SKF 3306 A/C3 Angular Contact Ball Bearing 30x72x30.2

Design and Construction

SKF 3306 A/C3 30x72x30.2 is a double row angular contact ball bearing designed to carry combined radial and axial loads in both directions within compact drive systems. As part of the SKF angular contact ball bearings range, this model offers increased axial stiffness without the need to mount two single row bearings in a paired arrangement.

The bearing features two rows of balls arranged with a defined contact angle, enabling efficient transmission of axial forces while maintaining radial load capacity. The A designation indicates optimized internal geometry for improved load distribution and smoother running characteristics. The C3 internal clearance provides increased radial clearance, suitable for higher operating temperatures and interference fit mounting conditions.

The double row design simplifies assembly and reduces axial space compared to matched single row configurations.

Technical Parameters

Technical data suitable for snippet extraction:

Type: double row angular contact ball bearing
Brand: SKF
Designation: 3306 A/C3
Bore diameter: 30 mm
Outer diameter: 72 mm
Width: 30.2 mm
Internal clearance: C3
Contact angle: angular contact

Common long tail search phrases include: SKF 3306 A C3 30x72x30.2 bearing, angular contact bearing 30 mm shaft, SKF 30x72x30.2 gearbox bearing, 3306 A/C3 technical dimensions.

Industrial Applications

The SKF 3306 A/C3 30x72x30.2 angular contact ball bearing is widely used in:

• Medium power gearboxes

• Industrial pumps

• Compressors

• Electric motors

• Packaging machinery

In systems where axial loads act in both directions and precise shaft guidance is required, this double row angular contact ball bearing provides a compact and rigid solution. The 30 mm bore size makes it suitable for mid size drive assemblies and mechanical power transmission units.

Operational Advantages

• Supports axial loads in both directions

• Increased axial rigidity compared to deep groove ball bearings

• Optimized internal geometry in version A

• C3 clearance for thermal stability

• Reliable SKF manufacturing precision

Within the SKF angular contact ball bearings category, the 3306 A/C3 30x72x30.2 model bridges the gap between smaller 3200 series variants and larger heavy duty configurations used in high load industrial machinery.

Main Description

SKF 3306 A/C3 30x72x30.2 is a double row angular contact ball bearing engineered to support combined radial loads and axial loads in both directions in compact industrial drive systems.

In the structure of SKF angular contact ball bearings, the 3306 A/C3 model serves as a versatile solution for applications requiring high axial stiffness without the complexity of mounting matched single row bearings. The two rows of balls arranged at an angle ensure efficient load transfer and stable shaft positioning under dynamic operating conditions.

The 30x72x30.2 mm configuration is frequently selected for gear driven machinery, industrial pumps and electric motor assemblies where fluctuating axial forces occur. The optimized A internal design improves load distribution across the raceways, contributing to extended service life and consistent performance.

C3 internal clearance is particularly beneficial in environments with elevated temperatures or tight shaft fits, allowing for proper internal operating clearance during service. For maintenance teams and system designers, SKF 3306 A/C3 30 mm bore bearing offers predictable behavior, high rigidity and simplified installation compared to paired bearing arrangements.

SKF 3306 A/C3 angular contact bearing is therefore a reliable component in industrial sectors demanding compact design, axial stability and long term operational durability.

FAQ

Does SKF 3306 A/C3 support axial loads in both directions?
Yes, as a double row angular contact ball bearing it can carry axial loads in both directions.

What does the A designation mean in 3306 A/C3?
It indicates optimized internal geometry for improved load distribution and running performance.

When should C3 clearance be selected?
C3 is recommended for higher operating temperatures or interference fit mounting conditions.

Can 3306 A/C3 replace two single row angular contact bearings?
In many applications, yes, because the double row design supports axial loads in both directions within one bearing unit.