| Part Number | MR128ZZ |
| Bearing type | BALL |
| Structure | Single Row |
| Load Direction | Radial |
| Seal type | Shields |
| Bore diameter(d) | 8mm |
| Outer diameter(D) | 12mm |
| Width(B) | 3.5mm |
| 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) | 1.2mm |
| BALL QTY | 12 |
| lubrication | grease(oil available) |
| Temperature Range | -30℃~130℃ |
| weight(g) | 0.99 |
| ISO9001:2015 | PASSED |
| REACH | PASSED |
| ROHS | PASSED |
| Dynamic Load Rating (Cr) | 462 N |
| Static Load Rating (Cor) | 169 N |
Mini bearings are one of the classifications under ball bearings .Mini bearings is composed of outer ring, inner ring, steel ball, cage,shields or rubber seals etcs. There are also three types for mini bearings: open type, with shields and with rubber seal. In Runstar Bearing, mini bearings are usually referred to a miniature ball bearings from a bore diameter of 1mm to 10mm. Runstar is a professional mini bearings manufacturer since 2007,certified ISO9001:2015. The mini bearings from Runstar has characteristics of high precision,low friction and long life. Most of mini bearings from Runstar are widely used in fields of precision instrument,home application,medical device,massage equipment,sports equipment,textile machinery,woodworking machinery,motor,power tool,water pump,air compressor,fishing reel and Yoyo etcs.
BEARING INTERCHANGE
| RUNSTAR | NMB | NTN | ADR | GRW | EZO | TIMKEN |
| MR128zz | L-1280zz | 637/8zz | MR128zz |
