| Part Number | 691 |
| Bearing type | BALL |
| Structure | Single Row |
| Load Direction | Radial |
| Seal type | open |
| Bore diameter(d) | 1mm |
| Outer diameter(D) | 4mm |
| Width(B) | 1.6mm |
| material | Chrome steel 52100(Gcr15) |
| ring material | Chrome steel 52100(Gcr15) |
| cage material | 300 Series Stainless Steel |
| ball material | Chrome steel 52100(Gcr15) |
| shields material | 300 Series Stainless Steel |
| Grade | ABEC-1 |
| Clearance | C0 |
| BALL SIZE(mm) | 0.8mm |
| BALL QTY | 5 |
| lubrication | grease or oil |
| Temperature Range | -30℃~130℃ |
| weight(g) | 0.11 |
| ISO9001:2015 | PASSED |
| REACH | PASSED |
| ROHS | PASSED |
| Dynamic Load Rating (Cr) | 120 |
| Static Load Rating (Cor) | 30 |
BEARING INTERCHANGE
| RUNSTAR | NMB | NTN | ADR | GRW | EZO | TIMKEN |
| 691 | R-410 | 691 | 691 | 691 |
