NTN single-row radial ball bearing · live catalog page 3
6311ZN
Exact live NTN Bearing Finder row with dimensional and load-rating evidence.
Published bearing data
Dimensions and load ratings
- Item number
- 6311ZN
- Bore d
- 55 mm / 2.1654 in
- Outside diameter D
- 120 mm / 4.7244 in
- Width B
- 29 mm / 1.1417 in
- Corner radius r
- 2 mm / 0.0787 in
- Static load rating
- 45,000 N / 10,100 lbf
- Dynamic load rating
- 79,500 N / 17,870 lbf
- Published row text
- 6311ZN | N/A 2.1654 in 55.000 mm | N/A 4.7244 in 120.000 mm | N/A 1.1417 in 29.000 mm | N/A 0.0787 in 2.000 mm | N/A 10100 lbf 45000 N 45.00 kN | N/A 17870 lbf 79500 N 79.50 kN
Verification boundary
What still needs to match
Exact suffixConfirm enclosure, seals/shields, internal clearance, precision class, cage, and material.
FitVerify shaft and housing tolerances, shoulders, fillets, and installation method.
DutyCheck speed, lubrication, temperature, contamination, radial/axial loading, and expected life.
Current dataConfirm the exact item in NTN Bearing Finder before ordering.
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