| Part Number | 684 |
| Bearing type | BALL |
| Structure | Single Row |
| Load Direction | Radial |
| Seal type | Open |
| Bore diameter(d) | 4mm |
| Outer diameter(D) | 9mm |
| Width(B) | 2.5mm |
| 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(higher grade available) |
| Clearance | C0(other clearance available) |
| BALL SIZE(mm) | 1.588 mm |
| BALL QTY | 7 |
| lubrication | grease(oil available) |
| Temperature Range | -30℃~130℃ |
| weight(g) | 0.65 |
| ISO9001:2015 | PASSED |
| REACH | PASSED |
| ROHS | PASSED |
| Dynamic Load Rating (Cr) | 545 N |
| Static Load Rating (Cor) | 182 N |
Runstar Bearing Manufacturing Co.;Ltd is a professional manufacturer of miniature ball bearing and thrust ball bearing,we have passed ISO9001:2015,Reach and RoHs.
BEARING INTERCHANGE
| RUNSTAR | NMB | NTN | ADR | GRW | EZO | TIMKEN |
| 684 | L-940 | 684 | AX4 | 684 | 684 |
