Deep Groove Ball Bearings SKF 61801 -2RS1

The SKF 61801 -2RS1 deep groove ball bearing has compact dimensions of 12 × 21 × 5 mm and is protected against dirt and moisture by a ground seal on both sides.

The SKF 61801 -2RS1 deep groove ball bearing is a single-row rolling bearing without a flange or groove on the outer ring, designed for installation spaces with a small radial cross-section. With a bore of 12 mm, an outside diameter of 21 mm and a narrow width of 5 mm, this model primarily accommodates radial loads. The rings and rolling elements are made from standard bearing steel 100Cr6, enabling the bearing to withstand the mechanical stresses of industrial use.

In which installation scenarios is the deep groove ball bearing 61801 -2RS1 used?

Designs with very limited installation space utilise this narrow bearing wherever the shaft diameter and housing wall are close together. The single-row design primarily accommodates radial forces and ensures that rotating shafts run with uniform concentricity. A sheet steel cage maintains the balls at a defined distance and ensures even load distribution across the raceway. As the bearing has no electrical insulation, it is designed for standard drives without electrical insulation requirements.

What is the function of the double-sided 2RS1 seal?

The designation 2RS1 stands for a double-sided sliding seal, whose sealing lips rest against the inner ring and reduce the ingress of dirt or moisture. At the same time, the sealing element helps to retain the grease inside the raceways. Designed for standard radial bearing clearance and manufactured to tolerance class P0 or ABEC 1, this version covers an operating temperature range from –20 to +120 degrees.