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Stainless Steel Deep Groove Ball Bearings W 618/4

Stainless Steel Deep Groove Ball Bearings W 618/4

The W 618/4 is a compact stainless steel deep groove ball bearing, measuring just 4mm by 9mm by 2.5mm. It handles radial loads up to 82 lbf and can spin at speeds up to 85,000 RPM, making it both sturdy and fast.

Its open design allows for easy lubrication, while the all-stainless construction ensures corrosion resistance. The bearing operates smoothly in temperatures from -30°C to 120°C.

This model is interchangeable with SKF bearings, offering a reliable replacement option. It’s ideal for small devices like precision instruments or miniature motors where space is limited.

Weighing only 0.0006kg, it’s lightweight yet durable. Compliant with RoHS and REACH standards, it’s safe for various applications.

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Product Parameters

  • Part Number W 618/4
  • Brand TFL
  • Interchangeable SKF
  • Bore Dia 4 mm
  • Bore Dia Tolerance -0.008mm to 0
  • Outer Dia 9 mm
  • Outer Dia Tolerance -0.008mm to 0
  • Width 2.5 mm
  • Width Tolerance -0.12mm to 0
  • System of Measurement Metric
  • Bearing Type Ball
  • For Load Direction Radial
  • Construction Single Row
  • Seal Type Open
  • Tolerance Class P0
  • Radial Clearance Trade No CN
  • Ring Material Stainless Steel
  • Ball Material Stainless Steel
  • Cage Material Stainless Steel
  • Dynamic Radial Load 82 lbf
  • Static Radial Load 26 lbf
  • Temperature Range -30° to 120 °C
  • RoHS Compliant
  • REACH Compliant
  • Max Speed 85000 rpm
  • Weight 0.0006 kg
Stainless Steel Deep Groove Ball Bearings W 618/4 dimension drawing
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Features

Why Choose W 618/4 Bearing for Precision Tasks?

W 618/4 Bearing is crafted from stainless steel, offering excellent resistance to corrosion and wear.
Its compact size of 4 mm×9 mm×2.5 mm makes it ideal for precision applications where space is limited.

The open design ensures smooth operation, with a maximum speed of 85,000 rpm for high-performance needs.
With a dynamic radial load capacity of 82 lbf, it handles light to moderate loads efficiently.

W 618/4 Bearing’s single-row construction provides reliable radial load support in various conditions.
Its stainless steel cage maintains ball alignment, ensuring consistent performance over time.

Application

Common Applications of W 618/4 Bearing
W 618/4 Bearing works well in small electric motors, such as those found in cooling fans or miniature pumps, thanks to its compact 4mm bore size. The stainless steel construction ensures it handles moisture and mild chemicals without rusting.

In medical devices like dental tools or handheld diagnostics, W 618/4 Bearing offers smooth rotation at high speeds. Its open design allows for easy cleaning, which is vital in hygiene-sensitive environments.

For precision instruments such as watch mechanisms or optical equipment, W 618/4 Bearing provides reliable performance due to its tight tolerances. The lightweight design (just 0.0006kg) minimises inertia in delicate movements.

Automotive applications include throttle systems or dashboard controls where space is limited. Here, W 618/4 Bearing’s 85,000 rpm capability ensures responsive operation.

In consumer electronics like camera lenses or drone gimbals, this bearing’s 2.5mm width fits snugly into compact designs. The all-stainless build resists wear from frequent adjustments.

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