SKF 6203 C4 17x40x12 Ball Bearing

Technical specification & design

The SKF 6203 C4 is a single-row deep-groove ball bearing with bore 17 mm, outside diameter 40 mm and width 12 mm.
The designation “C4” refers to a radial internal clearance class greater than standard C3, enabling better accommodation of thermal expansion, shaft deflection or slight misalignment in industrial applications.
Constructed with high-quality bearing steel and a sheet-metal cage, this unit is engineered for high durability, stable operation under radial loads and reduced risk of early fatigue in demanding conditions.

Industrial applications & B2B benefits

This deep-groove ball bearing is ideal for industrial applications—especially in electric motors, gear drives, conveyor systems, bearing housing units, and other high-throughput machinery.
Key benefits for B2B customers:

• High durability and stable performance, decreasing downtime and maintenance costs.

• The C4 clearance allows for enhanced tolerance of thermal and mechanical expansion, making it suitable for harsher operating environments and heavier industrial workloads.

• Standard size simplifies procurement and integration into bearing housings or units, facilitating replacement and supply chain logistics.

• Renowned brand and series (SKF 6203) ensure compatibility, trust and availability for bulk industrial orders.

By integrating this bearing into your assemblies, you obtain a robust component suited for demanding mechanical systems, offering reliable support for radial loads and enabling optimized performance of bearing housing solutions.

FAQ

Q: What does the clearance class “C4” mean for the bearing?
A: The C4 classification indicates a larger radial internal clearance compared to standard (C0) or C3 bearings. This increased clearance permits better accommodation of thermal expansion, mechanical misalignment or shaft deflection, which is beneficial in industrial settings.

Q: Can this 17x40x12 mm bearing handle axial loads?
A: The bearing is primarily designed for radial loads, but because of the deep-groove geometry it can support limited axial loads in both directions when mounted appropriately.

Q: Where is the SKF 6203 C4 commonly used?
A: It is widely applied in industrial environments such as electric motors, gearboxes, conveyor drives, bearing units, and other systems requiring durable units with higher clearance and long service life.

Q: Why choose the C4 version instead of standard C0 or C3?
A: In applications with elevated operating temperatures, heavier loads, or increased clearance needs (e.g., due to thermal expansion or slight misalignment), the C4 version provides improved reliability and longevity.