NTN single-row radial ball bearing · live catalog page 3
6321ZN
Exact live NTN Bearing Finder row with dimensional and load-rating evidence.
Published bearing data
Dimensions and load ratings
- Item number
- 6321ZN
- Bore d
- 105 mm / 4.1339 in
- Outside diameter D
- 225 mm / 8.8583 in
- Width B
- 49 mm / 1.9291 in
- Corner radius r
- 3 mm / 0.1181 in
- Static load rating
- 153,000 N / 34,500 lbf
- Dynamic load rating
- 204,000 N / 45,860 lbf
- Published row text
- 6321ZN | N/A 4.1339 in 105.000 mm | N/A 8.8583 in 225.000 mm | N/A 1.9291 in 49.000 mm | N/A 0.1181 in 3.000 mm | N/A 34500 lbf 153000 N 153.00 kN | N/A 45860 lbf 204000 N 204.00 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.
Related NTN bearings