JTEKT/Koyo deep groove ball bearing · Extremely light contact sealed
6808 2RD
Manufacturer-published boundary dimensions, basic load ratings, fatigue limit, and f0 factor.
Live manufacturer specification row
Published specifications
- Designation
- 6808 2RD
- Classification
- Extremely light contact sealed
- Bore d
- 40 mm
- Outside diameter D
- 52 mm
- Width B
- 7 mm
- Minimum corner radius r
- 0.3 mm
- Basic dynamic load rating Cr
- 6.15 kN
- Basic static load rating C0r
- 4.2 kN
- Fatigue load limit Cu
- 0.18 kN
- Factor f0
- 16.3
- Published row text
- 6808 2RD | 40 | 52 | 7 | 0.3 | 6.15 | 4.2 | 0.18 | 16.3
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 ZZ6808 ZZD 52 mm · B 7 mmShielded ZZ6908 ZZD 62 mm · B 12 mmShielded ZZ6008 ZZD 68 mm · B 15 mmShielded ZZ6208 ZZD 80 mm · B 18 mmShielded ZZ6308 ZZD 90 mm · B 23 mmNon-contact sealed6808 2RUD 52 mm · B 7 mmNon-contact sealed6908 2RUD 62 mm · B 12 mmNon-contact sealed6008 2RUD 68 mm · B 15 mm