SKF 61901-2RS1 Rubber Sealed Thin Section Deep Groove Ball Bearing 12x24x6mm

Equivalent to 6901-2RS

The SKF 61901-2RS1 sealed thin-section deep groove ball bearing supports compact rotating equipment where a 12mm shaft requires a bearing smaller than a conventional 6001 or 6201 series arrangement. Its 619 series geometry provides a useful balance between a restricted housing diameter and load-carrying capability. The single row ball design accommodates radial loads and moderate axial forces in either direction, within its rated capacity. SKF catalogue specifications list a basic dynamic load rating of 2.91kN, a basic static load rating of 1.46kN and a sealed limiting speed of 19,000rpm. These values help assess suitability for miniature drives, guide rollers and precision mechanisms where operating loads must be matched to the bearing's compact construction.

The 2RS1 rubber contact seals retain factory grease and help prevent contamination of the rolling elements, making the bearing useful in assemblies without convenient relubrication access. Unlike open or non-contact sealed bearings, this contact-sealed design introduces additional running friction, so temperature and continuous speed should be evaluated together. Normal radial internal clearance requires correctly specified shaft and housing fits, particularly where interference mounting or temperature differences could reduce operating clearance. Accurate alignment and suitable mounting tools are important to avoid damaging the relatively thin bearing rings. For replacement work, confirm the complete SKF designation rather than selecting a bearing solely by its 12mm bore.

Typical Applications:

Miniature electric motors and compact drive units

Precision guide rollers and small handling mechanisms

Compact automation and actuator assemblies

Rotary measuring and inspection instruments

Light-duty mechanical transmission equipment