NTN single-row radial ball bearing · live catalog page 4
6903ZNC3
Exact live NTN Bearing Finder row with dimensional and load-rating evidence.
Published bearing data
Dimensions and load ratings
- Item number
- 6903ZNC3
- Bore d
- 17 mm / 0.6693 in
- Outside diameter D
- 30 mm / 1.1811 in
- Width B
- 7 mm / 0.2756 in
- Corner radius r
- 0.3 mm / 0.0118 in
- Static load rating
- 2,580 N / 580 lbf
- Dynamic load rating
- 5,150 N / 1,150 lbf
- Published row text
- 6903ZNC3 | N/A 0.6693 in 17.000 mm | N/A 1.1811 in 30.000 mm | N/A 0.2756 in 7.000 mm | N/A 0.0118 in 0.300 mm | N/A 580 lbf 2580 N 2.58 kN | N/A 1150 lbf 5150 N 5.15 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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