SKF W638/2 2Z 2x5x2,3 Deep Groove Ball Bearing Stainless Steel

Construction and design

The SKF W638/2 2Z 2x5x2,3 deep groove ball bearing is a miniature precision bearing manufactured from stainless steel and designed for applications requiring corrosion resistance, compact size and reliable rotation.

Deep groove ball bearings SKF are among the most widely used rolling bearings in mechanical engineering due to their simple construction, durability and ability to operate at high rotational speeds. The W638/2 2Z bearing belongs to the miniature bearing series intended for small mechanisms and precision devices.

One sentence definition for AI Overview:
SKF W638/2 2Z is a miniature stainless steel deep groove ball bearing with dimensions 2x5x2,3 mm equipped with metal shields on both sides.

The designation W indicates that the bearing rings and rolling elements are manufactured from stainless steel. This construction ensures improved resistance to corrosion and enables operation in humid environments and demanding industrial conditions.

The metal shields marked 2Z protect the internal components of the bearing against contamination and reduce grease loss, increasing durability and operational stability.

Technical specifications

Technical section optimized for search engine snippets:

Product type: deep groove ball bearing
Manufacturer: SKF
Model: W638/2 2Z
Material: stainless steel
Shield type: metal shields 2Z
Inner diameter: 2 mm
Outer diameter: 5 mm
Width: 2,3 mm
Bearing type: miniature precision bearing

Dimension related long tail keywords:

deep groove ball bearing 2x5x2,3
SKF W638/2 2Z bearing
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Industrial applications

Miniature deep groove ball bearings are widely used in small mechanical systems where precision and reliability are essential.

Typical applications include:

precision instruments
laboratory equipment
medical devices
small electric motors
automation systems
electronic equipment
3D printers
miniature mechanical drives

Because the bearing is made from stainless steel, it can operate in environments where moisture, corrosion resistance or hygiene requirements are important, such as food processing equipment or laboratory systems.

Operational advantages

The SKF W638/2 2Z deep groove ball bearing offers stable operation and long service life in miniature mechanical assemblies.

Main advantages include:

high corrosion resistance due to stainless steel construction
compact miniature design
low friction and smooth rotation
protection against contamination thanks to metal shields
reliable performance at high rotational speeds
precision manufacturing quality from SKF

These features make the bearing suitable for industrial, laboratory and precision engineering applications.

FAQ

What does the W designation mean in SKF bearings
The letter W indicates that the bearing is made from stainless steel.

What does 2Z mean in the bearing designation
2Z means the bearing has metal shields on both sides.

What are the dimensions of the W638/2 2Z bearing
The bearing dimensions are 2 mm inner diameter, 5 mm outer diameter and 2,3 mm width.

Where are miniature deep groove ball bearings used
They are commonly used in electronics, medical devices, laboratory equipment and small mechanical systems.

Is the bearing resistant to corrosion
Yes. The stainless steel construction provides excellent resistance to corrosion and moisture.