Industrial replacement referenceSource-backed records · No compatibility guesswork

JTEKT/Koyo deep groove ball bearing · Shielded ZZ

6028 ZZX

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

Bore d140 mmOutside diameter D210 mmWidth B33 mmDynamic rating Cr137 kNKoyo calculation tool ↗

Live manufacturer specification row

Published specifications

JTEKT/Koyo
Designation
6028 ZZX
Classification
Shielded ZZ
Bore d
140 mm
Outside diameter D
210 mm
Width B
33 mm
Minimum corner radius r
2 mm
Basic dynamic load rating Cr
137 kN
Basic static load rating C0r
109 kN
Fatigue load limit Cu
4.55 kN
Factor f0
15.9
Published row text
6028 ZZX | 140 | 210 | 33 | 2 | 137 | 109 | 4.55 | 15.9
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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