SKF 31311 J2/Q Tapered Roller Bearing

Description

This SKF 31311 J2/Q is a single-row tapered roller bearing designed for high-load capacity and long service life. Its robust construction makes it ideal for handling combined radial and axial loads simultaneously. This component is a reliable choice for a wide range of industrial machinery. This is a new old stock item in its original, opened packaging.

Specifications

• Manufacturer: SKF
• Model: 31311 J2/Q
• Type: Single-Row Tapered Roller Bearing
• Bore Diameter (d): 55 mm
• Outside Diameter (D): 120 mm
• Total Width (T): 31.5 mm
• Cage Material: Stamped Steel (J2)
• Special Feature: Optimized internal geometry (Q)

Label Info

• Brand: SKF
• Part Number: 31311 J2/Q
• EAN: 7316577057693

Application

Suitable for various industrial applications, including automotive axles, gearboxes, wind turbines, and heavy machinery where high combined loads are present.

Country of Origin

Made in Germany.

CO2 Impact

Choosing this reused bearing over a new one prevents the emission of approximately 3.26 kg of CO2, contributing to a more sustainable industrial practice.

Availability

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

FAQ

What does the "J2/Q" suffix signify for this SKF bearing?

The "J2" indicates that the bearing has a stamped steel cage, which is roller-guided. The "Q" signifies that the bearing features optimized internal geometry and surface finish, leading to reduced friction, lower operating temperatures, and potentially longer service life.

Yes, tapered roller bearings like the 31311 J2/Q are suitable for moderate to high speeds. However, the actual permissible speed depends on factors like lubrication type (grease or oil), cooling, and the specific load conditions of the application.

Mounting should be done using proper tools like a bearing press or induction heater to avoid damaging the rings and rollers. It requires precise axial preloading for optimal performance. Lubrication should be chosen based on the operating speed and temperature; a high-quality grease with EP (Extreme Pressure) additives is commonly used.

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Last Update: March 13, 2026