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SKF 6208/C3 Open Deep Groove Ball Bearing
The SKF 6208/C3 is an open single row deep groove ball bearing designed for efficient shaft support and smooth rotation. It accommodates radial loads and axial loads in both directions while maintaining low friction. Its increased internal clearance makes it suitable for rotating assemblies where C3 clearance is specified.
Design and Construction
The SKF 6208/C3 features a single row of steel balls running between deep raceway grooves. A sheet metal cage separates and guides the rolling elements during rotation.
Its bearing steel construction provides effective load support under suitable operating conditions. With dimensions of 40x80x18mm, the bearing offers a smaller outside diameter and narrower profile than the 6308 series while retaining the same 40mm bore.
C3 Internal Clearance and Open Design
The bearing features C3 radial internal clearance, which is greater than normal clearance. This helps compensate for reductions in operating clearance caused by interference fits and temperature differences between the bearing rings.
Its open design without seals or shields allows grease or oil to reach the rolling elements directly. Suitable external sealing may be necessary to protect against contamination and lubricant loss.
Applications
The SKF 6208/C3 can be considered for rotating machinery where its dimensions and increased internal clearance meet the operating requirements.
Electric motors
Industrial pumps
Fans and ventilation equipment
Conveyor drive assemblies
Mechanical transmissions
General industrial machinery
Benefits
The SKF 6208/C3 offers several practical advantages.
C3 Internal Clearance: Helps accommodate reductions in operating clearance caused by shaft fits and temperature differences.
Low Friction: Supports smooth rotation while helping reduce mechanical energy losses.
Combined Load Support: Accommodates radial loads and axial loads in both directions.
Compact Bearing Profile: Provides a smaller outside diameter than the 6308 series for assemblies designed around the 6208 dimensions.
High Speed Capability: Its deep groove construction supports relatively high rotational speeds with suitable lubrication.
Flexible Lubrication: Open construction allows direct grease or oil lubrication.
Bearing Selection
Before purchasing, confirm that the 40x80x18mm dimensions and C3 radial internal clearance match your equipment requirements.
Check operating loads and speeds alongside shaft and housing fits. Lubrication and contamination exposure should also be considered. If normal internal clearance is required, the SKF 6208 may be more suitable. For equipment requiring integrated sealing, check the corresponding sealed or shielded SKF 6208 variants.
