SKF 2308 ETN9 Self-Aligning Ball Bearing

Description

The SKF 2308 ETN9 is a double-row self-aligning ball bearing, designed to accommodate misalignment of the shaft relative to the housing. It has very low friction, making it suitable for running at higher speeds than any other type of rolling bearing. This component is part of SKF's Explorer class, featuring an optimized internal design for enhanced performance.

Specifications

• Bore Diameter (d): 40 mm
• Outer Diameter (D): 90 mm
• Width (B): 33 mm
• Basic Dynamic Load Rating: 32.5 kN
• Basic Static Load Rating: 11.2 kN
• Limiting Speed: 9000 r/min
• Cage: Glass fibre reinforced PA66 (Polyamide)
• Bore Type: Cylindrical

Label Info

• Manufacturer: SKF
• Model: 2308 ETN9
• EAN: 7316576638251

Application

Ideal for use in applications such as agricultural machinery, fans, industrial gearboxes, and food processing equipment where shaft deflection or mounting errors are expected.

Country of Origin

Made in Sweden.

CO2 Impact

Opting for this pre-owned component saves an estimated 1.9 kg of CO2 compared to manufacturing a new one, contributing to a more sustainable industrial process.

Availability

In stock and ready for immediate dispatch. Order now from PLC2Day for expert support and fast delivery.

FAQ

What does the 'ETN9' suffix signify on the SKF 2308 ETN9 bearing?

The 'E' indicates an optimized internal design for higher load-carrying capacity. The 'TN9' specifies that the bearing has a snap-type cage made of glass fibre reinforced polyamide 6,6, which is ball centred. This material offers a good balance of strength, elasticity, and thermal stability.

The polyamide cage (TN9) has a continuous operating temperature limit of up to 120 deg C (250 deg F). For applications with consistently higher temperatures, a bearing with a steel cage (e.g., suffix M) would be a more suitable choice.

A self-aligning ball bearing like the 2308 ETN9 can typically accommodate static misalignment of approximately 2.5 to 3 degrees. However, the permissible dynamic misalignment under load will be smaller and depends on the specific operating conditions. Always consult the SKF engineering manual for precise limits based on your application's load and speed.

Last Update: Friday, March 13, 2026

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