SKF 61804-2RS1 Rubber Sealed Single Row Deep Groove Ball Bearing 20x32x7mm

The SKF 61804-2RS1 sealed thin section deep groove ball bearing is designed for compact rotating equipment where the available space around a 20mm shaft is limited. Its 618 series geometry provides a particularly small bearing cross-section, making it useful in lightweight mechanisms where a conventional 6004 or 6204 bearing would require a larger housing. The single row ball arrangement accommodates radial loads and limited axial forces in either direction, subject to the bearing's load capacity. Technical specifications include a basic dynamic load rating of 4.03kN, a basic static load rating of 2.32kN and a limiting speed of 13,000rpm. These figures make load assessment important, especially in equipment exposed to shock loading or significant belt tension.

The 2RS1 double rubber contact seals retain factory grease and help protect the raceways against dust, dirt and moisture. This enclosed lubrication arrangement is useful in compact machinery where external greasing facilities are impractical. Contact seals generate additional running resistance compared with open bearings, so operating speed and temperature must be considered during selection. Normal radial internal clearance also requires accurately controlled mounting fits. Because the bearing rings are exceptionally thin, excessive shaft interference or uneven housing support can distort the raceways and affect running performance. Careful alignment, accurately machined seats and correct installation methods are important for achieving reliable service.

Typical Applications:

Compact automation and robotic mechanisms

Precision rotary positioning equipment

Lightly loaded industrial shaft assemblies

Small measuring and inspection instruments

Specialised machinery with narrow bearing housings