Bearing NJ 320 C4 NASO ZKL



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Product detailed description
Bearing NJ 320 C4 NASO ZKL
The NJ 320 C4 NASO ZKL is a high-quality cylindrical roller bearing designed for heavy-duty applications requiring reliable performance and durability. Manufactured by ZKL, a trusted name in bearing technology, this bearing is engineered to provide excellent load capacity and operational stability in demanding industrial environments.
This particular model, NJ 320 C4, features a standard design with one fixed and one loose rib, allowing for axial displacement in one direction. It is ideal for applications where thermal expansion or shaft deflection occurs. The C4 clearance rating ensures extra internal clearance, making it suitable for high-temperature operations or situations where shaft expansion is expected.
Key features of the NJ 320 C4 NASO ZKL include:
- Robust cylindrical roller design for high radial load capacity
- Internal clearance C4 for enhanced thermal and operational flexibility
- Precision manufacturing standards ensuring long service life and minimal friction
- NASO designation indicating a specific internal design and cage configuration for optimized performance
- Durable materials and finishes for resistance to wear and corrosion
The dimensions for the NJ 320 bearing series, according to ISO standards, are:
- Inside diameter (d): 160 mm
- Outside diameter (D): 290 mm
- Width (B): 52 mm
This makes the NJ 320 C4 NASO ZKL an excellent choice for heavy machinery, electric motors, gearboxes, and other industrial equipment requiring reliable radial and axial load handling capabilities.
When selecting the NJ 320 C4 NASO ZKL, you benefit from ZKL’s expertise in delivering bearings that combine precision, durability, and performance, ensuring your machinery operates smoothly and efficiently over extended periods.

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ZKL Bearings and Transmission Technology Manufacturer
ZKL is a renowned manufacturer specializing in the production of high-quality bearings and advanced transmission technology solutions. With a rich history and commitment to innovation, ZKL has established itself as a key player in the global bearing industry.
Company History
Founded in 1947, ZKL has grown from a small manufacturer into one of the leading European producers of rolling bearings. Over the decades, the company has continuously invested in modern production technologies and research & development to maintain its competitive edge and deliver superior products to various industries worldwide.
Product Range
ZKL offers a comprehensive range of bearing products and transmission components designed for durability, precision, and high performance:
- Deep Groove Ball Bearings – versatile bearings suitable for various applications.
- Roller Bearings – including cylindrical roller bearings and spherical roller bearings for heavy load capacity.
- Needle Roller Bearings – optimized for space-constrained applications requiring high load capacity.
- Special Bearings and Customized Solutions – tailored bearings designed to meet unique industry requirements.
- Transmission Components – precision parts used in a variety of mechanical transmission systems.
Main Focus and Technologies
ZKL focuses on delivering reliable and innovative bearing solutions that cater to demanding operational conditions. The company emphasizes:
- Material excellence and cutting-edge manufacturing processes to ensure product longevity.
- Advanced heat treatment and sealing technologies for enhanced bearing performance.
- Customization and flexibility to accommodate specific customer needs across different sectors.
Application Areas
ZKL bearings and transmission products are widely used in a diverse range of industries, including:
- Automotive and transportation
- Industrial machinery and equipment
- Energy sector, including wind turbines and power plants
- Engineering and manufacturing processes
- Railway and aerospace technologies
Company Headquarters
ZKL is headquartered in Plzeň, Czech Republic. From this strategic location, the company serves a broad international market, combining traditional European manufacturing quality with modern technological standards to meet the evolving needs of its customers.