Bearing 6303 Z ZKL



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Product detailed description
Bearing 6303 Z ZKL
The 6303 Z ZKL is a high-quality deep groove ball bearing widely used in various mechanical and industrial applications. Manufactured by ZKL, a renowned brand known for precision and durability, this bearing ensures reliable performance and long service life in demanding environments.
This particular model, 6303 Z, is designed with a single metal shield (denoted by the "Z"), which protects the bearing from dust and other contaminants while allowing for high-speed operation. The robust construction and advanced materials used in the 6303 Z ZKL make it suitable for applications such as electric motors, automotive components, gearboxes, and agricultural machinery.
Key features of the 6303 Z ZKL include:
- Deep groove ball bearing design for smooth rotation and reduced friction
- Single metal shield on one side to prevent contamination while maintaining ventilation
- High load capacity with excellent radial and axial load handling
- Durable steel construction ensuring resistance to wear and corrosion
- Compatible with standard lubrication practices, enhancing maintenance flexibility
The standard dimensions for the 6303 series bearing are 17 mm (bore diameter) x 47 mm (outer diameter) x 14 mm (width), making the 6303 Z ZKL perfectly suited for a wide range of machinery and equipment requiring these specifications.
Whether you are replacing worn-out bearings or designing new equipment, the 6303 Z ZKL offers an optimal balance of performance, reliability, and cost-effectiveness. Its precise engineering and consistent quality from ZKL ensure seamless integration and extended operational life.

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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.