Deep groove ball bearing SNR 6212F600, Outer diameter: 110 mm | Width: 22 mm | Inner diameter: 60 mm

TOPLINE deep groove ball bearing, radial contact, pressed steel cage, open, applications upto 350°C.

This deep groove ball bearing from the SNR brand was designed for smooth, low-noise and reliable rotation under extreme temperature conditions up to +350 °C. The open design provides excellent heat dissipation and allows direct access for maintenance. Ideally suited for high-temperature applications with high speeds, this bearing meets the requirements of dynamic and precise systems. It stands out for its robustness, versatility and energy-efficient performance.

Features:
The single-row ball bearing with a pressed steel cage belongs to the Topline series from SNR. It was specially designed for use at very high temperatures and has a special surface treatment of phosphating combined with a layer of molybdenum disulfide (MoS₂). This coating improves both corrosion protection and lubrication under severe thermal stress.

Please note: MoS₂ reacts with water and can form sulfuric acid – therefore this bearing should not be used in humid environments.

The bearing is unsealed, which minimizes frictional losses and increases mechanical efficiency, enabling low energy consumption and rapid spin-up. The radial internal clearance is greater than C5, providing greater freedom of movement between the rolling elements. This allows thermal expansions to be reliably compensated without impairing operational safety or rotational freedom. Thanks to the open design, operation at very high speeds is possible while providing excellent heat dissipation. The bearing is suitable for high radial loads as well as moderate axial forces in both directions.

Maintenance:
Regular maintenance is required to maintain performance. Due to the lack of seals, the bearing must be used in clean and dry environments. Periodic relubrication using a lubricant suited to both the operating temperature and the speed is necessary. The condition of the bearing should be continuously monitored, especially at high temperatures, to avoid premature wear.

Seal:
This model is open in design, i.e., without seals. This enables better cooling and easy access for lubrication, but makes the bearing more susceptible to contaminants such as dust, liquids or moisture. This design maximizes thermal and mechanical properties, but requires enhanced monitoring and consistent maintenance to extend the bearing’s service life.

Brand information:
SNR is a brand of the NTN Group and a globally recognized manufacturer of rolling bearings and mechanical solutions. Founded in France, SNR combines European expertise with Japanese innovation. The company is present in many industrial sectors and is distinguished by its product quality, innovative capability and sustainable technical performance.

Strengths:
• Suitable for extreme temperatures up to +350 °C
• Phosphated surface with MoS₂ coating for optimized lubrication and high oxidation resistance
• Low starting torque for energy-efficient operation
• Suitable for very high speeds
• Open design for better cooling and maintenance access
• High radial load capacity and moderate axial load in both directions
• Quiet operation with low vibration
• Pressed steel cage for stability and long-lasting performance

Applications:
This bearing is ideal for plants operating at high temperature and low speed. Typical applications include oven conveyor belts, heat treatment equipment, and production lines for glass, ceramics or steel. It is also used in hot conveying systems, for example in powered gripper arms, conveyor chains or intensive drying installations. Its open design and resistance to extreme temperatures make it a reliable solution for stationary equipment exposed to thermal radiation.