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SKF 6303/C3 Open Deep Groove Ball Bearing
The SKF 6303/C3 is an open single row deep groove ball bearing designed for efficient shaft support and smooth rotation. Its deep raceway construction accommodates radial loads and axial loads in both directions. The increased internal clearance makes it particularly useful in assemblies where interference fits or temperature differences may reduce clearance during operation.
Design and Construction
The SKF 6303/C3 features steel balls running between deep raceway grooves. A sheet metal cage separates and guides the rolling elements to support efficient rotation.
Its bearing steel construction provides strength and effective load support. With dimensions of 17x47x14mm, it offers a more substantial bearing cross section than the 6203 and 6003 series with the same 17mm 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 tight shaft 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. External sealing may be needed to protect against contamination and prevent lubricant loss.
Applications
The SKF 6303/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
Gearboxes and mechanical drive assemblies
Conveyor equipment
General industrial machinery
Benefits
The SKF 6303/C3 offers several practical advantages.
C3 Internal Clearance: Helps accommodate reductions in operating clearance caused by interference fits and temperature differences.
Low Friction: Supports smooth shaft rotation while helping reduce frictional energy losses.
Combined Load Support: Accommodates radial loads and axial loads in both directions.
Robust Construction: The 6303 bearing series provides a substantial cross section for effective load support.
High Speed Capability: Its deep groove design 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 17x47x14mm dimensions and C3 radial internal clearance match your equipment specifications.
Check operating loads and speeds alongside shaft and housing fits. Lubrication and contamination exposure should also be considered. If normal internal clearance or integrated sealing is required, another SKF 6303 variant may be more suitable.
