15 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 |
|---|---|---|---|
| DDT-1680 | MinebeaMitsumi (NMB) | — | — |
| Part number | Manufacturer | C | Differs from this part |
|---|---|---|---|
| DDL-1680DD | MinebeaMitsumi (NMB) | 1.6 kN | Type: Deep groove ball — this part: Thrust Seal: 2RS contact seal — this part: Open |
| DDL-1680HH | MinebeaMitsumi (NMB) | 1.6 kN | Type: Deep groove ball — this part: Thrust Seal: 2Z shield — this part: Open |
| DDLF-1680HH | MinebeaMitsumi (NMB) | 1.6 kN | Type: Deep groove ball — this part: Thrust Seal: 2Z shield — this part: Open |
| L-1680DD | MinebeaMitsumi (NMB) | 1.6 kN | Type: Deep groove ball — this part: Thrust Seal: 2RS contact seal — this part: Open |
| L-1680KK | MinebeaMitsumi (NMB) | 1.6 kN | Type: Deep groove ball — this part: Thrust |
| LF-1680HH | MinebeaMitsumi (NMB) | 1.6 kN | Type: Deep groove ball — this part: Thrust Seal: 2Z shield — this part: Open |
| LNR-1680DD | MinebeaMitsumi (NMB) | 1.6 kN | Type: Deep groove ball — this part: Thrust Seal: 2RS contact seal — this part: Open |
| LNR-1680KK | MinebeaMitsumi (NMB) | 1.6 kN | Type: Deep groove ball — this part: Thrust |
| 628/8-2RS1 | NTN | 1.3 kN | Type: Deep groove ball — this part: Thrust Seal: 2RS contact seal — this part: Open |
| 628/8-2RS1/W64 | NTN | 1.3 kN | Type: Deep groove ball — this part: Thrust Seal: 2RS contact seal — this part: Open |
| 628/8-2Z | NTN | 1.3 kN | Type: Deep groove ball — this part: Thrust Seal: 2Z shield — this part: Open |
| W 628/8-2RS1 | NTN | 0.7 kN | Type: Deep groove ball — this part: Thrust Seal: 2RS contact seal — this part: Open |
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