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SKF 6309 Open Deep Groove Ball Bearing
The SKF 6309 is an open single row deep groove ball bearing designed for efficient shaft support in industrial rotating machinery. Its deep raceway design accommodates radial loads and axial loads in both directions while supporting smooth rotation with low friction. The bearing is intended for assemblies requiring the 6309 dimensions and normal radial internal clearance.
Design and Construction
The SKF 6309 features a single row of steel balls running between deep raceway grooves. A sheet metal cage separates and guides the rolling elements during operation.
Its bearing steel construction provides strength and effective load support. With dimensions of 45x100x25mm, the bearing has a substantial cross section compared with the 6209 series while retaining the same 45mm bore.
Open Design and Internal Clearance
The bearing features an open design without seals or shields. This allows direct grease or oil lubrication 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 necessary to protect against contamination and lubricant loss.
Applications
The SKF 6309 can be considered for industrial rotating equipment where its dimensions and operating characteristics meet the machinery requirements.
Electric motors
Industrial pumps
Fans and ventilation systems
Conveyor drive assemblies
Gearboxes and mechanical transmissions
General industrial machinery
Benefits
The SKF 6309 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 provides 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 required.
Bearing Selection
Before purchasing, confirm that the 45x100x25mm 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 or integrated sealing is required, an appropriate SKF 6309/C3 or sealed or shielded variant may be more suitable.
