SKF 6312-2RS1 Rubber Sealed Single Row Deep Groove Ball Bearing 60x130x31mm

The SKF 6312-2RS1 sealed deep groove ball bearing is designed for demanding shaft-support applications where a 60mm bore must accommodate significant mechanical loading. Its 130mm outside diameter and 31mm width distinguish it from the smaller 6212 bearing, which measures 60 x 110 x 22mm. The larger 63 series cross-section provides greater load capacity, although the increased dimensions require a correspondingly sized housing and suitable shaft shoulders. Its single row deep groove raceways carry predominantly radial loads and accommodate axial forces in either direction within the bearing's rated limits. SKF specifies a basic dynamic load rating of 85.2kN and a basic static load rating of 52kN, supporting engineering calculations for fatigue life and stationary loading.

The 2RS1 rubber contact seals retain factory-applied grease and help prevent dust, dirt and moisture reaching the rolling elements. This is particularly advantageous in industrial equipment where relubrication access is restricted or a protected bearing arrangement is preferred. SKF lists a limiting speed of 3,400rpm for this contact-sealed configuration; actual operating suitability also depends on applied load, temperature and heat generated by seal friction. The standard 6312-2RS1 has normal (CN) radial internal clearance, unlike the 6312-2RS1/C3 variant, which provides greater initial clearance. Correct shaft and housing fits are therefore essential, especially where interference mounting and temperature differences reduce operating clearance. For reliable replacement, verify the complete designation, sealing arrangement and dimensional compatibility.

Typical Applications:

Heavy-duty industrial electric motor assemblies

Industrial centrifugal pumps and processing equipment

Conveyor drive shafts and pulley assemblies

Mechanical power transmission and gearbox systems

Agricultural and materials-handling machinery