6921-1 2RU

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

Bore d105 mmOutside diameter D145 mmWidth B20 mmDynamic rating Cr53 kNKoyo calculation tool ↗

Live manufacturer specification row

Published specifications

JTEKT/Koyo

Designation: 6921-1 2RU
Classification: Non-contact sealed
Bore d: 105 mm
Outside diameter D: 145 mm
Width B: 20 mm
Minimum corner radius r: 1.1 mm
Basic dynamic load rating Cr: 53 kN
Basic static load rating C0r: 42.1 kN
Fatigue load limit Cu: 1.95 kN
Factor f0: 16.4
Published row text: 6921-1 2RU | 105 | 145 | 20 | 1.1 | 53 | 42.1 | 1.95 | 16.4

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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