SKF 628/6-2RS1 Rubber Sealed Single Row Deep Groove Ball Bearing 6x13x5mm

The SKF 628/6-2RS1 miniature deep groove ball bearing provides rotational guidance for small mechanical assemblies requiring a 6mm bore and 13mm outside diameter. Its 5mm width offers a compact mounting arrangement while providing more axial space than the extra-thin 618/6 series. The single row deep groove raceways accommodate predominantly radial loads alongside axial forces in either direction, within the bearing's rated capacity. Published specifications give a basic dynamic load rating of 0.88kN and a basic static load rating of 0.35kN. These figures are particularly important when selecting bearings for miniature mechanisms, where small changes in loading can affect fatigue life. The narrow bearing section also requires careful attention to shaft alignment, fitting tolerances and housing support.

The 2RS1 sealing arrangement provides protection on both sides, helping reduce contamination in compact machinery where access for maintenance is limited. SKF-generated product data lists a limiting speed of 53,000rpm, although actual operating suitability depends on load, temperature, lubrication and installation conditions. The bearing uses standard bearing steel and has normal (CN) radial internal clearance. It is distinct from the stainless-steel W 628/6-2RS1, which has different published load and speed ratings. When fitting this miniature bearing, avoid transmitting mounting forces through the balls and ensure that shaft shoulders do not interfere with the seals. For replacement applications, check the complete designation and all three dimensions rather than selecting by bore diameter alone.

Typical Applications:

Miniature guide rollers and tracking assemblies

Precision instrument and measuring mechanisms

Small robotics and automation equipment

Compact pulley and belt-drive mechanisms

Light-duty shaft supports with 5mm-wide bearing seats