Deep groove ball bearing SKF 6308-2RS2/C4S0GJN7, Outer diameter: 90 mm | Width: 23 mm | Inner diameter: 40 mm

Ball bearings are essential mechanical components that reduce friction and support various loads in a wide range of industrial applications. Among them, deep groove ball bearings stand out for their versatility, ability to operate at high speeds, and low maintenance requirements.

This deep groove ball bearing is ideal for demanding environments with high temperatures. Designed with a C4 internal radial clearance, it effectively manages thermal expansion and ensures smooth operation at high speeds. The bearing rings are heat-treated for operating temperatures up to +150°C, which is also compatible with its lubricant. In addition, its two fluorinated rubber seals provide reliable protection against contaminants while retaining the lubricant.

Features:
This single-row rigid ball bearing is equipped with a sheet steel cage, offering high resistance to radial and axial loads. It features fluorinated rubber (FKM) friction seals with a sheet steel reinforcement, ensuring excellent sealing against dust, water, and chemical contaminants. The bearing is lubricated with a polyurea-thickened grease, NLGI 2 consistency, allowing for optimal operation between -30 and +150 °C. This bearing is permanently lubricated at the factory with a lubricant quantity exceeding the standard for improved performance. The C4 internal radial clearance ensures increased tolerance to thermal deformation and smooth rotation at high speeds. Additionally, the bearing rings are heat-treated for temperatures up to +150 °C.

Maintenance:
This bearing is designed to require minimal maintenance, even at temperatures up to 150°C. Its lubrication, which exceeds standard specifications, provides enhanced protection, especially since the seals prevent any leakage. They also protect the bearing from liquid and solid contaminants. However, it is advisable to regularly monitor operating parameters, such as temperature and vibration, to detect any abnormalities and prevent premature wear.

Sealing:
The double-lip seals made of fluorinated rubber (FKM) ensure effective sealing against dust, water, and contaminants. The combination of synthetic rubber and elastomer offers exceptional resistance to oils, greases, hydrocarbons, diluted acids, and high temperatures up to 200 °C. These seals provide excellent chemical compatibility, low compression set, and high durability, ensuring a long service life even in harsh environments.

Brand Information:
SKF has been a global leader in the manufacture of bearings and lubrication systems for over 100 years. Renowned for its advanced technologies and innovative solutions, the Swedish brand helps its customers improve equipment reliability, reduce maintenance costs, and optimize performance across numerous industrial sectors, ranging from energy and transportation to food processing and beyond.

Key Features:
- Double-lip fluorinated rubber seals providing effective protection against contaminants;
- Lubrication exceeding industry standards with polyurea grease, offering a temperature range of -30 to +150°C;
- C4 internal radial clearance for smooth rotation even at very high speeds;
- Thermally stabilized raceways for temperatures up to +150°C;
- Ability to withstand radial and axial loads in both directions;
- Robust design with a sheet steel cage for good resistance to peak loads.

Applications:
This bearing is ideal for industrial applications requiring optimal sealing and the ability to withstand high temperatures of up to +150°C. It is therefore suitable for electric motors, industrial pumps, fans, and material-handling systems such as conveyors, as well as for environments exposed to moisture—such as the food processing and maritime industries—and for household appliances where sealing is critical.