Bearing 6311 C3 ZKL



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Product detailed description
Bearing 6311 C3 ZKL
The 6311 C3 ZKL is a high-quality deep groove ball bearing designed to deliver reliable performance and durability in a wide range of industrial applications. Manufactured by ZKL, a trusted name in bearing technology, this bearing combines precision engineering with robust construction to ensure smooth operation under various load conditions.
This particular model, 6311 C3, features a slightly increased internal clearance (C3), which allows for thermal expansion and high-speed operation, making it ideal for applications where temperature variations and higher rotational speeds are common. The ZKL designation indicates the reputable brand known for its stringent quality control and long service life.
The 6311 C3 ZKL bearing has the following standard dimensions: an inner diameter of 55 mm, an outer diameter of 120 mm, and a width of 29 mm. These precise measurements conform to international standards, ensuring compatibility with a wide range of machinery and equipment.
- Type: Deep groove ball bearing
- Inner Diameter: 55 mm
- Outer Diameter: 120 mm
- Width: 29 mm
- Internal Clearance: C3 (increased)
- Brand: ZKL
Engineered for low friction and high precision, the 6311 C3 ZKL is suitable for applications such as electric motors, gearboxes, pumps, and conveyors. Its ability to withstand radial and axial loads makes it versatile for both industrial and automotive uses.
Choosing the 6311 C3 ZKL guarantees enhanced performance, reduced maintenance costs, and extended operational life, ensuring your machinery runs efficiently and reliably. Trust ZKL’s expertise and quality standards to meet your bearing requirements with this excellent product.

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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.