SKF Explorer Spherical Roller Bearing 21313 EK

Description

The SKF 21313 EK is a high-performance spherical roller bearing from the Explorer series, designed to withstand heavy radial and axial loads in both directions. Its self-aligning capability makes it insensitive to shaft deflection and misalignment of the shaft relative to the housing. This bearing features a tapered bore for mounting with an adapter sleeve, ensuring a tight fit on the shaft.

Specifications

• Manufacturer: SKF
• Part Number: 21313 EK
• Type: Spherical Roller Bearing
• Bore Diameter: 65 mm
• Outer Diameter: 140 mm
• Width: 33 mm
• Bore Type: Tapered (1:12)
• Cage Material: Stamped Steel
• Rows of Rollers: Double Row

Label Info

• Brand: SKF Explorer
• Model: 21313 EK
• Country of Manufacture: Great Britain

Application

Ideal for use in heavy industrial equipment such as gearboxes, wind turbines, continuous casting machines, pumps, fans, and material handling systems where reliability and long service life are critical.

Country of Origin

Made in Great Britain.

CO2 Impact

Choosing this surplus bearing over a new one saves approximately 5.8 kg of CO2, contributing to a more sustainable industrial operation.

Availability

This item is in stock and ready for immediate dispatch. Order now from PLC2Day for expert support and fast delivery.

FAQ

What does the 'EK' suffix mean on this SKF 21313 bearing?

The 'E' signifies SKF's updated internal design for spherical roller bearings, offering optimized roller geometry for higher load capacity and longer life. The 'K' indicates that the bearing has a tapered bore with a standard 1:12 taper, designed for mounting on an adapter or withdrawal sleeve.

A bearing with a tapered bore requires precise mounting to achieve the correct internal clearance reduction. This is typically done using an adapter sleeve (e.g., H series) or by driving the bearing up a tapered shaft seat. The SKF Drive-up Method or measuring the axial drive-up distance are recommended procedures to ensure correct fit and prevent premature failure.

Yes, it is dimensionally interchangeable. However, the Explorer class bearing offers significant performance upgrades, including higher dynamic load ratings, improved precision, and longer service life compared to older, standard designs. While it can replace a standard bearing, the reverse is not recommended if the application was designed for Explorer performance.

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Friday, March 13, 2026