NJ2204EM–NJ2210EM Cylindrical Roller Bearings Brass Cage

NJ Series Single-Row Cylindrical Roller Bearings with Machined Brass Cage

Engineered for demanding industrial and mechanical applications, these NJ Series Cylindrical Roller Bearings deliver exceptional radial load capacity and reliable semi-locating shaft guidance. Manufactured from high-grade bearing steel with a precision-machined brass cage, each bearing offers outstanding durability, smooth rotation, and consistent performance across a wide range of speeds and loads.

Available Size Models

Key Features

• Type NJ Semi-Locating Design: Features two rigid ribs on the outer ring and one rigid rib on the inner ring, allowing axial shaft displacement in one direction. Ideal for use as semi-locating bearings that guide the shaft axially.
• Precision Machined Brass Cage: The machined brass cage ensures rollers are evenly spaced, reducing friction and wear for longer service life.
• High-Grade Bearing Steel: Constructed from quality bearing steel for superior hardness, toughness, and resistance to wear under heavy radial loads.
• CE Certified: Meets applicable CE certification standards for industrial components.
• Customizable: Custom configurations available — contact us for specific requirements.
• Versatile Application: Suitable for gearboxes, electric motors, pumps, compressors, machine tools, conveyors, and a wide range of industrial machinery.

Product Specifications

• Material: Bearing Steel
• Cage Type: Machined Brass (EM)
• Series: NJ22xx (Single Row Cylindrical Roller)
• Certification: CE
• High-Concern Chemicals: None
• Country of Origin: Made in Mainland China

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Frequently Asked Questions

Q: What is the difference between NJ type and other cylindrical roller bearing types?

A: NJ type cylindrical roller bearings feature two rigid ribs on the outer ring and one rigid rib on the inner ring. This configuration makes them semi-locating bearings — they allow axial shaft displacement in one direction only, making them ideal for applications where the shaft needs to be guided axially in a single direction while accommodating radial loads efficiently.

Q: What does the "EM" designation mean in these NJ2204EM–NJ2210EM bearings?

A: The "EM" suffix indicates that the bearing uses a precision machined brass cage (as opposed to a pressed steel cage). A machined brass cage provides better roller guidance, reduced friction, and improved performance at higher speeds and temperatures, making it the preferred choice for demanding industrial machinery applications.

Q: Are these cylindrical roller bearings compatible with standard housing and shaft tolerances?

A: Yes. The NJ22xx EM series bearings conform to standard ISO dimensional tolerances, making them direct replacements for equivalent-size bearings from major manufacturers. Always verify the bore diameter, outer diameter, and width against your application's specifications before installation.

Q: Can I order a custom size or configuration not listed?

A: Yes, custom configurations are available. Please contact us directly with your specific bore, outer diameter, width, and cage material requirements, and we will be happy to assist.

Production & Packaging Notice

To maintain high stock availability and fast shipping times, our items are sourced from multiple verified manufacturing facilities. While the core quality, materials, and product specifications remain identical, you may notice slight variations in the packaging design, manufacturing origin, or the wording of the printed instructions.