6221 ZZX

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

Bore d105 mmOutside diameter D190 mmWidth B36 mmDynamic rating Cr166 kNKoyo calculation tool ↗

Live manufacturer specification row

Published specifications

JTEKT/Koyo

Designation: 6221 ZZX
Classification: Shielded ZZ
Bore d: 105 mm
Outside diameter D: 190 mm
Width B: 36 mm
Minimum corner radius r: 2.1 mm
Basic dynamic load rating Cr: 166 kN
Basic static load rating C0r: 105 kN
Fatigue load limit Cu: 5.7 kN
Factor f0: 14.4
Published row text: 6221 ZZX | 105 | 190 | 36 | 2.1 | 166 | 105 | 5.7 | 14.4

Verification boundary

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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