Self-Aligning Ball Bearing 1209 SK NTN 45x85x19

Main Description

The 1209 SK NTN self-aligning ball bearing 45x85x19 is a double-row bearing with a tapered bore, designed for applications where shaft misalignment and flexible mounting are required.

Within the self-aligning ball bearings category, the 1209 SK NTN provides a reliable solution for systems exposed to alignment errors and shaft deflection. The spherical outer raceway allows automatic alignment between the shaft and housing, reducing stress and extending bearing life. The SK tapered bore design enables mounting on adapter sleeves, offering flexibility in installation and easy adjustment to different shaft configurations.

The 45x85x19 size is widely used in medium-duty industrial systems where stable operation and mounting versatility are essential.

Construction and Design

The 1209 SK NTN bearing is engineered for durability and adaptability.

Key design features:

• double-row self-aligning ball bearing
• spherical outer ring raceway for misalignment compensation
• tapered bore (SK) for adapter sleeve mounting
• high-quality bearing steel for long service life
• cage ensuring stable and smooth operation

This design ensures reliable performance even under imperfect alignment conditions.

Industrial Applications

The 1209 SK NTN bearing is suitable for applications requiring misalignment compensation and flexible mounting.

Typical applications include:

• conveyor systems and material handling
• agricultural machinery
• industrial equipment and production lines
• drive systems and mechanical assemblies
• machinery exposed to vibration and shaft deflection

The tapered bore allows easy installation and adjustment in various configurations.

Technical Parameters

• type: self-aligning ball bearing
• model: 1209 SK NTN
• inner diameter: 45 mm (tapered bore)
• outer diameter: 85 mm
• width: 19 mm
• design: double-row
• bore type: tapered (SK)
• material: bearing steel
• operating characteristics: misalignment compensation, stable operation

Operational Advantages

The 1209 SK NTN bearing offers several benefits:

• automatic compensation of shaft misalignment
• flexible mounting using adapter sleeves
• reduced stress on surrounding components
• extended service life
• stable operation under vibration

This makes it a reliable solution for industrial systems where alignment conditions are not ideal.

FAQ

What does SK mean in 1209 SK NTN?
It indicates a tapered bore for mounting on adapter sleeves.

Is this bearing self-aligning?
Yes, it compensates for shaft misalignment automatically.

Can it be used in industrial applications?
Yes, it is widely used in machinery and equipment.

Is it suitable for shaft deflection?
Yes, it performs well in such conditions.

Where is this bearing typically used?
In conveyors, machinery, and industrial systems.