SKF 61806-2RS1 Rubber Sealed Single Row Deep Groove Ball Bearing 30x42x7mm

The SKF 61806-2RS1 sealed thin section deep groove ball bearing is intended for compact rotating assemblies where a conventional bearing would require too much space around the shaft. Its ultra-slim 618 series construction has a radial cross-section of just 6mm, allowing designers to minimise housing size without reducing the shaft bore. The single row ball arrangement accommodates radial loading and limited axial forces in either direction, subject to its relatively modest load capacity. Published specifications for this bearing list a basic dynamic load rating of 4.1kN, a basic static load rating of 2.9kN and a limiting speed of 9,500rpm. These characteristics make careful load assessment important where shock loads, belt tension or frequent acceleration are present.

The 2RS1 double rubber contact seals retain factory grease and help prevent dust and moisture reaching the raceways, making the bearing useful in mechanisms without a separate relubrication arrangement. Contact sealing introduces additional friction compared with an open bearing, so operating speed and temperature should be considered together. Normal radial internal clearance requires correctly specified shaft and housing fits. Because the bearing rings are exceptionally thin, excessive interference or uneven housing support can distort the raceways and affect running performance. Accurate machining, suitable mounting tools and careful alignment are therefore essential when installing this bearing in space-restricted equipment.

Typical Applications:

Compact rotary positioning mechanisms

Lightly loaded automation assemblies

Precision indexing and handling equipment

Small industrial shaft support systems

Specialised machinery with narrow bearing housings