JTEKT/Koyo deep groove ball bearing · Shielded ZZ
63/28 ZZ
Manufacturer-published boundary dimensions, basic load ratings, fatigue limit, and f0 factor.
Live manufacturer specification row
Published specifications
- Designation
- 63/28 ZZ
- Classification
- Shielded ZZ
- Bore d
- 28 mm
- Outside diameter D
- 68 mm
- Width B
- 18 mm
- Minimum corner radius r
- 1.1 mm
- Basic dynamic load rating Cr
- 29.4 kN
- Basic static load rating C0r
- 13.1 kN
- Fatigue load limit Cu
- 0.99 kN
- Factor f0
- 13.3
- Published row text
- 63/28 ZZ | 28 | 68 | 18 | 1.1 | 29.4 | 13.1 | 0.99 | 13.3
Verification boundary
What still needs to match
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.
Related Koyo bearings
Same bore dimension
Shielded ZZ60/28 ZZD 52 mm · B 12 mmShielded ZZ62/28 ZZD 58 mm · B 16 mmNon-contact sealed60/28 2RUD 52 mm · B 12 mmNon-contact sealed62/28 2RUD 58 mm · B 16 mmNon-contact sealed63/28 2RUD 68 mm · B 18 mmExtremely light contact sealed60/28 2RDD 52 mm · B 12 mmExtremely light contact sealed62/28 2RDD 58 mm · B 16 mmExtremely light contact sealed63/28 2RDD 68 mm · B 18 mm