| Part Number | R188-2RS | 
| Bearing type | BALL | 
| Structure | Single Row | 
| Load Direction | Radial | 
| Seal type | Rubber seals | 
| Bore diameter(d) | 1/4″︱6.35mm | 
| Outer diameter(D) | 1/2″︱12.7mm | 
| Width(B) | 3/16″︱4.762mm | 
| 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) | 1.588mm | 
| BALL QTY | 10 | 
| lubrication | grease(oil available) | 
| Temperature Range | -30℃~130℃ | 
| weight(g) | 1.6 | 
| ISO9001:2015 | PASSED | 
| REACH | PASSED | 
| ROHS | PASSED | 
| Dynamic Load Rating (Cr) | 920 N | 
| Static Load Rating (Cor) | 355  N |