manufacturers' part numbers are available upon request.

When ordering, please specify the complete designation (e.g., F688, F688-2RS, F688-ZZ) to ensure correct supply. All models are available in Open, 2RS (rubber sealed), and ZZ (shielded) configurations.

Need Help Selecting the Right Bearing?

Contact our technical team for one-on-one consultation. We support custom drawings and samples — send us your requirements and we'll confirm availability and lead time. For non-standard dimensions, special clearances, or alternative cage materials, our engineering team can assist on request.