Industrial replacement referenceSource-backed records · No compatibility guesswork

JTEKT/Koyo deep groove ball bearing · Non-contact sealed

6004 2RU

Manufacturer-published boundary dimensions, basic load ratings, fatigue limit, and f0 factor.

Bore d20 mmOutside diameter D42 mmWidth B12 mmDynamic rating Cr11.7 kNKoyo calculation tool ↗

Live manufacturer specification row

Published specifications

JTEKT/Koyo
Designation
6004 2RU
Classification
Non-contact sealed
Bore d
20 mm
Outside diameter D
42 mm
Width B
12 mm
Minimum corner radius r
0.6 mm
Basic dynamic load rating Cr
11.7 kN
Basic static load rating C0r
5.05 kN
Fatigue load limit Cu
0.35 kN
Factor f0
13.9
Published row text
6004 2RU | 20 | 42 | 12 | 0.6 | 11.7 | 5.05 | 0.35 | 13.9
Open Koyo CAD ↗

Verification boundary

What still needs to match

Do not infer interchange
Designation and sealingConfirm the complete bearing number and exact shield/seal construction.
Fit and geometryVerify shaft/housing fits, shoulders, fillets, internal clearance, and installation constraints.
DutyCheck speed, temperature, lubrication, contamination, load direction, and required life.
Current manufacturer dataUse the linked JTEKT/Koyo calculation tool and current catalog before ordering.

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