W 628/6 ZZ SKF 6x13x5 Stainless Steel Ball Bearing

Applications

The W 628/6 ZZ SKF ball bearing is designed for precision industrial applications where compact dimensions, corrosion resistance, and stable rotational performance are required. Thanks to its stainless steel construction, this ball bearing is suitable for use in humid environments, light chemical exposure, and applications where standard carbon steel bearings may corrode. It is commonly installed in compact mechanisms, automation systems, auxiliary drives, and precision assemblies operating within a bearing housing or as part of a small bearing unit.

Key Advantages

• stainless steel construction indicated by the W designation
• double metal shields ZZ for contamination protection
• high durability during continuous operation
• low friction and smooth running characteristics
• corrosion resistance in demanding environments
• precision manufacturing quality from SKF

Technical Data

• bearing type: deep groove ball bearing
• designation: W 628/6 ZZ
• inner diameter: 6 mm
• outer diameter: 13 mm
• width: 5 mm
• material: stainless steel
• sealing: ZZ - metal shields on both sides

Main Description

The W 628/6 ZZ SKF 6x13x5 stainless steel ball bearing is a high-precision rolling bearing developed for applications requiring corrosion resistance and reliable performance in compact installations. The W prefix in SKF nomenclature confirms that the bearing rings, balls, and cage are manufactured from stainless steel, providing enhanced protection against rust compared to standard steel bearings.

The double metal shields ZZ protect the internal raceways and rolling elements from dust and fine contaminants while maintaining excellent speed capability. The bearing is factory-lubricated and designed for maintenance-free operation, making it suitable for continuous service in demanding industrial conditions.

Due to its small size and precise geometry, this ball bearing is widely used in industrial applications, automation equipment, small electric motors, precision instruments, and mechanical assemblies where space is limited. It can operate directly within a bearing housing and integrates easily into compact bearing units without compromising performance.

Compared to standard 628 series bearings, the W 628/6 ZZ version offers higher durability in humid environments, longer service life, and improved operational reliability. These features make it a preferred choice for OEM manufacturers, maintenance departments, and B2B customers seeking consistent quality and predictable performance.

FAQ - Frequently Asked Questions

Is this bearing made of stainless steel?
Yes. The W designation indicates stainless steel construction.

What does ZZ mean?
ZZ refers to metal shields on both sides for protection against contamination.

Is it suitable for humid environments?
Yes, it is designed for applications with moisture exposure.

Does it require additional lubrication?
No. The bearing is factory-lubricated and maintenance-free.

Where is this bearing typically used?
In automation, precision mechanisms, auxiliary drives, and compact industrial assemblies.