JTEKT/Koyo deep groove ball bearing · Non-contact sealed
6311 2RU
Manufacturer-published boundary dimensions, basic load ratings, fatigue limit, and f0 factor.
Live manufacturer specification row
Published specifications
- Designation
- 6311 2RU
- Classification
- Non-contact sealed
- Bore d
- 55 mm
- Outside diameter D
- 120 mm
- Width B
- 29 mm
- Minimum corner radius r
- 2 mm
- Basic dynamic load rating Cr
- 89.5 kN
- Basic static load rating C0r
- 45 kN
- Fatigue load limit Cu
- 3.45 kN
- Factor f0
- 13.2
- Published row text
- 6311 2RU | 55 | 120 | 29 | 2 | 89.5 | 45 | 3.45 | 13.2
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 ZZ6811 ZZD 72 mm · B 9 mmShielded ZZ6911 ZZD 80 mm · B 13 mmShielded ZZ6011 ZZD 90 mm · B 18 mmShielded ZZ6211 ZZD 100 mm · B 21 mmShielded ZZ6311 ZZD 120 mm · B 29 mmNon-contact sealed6811 2RUD 72 mm · B 9 mmNon-contact sealed6911 2RUD 80 mm · B 13 mmNon-contact sealed6011 2RUD 90 mm · B 18 mm