SKF W 638/2-2Z Stainless Steel Deep Groove Ball Bearing

Description

The SKF W 638/2-2Z is a high-quality, single-row deep groove ball bearing. Constructed from stainless steel ('W' prefix), it offers excellent corrosion resistance. The '-2Z' suffix indicates that the bearing is fitted with two metal shields to prevent the ingress of dirt and retain lubricant. This miniature bearing is engineered for high rotational speeds and can accommodate both radial and axial loads in both directions.

Specifications

• Manufacturer: SKF
• Type Number: W 638/2-2Z
• Bore Diameter: 2 mm
• Outside Diameter: 5 mm
• Width: 2.5 mm
• Material: Stainless Steel
• Sealing: Shielded on both sides (2Z)

Label Info

• EAN: 7316571538051

Application

This miniature stainless steel bearing is ideal for a wide range of applications including small motors, medical devices, robotics, instrumentation, and other precision equipment where space is limited and corrosion resistance is required.

Country of Origin

Made in Japan.

CO2 Impact

Opting for this pre-owned component avoids the production of a new one, saving an estimated 0.01 kg of CO2. This saving is comparable to fully charging your smartphone more than once.

Availability

This item is in stock and ready for immediate dispatch. Order now from PLC2Day for expert support and fast delivery.

FAQ

What does the 'W' prefix in W 638/2-2Z signify?

The 'W' prefix in SKF's nomenclature for this series indicates that the bearing is made from stainless steel, providing enhanced resistance to corrosion compared to standard chrome steel bearings.

The '-2Z' suffix means the bearing has a pressed metal shield on both sides. These non-contact shields protect against solid contaminants without increasing friction, making them suitable for high-speed applications where low torque is crucial.

Yes, due to its stainless steel construction, it is resistant to washdowns and cleaning agents commonly used in the food and beverage industry. However, always verify that the lubricant inside is also food-grade if required for your specific application.

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Last Update: Friday, March 13, 2026