SKF W 627/4-2Z Stainless Steel Miniature Ball Bearing

Description

The SKF W 627/4-2Z is a high-precision, single-row deep groove ball bearing designed for reliability and performance. Constructed from stainless steel ('W'), it offers excellent resistance to corrosion and moisture. The double metal shields ('2Z') provide effective protection against solid contaminants while maintaining low frictional torque, making it suitable for high-speed applications. This bearing is supplied pre-lubricated for life, ensuring maintenance-free operation.

Specifications

• Bore Diameter (d): 4 mm
• Outside Diameter (D): 7 mm
• Width (B): 2.5 mm
• Sealing: 2Z (Metal shields on both sides)
• Material: Stainless Steel
• Basic Dynamic Load Rating: 0.27 kN
• Basic Static Load Rating: 0.09 kN

Label Info

• Manufacturer: SKF
• Type: W 627/4-2Z
• EAN: 7316571265896

Application

This miniature bearing is ideal for a wide range of applications, including small electric motors, medical devices, robotics, precision instrumentation, and other machinery where space is limited and high rotational speeds are required.

Country of Origin

This product is made in Japan.

CO2 Impact

Choosing a refurbished or surplus component like this SKF bearing prevents the need for new manufacturing, saving an estimated 0.014 kg of CO2. This saving is equivalent to the energy needed to fully charge a smartphone more than once.

Availability

This item is in stock, new in its original, sealed manufacturer packaging. Order now from PLC2Day for expert support and fast delivery.

FAQ

What does the 'W' and '2Z' suffix mean for the SKF W 627/4-2Z?

The 'W' prefix indicates that the bearing is made from stainless steel, making it resistant to corrosion. The '2Z' suffix means the bearing is fitted with metal shields on both sides to protect against contaminants and retain lubricant, without adding the frictional drag that rubber seals would.

Yes, the 2Z metal shields are non-contacting, which results in very low friction. This design makes the W 627/4-2Z well-suited for high-speed applications where minimal heat generation is critical.

Yes, SKF bearings with the 2Z suffix are supplied lubricated for life with a high-quality grease and are considered maintenance-free under normal operating conditions.

Last Update: March 13, 2026

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