The SD-UU Series refers to a common and standardized type of metric linear ball bushing (linear bearing). It is characterized by its simple cylindrical shape, which is the most fundamental form of a linear bearing. The outer ring is typically made of bearing steel, and the bearing is pre-lubricated. The "UU" suffix often specifically denotes a bearing that comes equipped with rubber seals on both sides to effectively retain grease and prevent the ingress of contaminants like dust and chips. SD-UU bearings are designed to slide over a hardened and ground shaft (acting as the guide rail), providing low-friction linear motion. They are widely used due to their versatility, cost-effectiveness, and availability.
| Inquiry | Bearing Number | Principal dimensions （mm) | Weight(Kg) | ||
|---|---|---|---|---|---|
| d | D | B | |||
| 系列 | d (mm) | D (mm) | B (mm) | ||
| SD-UU Series | 20 | 47 | 14 | ||
| SD-UU Series | 30 | 62 | 17 | ||
| SD-UU Series | 40 | 72 | 17 | ||
| SD-UU Series | 50 | 90 | 20 | ||
| SD-UU Series | 60 | 100 | 20 | ||
| SD-UU Series | 70 | 110 | 21 | ||
| SD-UU Series | 80 | 125 | 22 | ||
| SD-UU Series | 90 | 140 | 24 | ||
| SD-UU Series | 100 | 150 | 25 | ||
