What are the exact dimensions of this SKF ball bearing?

This ball bearing has a 20 mm inside diameter (bore), a 52 mm outside diameter, and a width of 21 mm.

What is the main advantage of a self-aligning ball bearing?

It smoothly accommodates static and dynamic angular misalignment or shaft deflections without increasing friction.

What does the 2RS1 sealing designation mean?

The bearing features contact rubber seals on both sides to retain grease and keep out dust and contaminants.

What material is the cage made of?

The TN9 suffix indicates a durable cage made from glass-fibre reinforced polyamide (synthetic material).

What bore type and radial clearance does this bearing feature?

It features a cylindrical bore for direct mounting onto a straight shaft and standard normal radial clearance (CN).

SKF 2304 E-2RS1TN9 double-row self-aligning ball bearing cylindrical 20x52x21 mm

Supplier number: SKF 2304 E-2RS1TN9 | EAN 7316577041234

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Recommended Retail Price €151.61

74.95 tax incl.

€61.94 excl. VAT (incl. all environmental contributions)

On stock - immediately available

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Smooth rotation under misalignment

Practical benefits

Automatic alignment error compensation: The double-row design accommodates both static and dynamic shaft misalignments, ensuring uninterrupted operational performance.
Dual contact seal protection: Built-in rubber seals on both sides retain lubrication while keeping contaminants out to maximize bearing life.
Skf polyamide cage efficiency: The reinforced polyamide cage minimizes friction and heat generation, letting you run at high rotational speeds.

In a nutshell

The right choise for

With the Skf 2304 E-2RS1TN9 double-row self-aligning ball bearing, you keep rotating machinery running reliably, even when facing shaft deflection or mounting misalignment. Thanks to its double-row spherical design, it smoothly compensates for static and dynamic angular errors without causing extra friction or wear. The dual rubber contact seals (2RS1) retain lubricant while blocking dust, dirt, and moisture in demanding industrial or conveyor applications. a lightweight polyamide cage (TN9) minimizes friction and noise at high rotational speeds for smooth running. Featuring a cylindrical bore of 20 mm, an outer diameter of 52 mm, and a width of 21 mm, it mounts directly onto straight shafts.

Product information FAQ Reviews

€74.95

In stock - tax incl.

Key features according to our expert

Inner diameter: 20 mm
Width: 21 mm
Number of rows: 2
Sealing (bearing): Sealed on both sides
Material (bearing seal): Rubber
Radial clearance: CN (Normal)
Material (cage): Plastic
Bore type: Cylindrical
Outer diameter: 52 mm

Product description

Self-aligning ball bearings, with seals on both sides, have two rows of balls, a common sphered raceway in the outer ring and two deep uninterrupted raceway grooves in the inner ring. They are insensitive to angular misalignment of the shaft relative to the housing. The integral sealing can significantly prolong bearing service life because it keeps lubricant in the bearings and contaminants out.

Accommodate static and dynamic misalignment
Excellent high-speed performance
Excellent light load performance
Low friction
Integral sealing results in reduced maintenance requirements and prolonged bearing service life

Documents

⤓ Technical data sheet PDF

All Features

Inner diameter: 20 mm
Width: 21 mm
Number of rows: 2
Sealing (bearing): Sealed on both sides
Material (bearing seal): Rubber
Radial clearance: CN (Normal)
Material (cage): Plastic
Bore type: Cylindrical
Outer diameter: 52 mm
Relubrication feature: Without
Retaining feature, inner ring: None
Radial internal clearance: CN
Basic static load rating: 4
Cage: Non-metallic
Reference speed: 24000
Lubricant: Grease
Sealing type: Contact
Locating feature, bearing outer ring: None
Material, bearing: Bearing steel
Tolerance class: Normal
Basic dynamic load rating: 14.3
Sealing: Seal on both sides
Limiting speed: 9000
Bore diameter: 20
Coating: Without
Outer diameter: 52

Brand SKF
01030143
EAN 7316577041234
Supplier number SKF 2304 E-2RS1TN9

Frequently asked questions about this product

Answered by specialists

What are the exact dimensions of this SKF ball bearing?: This ball bearing has a 20 mm inside diameter (bore), a 52 mm outside diameter, and a width of 21 mm.
What is the main advantage of a self-aligning ball bearing?: It smoothly accommodates static and dynamic angular misalignment or shaft deflections without increasing friction.
What does the 2RS1 sealing designation mean?: The bearing features contact rubber seals on both sides to retain grease and keep out dust and contaminants.
What material is the cage made of?: The TN9 suffix indicates a durable cage made from glass-fibre reinforced polyamide (synthetic material).
What bore type and radial clearance does this bearing feature?: It features a cylindrical bore for direct mounting onto a straight shaft and standard normal radial clearance (CN).