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Flanged Deep Groove Ball Bearings W 639/3 R-2Z

Flanged Deep Groove Ball Bearings W 639/3 R-2Z

The W 639/3 R-2Z is a compact flanged deep groove ball bearing, measuring just 3mm by 8mm with a 4mm width. Its stainless steel construction offers good corrosion resistance and durability.

This shielded bearing handles radial loads up to 72 lbf and spins smoothly at speeds up to 75,000 RPM. The built-in flange helps with easy mounting and positioning in tight spaces.

Pre-lubricated with grease, it requires minimal maintenance while operating in temperatures from -30°C to 120°C. The all-stainless design ensures long service life even in demanding conditions.

Ideal for small electric motors, medical devices or precision instruments where space is limited. Weighing under 1 gram, it’s lightweight yet robust for its size. Compliant with RoHS and REACH standards.

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Product Parameters

  • Part Number W 639/3 R-2Z
  • Brand TFL
  • Interchangeable SKF
  • 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
  • Bore Dia 3 mm
  • Bore Dia Tolerance -0.008mm to 0
  • Outer Dia 8 mm
  • Outer Dia Tolerance -0.008mm to 0
  • Width 4 mm
  • Width Tolerance -0.12mm to 0
  • Flange Outer Dia 9.5 mm
  • Flange Thickness 0.9 mm
  • Ring Material Stainless Steel
  • Ball Material Stainless Steel
  • Cage Material Stainless Steel
  • Dynamic Radial Load 72 lbf
  • Static Radial Load 20 lbf
  • Max Speed 75000 rpm
  • Temperature Range -30° to 120 °C
  • Lubrication Grease
  • RoHS Compliant
  • REACH Compliant
  • Weight 0.000922 kg
  • Price（$） 1.4
Flanged Deep Groove Ball Bearings W 639/3 R-2Z dimension drawing
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Features

Why Choose W 639/3 R-2Z Bearing for Precision Tasks?

W 639/3 R-2Z Bearing is crafted with stainless steel rings and balls, ensuring smooth radial load handling.
Its compact size of 3 mm×9.5 mm×4 mm makes it ideal for precision applications where space is limited.

The shielded design protects against contaminants, maintaining performance in demanding environments.
With a maximum speed of 75,000 rpm, it delivers reliable operation for high-speed tasks.

W 639/3 R-2Z Bearing’s flange outer dia of 9.5 mm provides secure mounting, reducing misalignment risks.
Its grease lubrication ensures long-lasting performance with minimal maintenance.

Application

Industrial Uses of W 639/3 R-2Z Bearing
W 639/3 R-2Z Bearing is commonly used in small industrial equipment like precision instruments and miniature motors. Its shielded design helps keep contaminants out, ensuring reliable performance in dusty environments.

Where Is W 639/3 R-2Z Bearing Used?
You’ll often find W 639/3 R-2Z Bearing in automotive applications such as small electric motors and sensors. Its compact size and stainless steel construction make it ideal for tight spaces and corrosive conditions.

Perfect Fit for Automation: W 639/3 R-2Z Bearing
W 639/3 R-2Z Bearing works well in robotic arms and 3D printers, where smooth rotation is essential. The flange design provides extra stability, preventing misalignment during high-speed operations.

Medical vs Industrial: Where W 639/3 R-2Z Bearing Excels
In medical devices like dental tools, W 639/3 R-2Z Bearing offers quiet and precise movement. For industrial uses, its high-speed capability suits small conveyor systems and sorting machines.

Essential Roles of W 639/3 R-2Z Bearing
W 639/3 R-2Z Bearing is a go-to choice for consumer electronics, such as cooling fans in laptops. Its grease lubrication ensures long-lasting performance with minimal maintenance required.

Q&A

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