A Complete Guide to SKF Bearing Clearance Classes: C2, C0, C3, C4, C5

Bearing internal clearance directly influences vibration, heat, and operating stability.

• C2: Less than standard clearance, used for high rigidity and precise positioning
• C0: Standard clearance, suitable for general-purpose applications
• C3: Larger than standard, commonly used in electric motors, fans, and pumps
• C4: Large clearance for high temperature or heavy-load conditions
• C5: Extra-large clearance for severe conditionsSKF engineers select clearance classes based on operating temperature, load type, and rotational speed.