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Stainless Steel Deep Groove Ball Bearings W 638/2-2Z

Stainless Steel Deep Groove Ball Bearings W 638/2-2Z

The W 638/2-2Z is a compact stainless steel deep groove ball bearing, measuring just 2mm by 5mm by 2.3mm. It handles radial loads up to 21 lbf and spins smoothly at speeds up to 100,000 RPM.

Its shielded design keeps out dust and dirt, while the stainless steel construction resists corrosion. The bearing comes pre-greased for easy installation and long-lasting performance.

With a temperature range of -30°C to 120°C, it’s suitable for various environments. This model is interchangeable with SKF bearings, making replacements straightforward.

Ideal for small precision devices like medical instruments or miniature motors where space is limited. Compliant with RoHS and REACH standards, it’s safe for most applications.

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    Description Features Application Q&A Featured Products Our Process

Product Parameters

  • Part Number W 638/2-2Z
  • Brand TFL
  • Interchangeable SKF
  • Bore Dia 2 mm
  • Bore Dia Tolerance -0.008mm to 0
  • Outer Dia 5 mm
  • Outer Dia Tolerance -0.008mm to 0
  • Width 2.3 mm
  • Width Tolerance -0.04mm to 0
  • System of Measurement Metric
  • Bearing Type Ball
  • For Load Direction Radial
  • Construction Single Row
  • Seal Type Shielded
  • Tolerance Class P0
  • Radial Clearance Trade No CN
  • Ring Material Stainless Steel
  • Ball Material Stainless Steel
  • Cage Material Stainless Steel
  • Dynamic Radial Load 21 lbf
  • Static Radial Load 6 lbf
  • Temperature Range -30° to 120 °C
  • Lubrication Grease
  • RoHS Compliant
  • REACH Compliant
  • Max Speed 100000 rpm
  • Weight 0.000204 kg
  • Price（$） 1.73
Stainless Steel Deep Groove Ball Bearings W 638/2-2Z dimension drawing
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Features

How Does W 638/2-2Z Bearing Reduce Friction?

W 638/2-2Z Bearing features stainless steel construction, ensuring smooth operation with minimal friction.
Its shielded design keeps contaminants out, maintaining consistent performance over time.
The single-row deep groove design allows for efficient radial load handling, up to 21 lbf.
With a maximum speed of 100,000 rpm, it is ideal for high-speed applications.

Application

Common Applications of W 638/2-2Z Bearing
W 638/2-2Z Bearing is widely used in small precision instruments, such as watches and medical devices, where its compact size and shielded design protect against dust and debris.
The stainless steel construction ensures corrosion resistance, making it suitable for environments where moisture or chemicals are present.

Industrial Uses of W 638/2-2Z Bearing
In automation systems, W 638/2-2Z Bearing supports delicate mechanisms like miniature robotic arms or 3D printer components, thanks to its smooth operation and high-speed capability.
Its lightweight design also makes it a good fit for portable electronic devices, reducing overall weight without compromising performance.

Where to Use W 638/2-2Z Bearing
For consumer electronics, W 638/2-2Z Bearing is often found in small cooling fans or handheld gadgets, where reliability and quiet operation are key.
The grease lubrication ensures long service life, even in continuous-use scenarios like office equipment or household appliances.

Q&A

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