61904 6904-2RS Non-Standard Thin Wall Bearing

Both the 61904 and 6904-2RS non-standard thin-walled bearings are single-row deep groove ball bearings made of chrome steel. They feature high precision and low noise characteristics. The 6904-2RS is equipped with double-sided seals for effective dust protection. Both bearings are suitable for equipment with high space requirements, such as precision instruments and small motors.

Technical parameter:

The structural features of non-standard thin-walled bearings 61904 and 6904-2RS primarily include the following aspects:

Thin-walled design: Both inner and outer rings feature thin walls with a constant cross-section design, meaning the cross-sectional dimensions remain consistent throughout the entire circumference. This results in a lighter overall bearing weight while maintaining necessary strength and rigidity, making them suitable for use in space-constrained environments.

Deep Groove Ball Structure: Both are single-row deep groove ball bearings. The raceway design enables the bearings to withstand both radial and axial loads while maintaining low friction, allowing for higher rotational speeds.

Sealing Structure: The 6904-2RS features dual-sided seals, where “2RS” indicates contact rubber sealing lips on both sides. This effectively prevents grease leakage and contaminant ingress. In contrast, the 61904 typically has an open structure without seals.

Cage Structure: Stainless steel cages are commonly used to ensure stable bearing operation.