Bearing 6311 ZN ZKL



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Product detailed description
Bearing 6311 ZN ZKL: High-Quality Deep Groove Ball Bearing
The bearing 6311 ZN ZKL is a precision-engineered deep groove ball bearing designed to deliver reliable performance in a wide range of industrial applications. Manufactured by ZKL, a renowned brand in the bearing industry, this model offers excellent durability, smooth operation, and high load-carrying capacity. Its robust construction ensures long service life and minimal maintenance requirements, making it an ideal choice for machinery, automotive, and equipment manufacturers seeking dependable rotational solutions.
This bearing features a single-row deep groove ball design, which allows it to accommodate radial loads and moderate axial loads in both directions. The "ZN" designation indicates that the bearing is equipped with a pressed steel shield on one side, providing protection against dust and contaminants while maintaining low friction. This shielding helps extend the bearing's operational lifespan, especially in environments where cleanliness is crucial.
Key Specifications and Dimensions
- Inner Diameter (d): 55 mm
- Outer Diameter (D): 120 mm
- Width (B): 29 mm
- Shield Type: ZN (pressed steel shield on one side)
- Bearing Type: Deep groove ball bearing
- Manufacturer: ZKL
Applications and Benefits
The bearing 6311 ZN ZKL is widely used in various mechanical systems including electric motors, gearboxes, pumps, and conveyor systems. Its sturdy design and shielding make it suitable for environments where moderate contamination is present but sealed bearings are not necessary. Some of the notable benefits include:
- High-speed capability with low noise and vibration levels
- Enhanced protection against dust and debris due to the ZN shield
- Easy installation and compatibility with standard housings and shafts
- Long operational life reducing downtime and maintenance costs
Choosing the 6311 ZN ZKL bearing ensures optimal performance and reliability for your rotating equipment, helping to improve efficiency and extend machinery lifespan.

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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.