What are the exact dimensions of this ball bearing?

This deep groove ball bearing has an inner diameter of 20 mm, an outer diameter of 37 mm, and a width of 9 mm.

What does the 2RS1 suffix indicate?

It indicates that the bearing has rubber contact seals on both sides to retain lubricant and keep contaminants out.

What internal radial clearance does this bearing have?

This bearing features standard CN (normal) internal radial clearance.

What types of loads can this deep groove ball bearing handle?

It can accommodate both radial and axial loads in both directions at high speeds.

What type of bore does this Skf bearing have?

It features a standard cylindrical bore designed for mounting directly onto a straight 20 mm shaft.

SKF 61904-2RS1 single-row groove ball bearing cylindrical 20x37x9 mm

Supplier number: SKF 61904-2RS1 | EAN 7316577121950

Recommended Retail Price €49.95

24.60 tax incl.

€20.33 excl. VAT (incl. all environmental contributions)

On stock - immediately available

Ordered before 20:00 - delivered tomorrow 13/10/2026
Shipping costs €11.99 VAT included | Free shipping for orders over a total amount of 125 euros
Delivery by DHL

↓ Documents (1) ✆ Talk to a specialist

Smooth performance with 61904-2RS1

Practical benefits

Protection against external contaminants: Dual rubber seals keep lubricant in while preventing dust and moisture from entering your bearing.
Compact design for assemblies: With dimensions of 20X37X9 mm, you easily install this single row deep groove ball bearing in tight spaces.
Reliable radial load handling: Engineered from bearing steel, it handles combined radial and axial loads so your machinery runs quietly and steadily.

In a nutshell

The right choise for

With the Skf 61904-2RS1 single row deep groove ball bearing, you ensure smooth and dependable shaft rotation even in confined spaces. Thanks to its compact dimensions of 20X37X9 mm and cylindrical bore, you easily mount it onto a 20 mm shaft in applications such as electric motors, pumps, fans, or bicycle components. The dual rubber contact seals retain factory lubricant while effectively shielding the bearing from dust and moisture, eliminating the need for routine relubrication. Crafted from sturdy steel with standard normal clearance, it reliably handles radial and axial loads for quiet, maintenance-free, and stable operation.

Product information FAQ

€24.60

In stock - tax incl.

Key features according to our expert

Inner diameter: 20 mm
Width: 9 mm
Number of rows: 1
Sealing (bearing): Sealed on both sides
Material (bearing seal): Rubber
Radial clearance: CN (Normal)
Material (bearing): Steel
Material (cage): Brass (sheet)
Bore type: Cylindrical
High temperature: No
Outer diameter: 37 mm

Product description

Single row deep groove ball bearings with seals or shields are particularly versatile, have low friction and are optimized for low noise and low vibration, which enables high rotational speeds. They accommodate radial and axial loads in both directions, are easy to mount, and require less maintenance than many other bearing types. The integral sealing can significantly prolong bearing service life because it keeps lubricant in the bearings and contaminants out.

Integral sealing prolongs bearing service life
Simple, versatile and robust design
Low friction and high-speed capability
Accommodate radial and axial loads in both directions
Require little maintenance

Documents

⤓ Technical data sheet PDF

All Features

Inner diameter: 20 mm
Width: 9 mm
Number of rows: 1
Sealing (bearing): Sealed on both sides
Material (bearing seal): Rubber
Radial clearance: CN (Normal)
Material (bearing): Steel
Material (cage): Brass (sheet)
Bore type: Cylindrical
High temperature: No
Outer diameter: 37 mm
Matched arrangement: No
Tolerance class: Normal
Radial internal clearance: CN
Basic static load rating: 3.65
Material, bearing: Bearing steel
Relubrication feature: Without
Lubricant: Grease
Sealing type: Contact
Cage: Sheet metal
Locating feature, bearing outer ring: None
Filling slots: Without
Coating: Without
Sealing: Seal on both sides
Limiting speed: 12000
Bore diameter: 20
Basic dynamic load rating: 6.37
Outer diameter: 37

Brand SKF
01011101
EAN 7316577121950
Supplier number SKF 61904-2RS1

Frequently asked questions about this product

Answered by specialists

What are the exact dimensions of this ball bearing?: This deep groove ball bearing has an inner diameter of 20 mm, an outer diameter of 37 mm, and a width of 9 mm.
What does the 2RS1 suffix indicate?: It indicates that the bearing has rubber contact seals on both sides to retain lubricant and keep contaminants out.
What internal radial clearance does this bearing have?: This bearing features standard CN (normal) internal radial clearance.
What types of loads can this deep groove ball bearing handle?: It can accommodate both radial and axial loads in both directions at high speeds.
What type of bore does this Skf bearing have?: It features a standard cylindrical bore designed for mounting directly onto a straight 20 mm shaft.