SKF 6330 M C3 Ball Bearing 150x320x65

Industrial Applications

The SKF 6330 M C3 deep groove ball bearing is designed for demanding industrial applications where reliability, load capacity, and long service life are essential. This bearing is commonly used in heavy electric motors, industrial gearboxes, pumps, fans, compressors, conveyors, and large rotating machinery. Thanks to its increased internal clearance C3, the bearing performs reliably under thermal expansion and elevated operating temperatures. It is well suited for use as part of a complete bearing unit or in combination with a properly selected bearing housing.

Key Advantages of the 6330 M C3 Bearing

This ball bearing features a solid brass cage (designation M), which ensures excellent mechanical strength, stable ball guidance, and resistance to wear under continuous operation. The deep groove design allows the bearing to carry high radial loads as well as moderate axial loads in both directions. Low rolling resistance contributes to reduced energy losses and smooth, quiet operation, supporting high durability and extended maintenance intervals in industrial systems.

Technical Specifications

• Bearing type: Single-row deep groove ball bearing

• Designation: 6330 M C3

• Bore diameter: 150 mm

• Outside diameter: 320 mm

• Width: 65 mm

• Internal clearance: C3

• Cage: Brass (M)

• Manufacturer: SKF

• Load capacity: Radial and axial loads

• Typical use: Heavy-duty industrial machinery

Main Description

The SKF 6330 M C3 150x320x65 deep groove ball bearing is engineered for heavy-duty industrial environments where stable performance and long-term reliability are critical. Its increased C3 internal clearance compensates for thermal expansion of shafts and housings, making it ideal for machines operating at higher speeds or elevated temperatures. Precision-ground raceways ensure uniform load distribution and smooth rotation, even under demanding operating conditions.

The robust brass cage enhances bearing strength and durability, particularly in applications involving continuous operation or variable loads. This design reduces the risk of premature wear and supports consistent performance over extended service life. The open bearing construction allows flexible lubrication strategies, tailored to the specific requirements of industrial equipment.

As a versatile component, the SKF 6330 M C3 bearing is widely used both as a replacement part and in new machine designs. It is valued for its predictable behavior, dimensional accuracy, and ability to maintain operational stability in complex mechanical systems. When high load capacity, operational safety, and long-term efficiency matter, this bearing is a proven and reliable choice for industrial professionals.

FAQ - Frequently Asked Questions

What does C3 internal clearance mean?
C3 indicates increased internal clearance, recommended for applications where higher operating temperatures or thermal expansion are expected.

Is the SKF 6330 M C3 suitable for continuous operation?
Yes, the brass cage and C3 clearance make it suitable for continuous, heavy-duty industrial use.

Can this bearing handle axial loads?
Yes, it can carry radial loads and moderate axial loads in both directions.

Is this bearing compatible with bearing housings?
Yes, it is commonly used as part of a bearing unit together with an appropriate bearing housing.

Which industries typically use this bearing?
Heavy industry, power generation, machine manufacturing, and industrial drive systems.