| Part Number | FR166ZZ | 
| Bearing type | BALL | 
| Structure | Single Row | 
| Load Direction | Radial | 
| Seal type | Shields | 
| Bore diameter(d) | 3/16″︱4.762mm | 
| Outer diameter(D) | 3/8″︱9.525mm | 
| Flange OD(Df) | 0.422″︱10.7188mm | 
| Width(B) | 1/8″︱3.175mm | 
| Flange thickness (Bf) | 0.031″︱0.7874mm | 
| radius (rs) | 0.1mm | 
| 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 | 8 | 
| lubrication | grease(oil available) | 
| Temperature Range | -30℃~130℃ | 
| weight(g) | 0.97 | 
| ISO9001:2015 | PASSED | 
| REACH | PASSED | 
| ROHS | PASSED | 
| Dynamic Load Rating (Cr) | 605N | 
| Static Load Rating (Cor) | 218N |