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SKF 6308 Open Deep Groove Ball Bearing
The SKF 6308 is an open single row deep groove ball bearing designed for smooth rotation and effective support of rotating shafts. Its deep raceway construction accommodates radial loads and axial loads in both directions while maintaining low friction. It is suitable for assemblies requiring the standard 6308 dimensions and normal radial internal clearance.
Design and Construction
The SKF 6308 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 strength and effective load support under suitable operating conditions. With dimensions of 40x90x23mm, the bearing offers a larger cross section than the 6208 series while retaining the same 40mm bore.
Open Design and Internal Clearance
The bearing features an open design without seals or shields. This allows grease or oil to reach the rolling elements directly and makes it suitable for machinery with an appropriate lubrication system.
It has normal radial internal clearance for applications where standard clearance is specified. Suitable external sealing may be required to protect the bearing against contamination and lubricant loss.
Applications
The SKF 6308 can be considered for rotating machinery where its dimensions and operating characteristics meet the equipment requirements.
Electric motors
Industrial pumps
Fans and ventilation equipment
Conveyor drive assemblies
Gearboxes and mechanical transmissions
General industrial machinery
Benefits
The SKF 6308 offers several practical advantages.
Low Friction: Supports smooth rotation while helping reduce mechanical energy losses.
Combined Load Support: Accommodates radial loads and axial loads in both directions.
Robust Construction: Its deep raceway design and substantial cross section provide effective load support under suitable operating conditions.
High Speed Capability: Supports relatively high rotational speeds with appropriate lubrication.
Flexible Lubrication: Open construction allows direct grease or oil lubrication.
Normal Internal Clearance: Provides the standard clearance arrangement for equipment where normal clearance is specified.
Bearing Selection
Before purchasing, confirm that the 40x90x23mm dimensions and normal radial internal clearance match your equipment requirements.
Operating loads and speeds should be checked alongside shaft and housing fits. Lubrication and contamination exposure should also be considered. If increased internal clearance is required, the SKF 6308/C3 may be more suitable. For applications requiring integrated sealing, check the corresponding sealed or shielded SKF 6308 variants.
