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Stainless Steel Deep Groove Ball Bearings W 638/3-2Z

Stainless Steel Deep Groove Ball Bearings W 638/3-2Z

The W 638/3-2Z is a compact stainless steel deep groove ball bearing, measuring just 3mm by 7mm by 3mm. It handles radial loads up to 40 lbf and spins smoothly at speeds up to 80,000 RPM.

Its shielded design keeps grease in and dirt out, making it low-maintenance. The all-stainless construction ensures corrosion resistance and durability.

This bearing works well in temperatures from -30°C to 120°C, suitable for various environments. It’s interchangeable with SKF bearings for easy replacement.

Ideal for small devices like medical instruments or precision tools where space is limited. Compliant with RoHS and REACH standards, it’s a safe and reliable choice.

Weighing only 0.00041kg, it’s lightweight yet robust for its tiny size. The grease lubrication ensures smooth operation over time.

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Product Parameters

  • Part Number W 638/3-2Z
  • Brand TFL
  • Interchangeable SKF
  • Bore Dia 3 mm
  • Bore Dia Tolerance -0.008mm to 0
  • Outer Dia 7 mm
  • Outer Dia Tolerance -0.008mm to 0
  • Width 3 mm
  • Width Tolerance -0.12mm 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 40 lbf
  • Static Radial Load 13 lbf
  • Temperature Range -30° to 120 °C
  • Lubrication Grease
  • RoHS Compliant
  • REACH Compliant
  • Max Speed 80000 rpm
  • Weight 0.00041 kg
  • Price（$） 2.25
Stainless Steel Deep Groove Ball Bearings W 638/3-2Z dimension drawing
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Features

Why Choose W 638/3-2Z Bearing for Precision Tasks?

W 638/3-2Z Bearing is crafted with stainless steel rings and balls, ensuring excellent corrosion resistance.
Its compact size of 3 mm×7 mm×3 mm makes it ideal for precision instruments and small machinery.
The shielded design protects against contaminants while maintaining smooth operation.
With a maximum speed of 80,000 rpm, it delivers reliable performance in high-speed applications.

Application

Common Applications of W 638/3-2Z Bearing
W 638/3-2Z Bearing is widely used in small industrial equipment, such as miniature motors and precision instruments, where its compact size and shielded design prevent dust ingress. The stainless steel construction ensures corrosion resistance, ideal for humid or washdown environments.

In automotive applications, W 638/3-2Z Bearing fits well in compact components like sensors or small actuators, offering reliable radial load support. Its grease lubrication allows for maintenance-free operation, reducing long-term servicing needs.

For medical devices, W 638/3-2Z Bearing’s small footprint and smooth operation make it suitable for delicate instruments like dental tools or diagnostic equipment. The P0 tolerance class ensures consistent performance in critical settings.

Automation systems benefit from W 638/3-2Z Bearing in robotic joints or linear guides, where high-speed capability (up to 80,000 rpm) is essential. The lightweight design also minimises energy consumption in continuous operations.

In consumer electronics, W 638/3-2Z Bearing can be found in devices like cooling fans or small printers, where quiet operation and durability are key. The metric sizing ensures easy integration with standard components.

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