Deep Groove Ball Bearing - Double Shielded, Single Row (628/4-2Z)
• Number of Raceway Ring Rows : Single Track
• Customs tariff — weight per : 1
• Bore shape : Cylindrical
• Customs tariff — weight unit : kg
• Designator cover / seal : Contact-free covers on both sides made of sheet steel
628/4-2Z SKF Deep Grooved Ball Bearing 4x9x3.5 Shielded
Deep Groove Ball Bearings are the most common bearing type found in a wide variety of applications. Versatile and robust they are available in a wide range of sizes and options including seals, shields and special clearance for high speed applications. The main types are:
- Open - Bearing without seals or shields, suitable for applications where lubricant will constantly flow through them i.e. gearboxes.
- Metal Shields - Bearings fitted with steel shields and lubricated for life.
- Rubber Seals - Bearings fitted with steel reinforced rubber contact seals which provide a better seal but add friction so are unsuitable for high speed applications, lubricated for life.