What are the exact dimensions of this SKF ball bearing?

The SKF 61801-2Z bearing has an inside diameter of 12 mm, an outside diameter of 21 mm, and a width of 5 mm.

What does the 2Z designation mean for this bearing?

The 2Z suffix indicates that the deep groove ball bearing is fitted with non-contact metal shields on both sides.

What bore type does this deep groove ball bearing have?

This single-row deep groove ball bearing features a cylindrical bore and normal internal radial clearance (CN).

What material are the bearing shields made of?

The protective shields on both sides of the bearing are made of metal.

Is this ball bearing suitable for high-temperature applications?

No, this standard steel bearing is not designed as a high-temperature version.

SKF 61801-2Z single-row groove ball bearing cylindrical 12x21x5 mm

Supplier number: SKF 61801-2Z | EAN 7316577611512

Recommended Retail Price €37.53

18.40 tax incl.

€15.21 excl. VAT (incl. all environmental contributions)

On stock - immediately available

Ordered before 20:00 - delivered tomorrow 21/10/2026
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 rotation with Skf ball bearings

Practical benefits

Dual metal shield protection: Both metal shields keep the lubricant sealed inside so you avoid contamination from dirt and debris.
Low friction running performance: You achieve quiet and efficient operation while maintaining high rotational speeds without excess heat build-up.
Compact and versatile design: Built with a 12 mm bore and durable steel, it reliably handles your radial and axial loads.

In a nutshell

The right choise for

With the Skf 61801-2Z single-row deep groove ball bearing, you ensure smooth and reliable rotation in compact mechanical assemblies. Designed with a 12 mm cylindrical bore, a 21 mm outside diameter, and a slim 5 mm width, this steel bearing easily handles both radial and axial loads. The dual metal shields keep the lubricant sealed inside while protecting internal rolling elements from dust and debris. This delivers low running friction, minimal heat build-up, and quiet operation at high rotational speeds. It is an ideal solution for maintaining and repairing electric motors, power tools, and precision machinery in tight spaces.

Product information FAQ

€18.40

In stock - tax incl.

Key features according to our expert

Inner diameter: 12 mm
Width: 5 mm
Number of rows: 1
Sealing (bearing): Sealed on both sides
Material (bearing seal): Metal
Radial clearance: CN (Normal)
Material (bearing): Steel
Material (cage): Brass (sheet)
Bore type: Cylindrical
High temperature: No
Outer diameter: 21 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: 12 mm
Width: 5 mm
Number of rows: 1
Sealing (bearing): Sealed on both sides
Material (bearing seal): Metal
Radial clearance: CN (Normal)
Material (bearing): Steel
Material (cage): Brass (sheet)
Bore type: Cylindrical
High temperature: No
Outer diameter: 21 mm
Matched arrangement: No
Tolerance class: Normal
Radial internal clearance: CN
Basic static load rating: 0.92
Material, bearing: Bearing steel
Relubrication feature: Without
Reference speed: 70000
Lubricant: Grease
Sealing type: Non-contact
Cage: Sheet metal
Locating feature, bearing outer ring: None
Filling slots: Without
Coating: Without
Sealing: Shield on both sides
Limiting speed: 36000
Bore diameter: 12
Basic dynamic load rating: 1.74
Outer diameter: 21

Brand SKF
01011266
EAN 7316577611512
Supplier number SKF 61801-2Z

Frequently asked questions about this product

Answered by specialists

What are the exact dimensions of this SKF ball bearing?: The SKF 61801-2Z bearing has an inside diameter of 12 mm, an outside diameter of 21 mm, and a width of 5 mm.
What does the 2Z designation mean for this bearing?: The 2Z suffix indicates that the deep groove ball bearing is fitted with non-contact metal shields on both sides.
What bore type does this deep groove ball bearing have?: This single-row deep groove ball bearing features a cylindrical bore and normal internal radial clearance (CN).
What material are the bearing shields made of?: The protective shields on both sides of the bearing are made of metal.
Is this ball bearing suitable for high-temperature applications?: No, this standard steel bearing is not designed as a high-temperature version.