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The SKF 6318-2RS1 sealed deep groove ball bearing is engineered for sizeable rotating assemblies where load capacity and dimensional stability are essential. Its 90mm bore, 190mm outside diameter and 43mm width provide a substantial bearing cross-section for supporting industrial shafts. Compared with the 6218 series, which has a 160mm outside diameter and 30mm width, the larger 6318 requires more installation space but offers increased load-carrying capacity. The single row deep groove raceways accommodate predominantly radial loads together with axial forces in either direction, within the bearing's rated limits. SKF specifications list a basic dynamic load rating of 151kN and a basic static load rating of 108kN. These values are important when evaluating fatigue life, stationary loads and the demands of heavily loaded power transmission equipment.
The 2RS1 rubber contact seals retain factory-applied grease and help restrict the ingress of dust, dirt and moisture. This sealed arrangement can reduce routine lubrication requirements in enclosed machinery, although operating conditions must remain compatible with the grease and sealing system. SKF lists a limiting speed of 2,400rpm, with continuous operating suitability dependent on load, temperature and contact seal friction. Normal (CN) radial internal clearance must be considered alongside shaft interference fits and thermal expansion; applications needing increased clearance may require a C3 variant instead. With an approximate mass of 5.08kg, the bearing also demands suitable handling and mounting equipment. For replacement work, confirm the full designation, housing dimensions and shaft tolerances before installation.
Typical Applications:
Large industrial electric motors and drive systems
Heavy-duty conveyor and material handling machinery
Industrial pumps and fluid transfer equipment
Mechanical power transmission and gearbox assemblies
Processing plant machinery with 90mm shaft supports
