87 other designations in the catalogue share this bore × outside diameter × width. Each was compared on the four fields every bearing row carries — Type, Seal, Clearance, Precision — as recorded, case- and separator-insensitively. All four agreeing puts a designation in the first list; anything else, a difference or a blank, puts it in the second with the fields named.
| Part number | Manufacturer | C | C0 |
|---|---|---|---|
| 6420.2ZR | FAG (Schaeffler) | 191.9 kN | 133.3 kN |
| 6420-2Z | NTN | 190.0 kN | 132.0 kN |
| 6420ZZ | NTN | 184.3 kN | 128.0 kN |
| 6320-2Z | NTN | 174.0 kN | 140.0 kN |
| 6320-Z | NTN | 174.0 kN | 140.0 kN |
| 6320 2ZJEM | NTN | 174.0 kN | 140.0 kN |
| 6320ZZ | NTN | 168.8 kN | 110.6 kN |
| Part number | Manufacturer | C | Differs from this part |
|---|---|---|---|
| N 320 ECM | NTN | 450.0 kN | Type: Cylindrical — this part: Deep groove ball Seal: Open — this part: 2Z shield |
| N 320 ECP | NTN | 450.0 kN | Type: Cylindrical — this part: Deep groove ball Seal: Open — this part: 2Z shield |
| NJ 320 ECJ | NTN | 450.0 kN | Type: Cylindrical — this part: Deep groove ball Seal: Open — this part: 2Z shield |
| NJ 320 ECJ/C3 | NTN | 450.0 kN | Type: Cylindrical — this part: Deep groove ball Seal: Open — this part: 2Z shield Clearance: C3 — this part: CN (Normal) |
| NJ 320 ECM | NTN | 450.0 kN | Type: Cylindrical — this part: Deep groove ball Seal: Open — this part: 2Z shield |
| NJ 320 ECM/C3 | NTN | 450.0 kN | Type: Cylindrical — this part: Deep groove ball Seal: Open — this part: 2Z shield Clearance: C3 — this part: CN (Normal) |
| NJ 320 ECM/C4VA301 | NTN | 450.0 kN | Type: Cylindrical — this part: Deep groove ball Seal: Open — this part: 2Z shield Clearance: C4 — this part: CN (Normal) |
| NJ 320 ECML/L4BC3 | NTN | 450.0 kN | Type: Cylindrical — this part: Deep groove ball Seal: Open — this part: 2Z shield Clearance: C3 — this part: CN (Normal) |
| NJ 320 ECP | NTN | 450.0 kN | Type: Cylindrical — this part: Deep groove ball Seal: Open — this part: 2Z shield |
| NU 320 ECJ | NTN | 450.0 kN | Type: Cylindrical — this part: Deep groove ball Seal: Open — this part: 2Z shield |
| NU 320 ECJ/C3 | NTN | 450.0 kN | Type: Cylindrical — this part: Deep groove ball Seal: Open — this part: 2Z shield Clearance: C3 — this part: CN (Normal) |
| NU 320 ECM | NTN | 450.0 kN | Type: Cylindrical — this part: Deep groove ball Seal: Open — this part: 2Z shield |
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