Bearings with Metal Shields (ZZ / ZR) – Reliable Protection for Industrial Applications

Bearings with metal shields, commonly marked as ZZ or ZR, are among the most widely used types of protected bearings in modern machinery. Their design provides effective protection against dust and small contaminants, while allowing the bearing to operate with low friction and high rotational speed. These bearings are essential wherever machinery requires long service life, smooth running, and minimal maintenance.

What Are ZZ / ZR Metal Shielded Bearings?

ZZ or ZR bearings are equipped with non-contact metal shields on both sides. These shields help keep the internal lubrication intact and protect the bearing from external contamination. The metal shielding does not touch the inner ring, which allows the bearing to maintain high speeds and low friction values.

Main Advantages

• High-speed capability thanks to non-contact protection.
• Reduced maintenance due to sealed lubrication.
• Better resistance to dust and solid particles compared to open designs.
• Longer service life in general industrial environments.
• Available in many dimensions and tolerance classes from leading manufacturers.

Common Applications

Metal shielded bearings are a standard choice across many sectors. They are especially suitable for:

• Electric motors and generators
• Industrial fans and blowers
• Pumps and compressors
• Household appliances
• Power tools and workshop machines
• Conveyor rollers and automated systems
• Medium-speed industrial machinery

Types of Shielded Bearings We Can Supply

We provide a wide selection of metal-shielded bearings, including:

• Deep groove ball bearings with ZZ shields
• Miniature bearings with ZR or ZZ protection
• High-speed precision bearings with metal shields
• Special shielded variants for demanding industrial environments

Why Choose Metal Shielded Bearings?

They offer an excellent balance between protection, speed performance, and cost. For environments where the bearing is not exposed to heavy moisture or chemicals, ZZ and ZR designs are often the most practical choice. Their long-term reliability makes them a preferred option for manufacturers as well as maintenance professionals.

Worldwide Supply

We supply shielded bearings to customers worldwide. Whether you need a single piece or a bulk industrial delivery, we can source, package, and ship bearings efficiently to any location. Our inventory includes products from all major global brands.

Request Availability or a Quote

If you need ZZ or ZR metal-shielded bearings for your application, simply send us the bearing number, required quantity, and destination. We will provide availability and pricing quickly and reliably.