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F608 bearing dimensions & suffix variants

Look up recorded dimensions for designations beginning with F608. The table retains complete manufacturer designations so special suffixes and different dimensional variants remain visible.

On this page5 sections

Find by measured dimensions

Enter bore d, outside diameter D and width B. Use decimals or inch fractions such as 1/2 or 1 1/4.

For tapered assemblies use total width T; for units or flanged bearings also check the mounting drawing.

Exact model evidence

F608 dimensions and recorded technical data

The recorded F608 base designation measures 8×22×7 mm (inside diameter d × outside diameter D × width B). This answer uses unsuffixed records from NSK, KOYO. It does not assign the same dimensions or operating ratings to every suffix.

The numeric series boundary is preserved: a longer number is not included merely because its first digits match. 7 recorded variants are listed. A dash means the value is missing, not zero.

Exact designation reference

Catalogue parameters for F608

Choose the complete brand and marking before reading a value. These source-labelled records add dimensions, construction and engineering properties where they were recorded; a shared model number does not establish interchangeability.

Units, ranges and minimum/maximum qualifiers are retained. The data is a dated catalogue reference, not a certified drawing, a complete current specification or an operating approval.

KOYO F608 — 15 recorded parameters

Deep groove ball bearing

Reference: JTEKT / Koyo catalogue; source snapshot 2026-09-02.

Read the complete suffix and recorded construction. Similar dimensions do not prove identical seals, clearance, precision or material.

Values shown are retained from the recorded source. Zero boundary dimensions and zero load ratings from incomplete legacy feeds are withheld rather than presented as usable specifications.

Technical Data

ParameterSource symbolRecorded value
dNot separately recorded8 mm
DNot separately recorded22 mm
BNot separately recorded7 mm
R(Min.)Not separately recorded0.3 mm
Basic Load Ratings : CrNot separately recorded4.10 kN
Basic Load Ratings : C0RNot separately recorded1.35 kN
Fatigue Load Limit : CuNot separately recorded0.060 kN
Factor : F0Not separately recorded12.4
Limiting Speeds(Grease Lub.)Not separately recorded34000 min-1
Limiting Speeds(Oil Lub.)Not separately recorded41000 min-1
Dimensions Of Flange D1Not separately recorded25 mm
Dimensions Of Flange C1Not separately recorded1.5 mm
Da(Min.)Not separately recorded10 mm
Ra(Max.)Not separately recorded0.3 mm
Mass(Refer.)Not separately recorded13 g
Open KOYO F608 product record →
Brand / full designationNamed dimensions (mm / in)Dynamic C (kN)Static C0 (kN)Reference speed (rpm)Limiting speed (rpm)Mass (kg / g)
NSKF608Deep groove ball bearing
Bore diameter (d)
8 mm
0.314961 in
Body outside diameter (D)
22 mm
0.866142 in
Bearing width (open) (B)
7 mm
0.275591 in
3.65 kN1.37 kN——0.0134 kg13.4 g
KOYOF608Deep groove ball bearing
Bore diameter (d)
8 mm
0.314961 in
Outside diameter (D)
22 mm
0.866142 in
Width (B)
7 mm
0.275591 in
4.1 kN1.35 kN—34000 rpmLimiting Speeds(Grease Lub.): 34000 min-1Limiting Speeds(Oil Lub.): 41000 min-10.013 kg13 g
FAGF608-2Z-HLCDeep groove ball bearing
Bore diameter (d)
8 mm
0.314961 in
Outside diameter (D)
22 mm
0.866142 in
Width (B)
7 mm
0.275591 in
3.3 kN1.37 kN31500 rpm40000 rpm0.0142 kg14.2 g
NSKF608DDDeep groove ball bearing
Bore diameter (d)
8 mm
0.314961 in
Body outside diameter (D)
22 mm
0.866142 in
Catalogue width (symbol unverified)
7 mm
0.275591 in
3.65 kN1.37 kN———
NSKF608VVDeep groove ball bearing
Bore diameter (d)
8 mm
0.314961 in
Body outside diameter (D)
22 mm
0.866142 in
Catalogue width (symbol unverified)
7 mm
0.275591 in
3.65 kN1.37 kN———
NSKF608ZZDeep groove ball bearing
Bore diameter (d)
8 mm
0.314961 in
Body outside diameter (D)
22 mm
0.866142 in
Catalogue width (symbol unverified)
7 mm
0.275591 in
3.65 kN1.37 kN——0.0135 kg13.5 g
KOYOF608 ZZDeep groove ball bearing
Bore diameter (d)
8 mm
0.314961 in
Outside diameter (D)
22 mm
0.866142 in
Width (B)
7 mm
0.275591 in
4.1 kN1.35 kN—34000 rpmLimiting Speeds(Grease Lub.): 34000 min-1Limiting Speeds(Oil Lub.): - min-10.013 kg13 g
Compare recorded seals, clearance, precision and materials

Manufacturer wording is retained. A missing property is not inferred from another brand or a similar suffix.

Brand / designationClosureOriginal precisionClearanceCageMaterialLubricant
NSK F608OpenNot recordedNot recordedNot recordedNot recordedNot recorded
KOYO F608OpenNot recordedNot recordedNot recordedNot recordedNot recorded
FAG F608-2Z-HLC2Z — Non-contact shield on both sidesPN — Normal (ISO 492:2023)CN (Group N) — Normal internal clearanceJN — Steel sheet metalNot recordedLubricating grease
NSK F608DDContact rubber seals on both sides (DD)Not recordedNot recordedNot recordedNot recordedNot recorded
NSK F608VVNon-contact rubber seals on both sides (VV)Not recordedNot recordedNot recordedNot recordedNot recorded
NSK F608ZZMetal shields on both sides (ZZ)Not recordedNot recordedNot recordedNot recordedNot recorded
KOYO F608 ZZShielded ZZNot recordedNot recordedNot recordedNot recordedNot recorded

How to compare these values

  • Use the displayed dimension names and original symbols. Housing length L, height H2 and flange width are not bearing outside diameter D. A catalogue width with an unverified symbol must not be assumed to be inner-ring width B or assembly width T. Open the product record for mounting dimensions and geometry.
  • Inch values are calculated from the recorded millimetres using 25.4 mm per inch, rounded to six decimal places. They do not change a metric bearing into an inch-series bearing. Gram values are converted from the recorded mass in kilograms.
  • C and C0 describe different rating conditions. They are not a single safe working-load limit and cannot replace an application load calculation.
  • Reference and limiting speeds are separate catalogue values. The source grease/oil context is shown where recorded. Lubricant, seals, loads, fit, clearance and cooling affect the usable operating speed.
  • A common base number does not prove equivalent seals, clearance, precision, material or interchangeability. Open the full designation for these fields.

Related prefix matches — other model numbers may appear

These discovery results can contain a longer number or a different component. They are not specifications for the requested exact model. Open the complete product to inspect its original geometry.

Check the drawing before substituting

Nominal dimensions are not shaft-fit tolerances. Different variants can add grooves, flanges, wider rings or assembly components. When the table has different dimensions, the complete designation—not the shared prefix—controls.

Reference basis & data limits

Manufacturer terminology is retained in the product records. Technical reference basis: JTEKT Basic Bearing Knowledge (boundary dimensions, tolerance classes and lubrication); NSK Bearing ABCs (lubrication, designations and clearance); NTN technical FAQs (closure codes and component interchange); SKF rolling-bearing selection and maintenance references.

Selection workflows and catalogue grouping are BearingScope editorial aids. Verify the current drawing and application requirements before using a candidate. Missing database information is not converted into an assumed match.

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