Bearing 634 ZZ ZKL



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Product detailed description
Bearing 634 ZZ ZKL is a high-quality, precision-engineered miniature ball bearing designed to deliver exceptional performance and durability across a wide range of applications. Manufactured by ZKL, a trusted name in the bearing industry, this bearing ensures reliable operation under various conditions, making it an ideal choice for both industrial and mechanical uses.
Key Features of Bearing 634 ZZ ZKL
- Type: Deep groove ball bearing
- Shielding: ZZ indicates metal shields on both sides, offering protection against dust and contaminants while maintaining low friction
- Material: High-grade chromium steel for enhanced wear resistance and long service life
- Precision: Manufactured to exacting standards to ensure smooth rotation and minimal noise
Dimensions and Specifications
- Inner Diameter (ID): 4 mm
- Outer Diameter (OD): 13 mm
- Width: 5 mm
The compact size of the 634 ZZ ZKL bearing makes it suitable for applications requiring space-saving solutions without compromising performance. It is commonly used in electric motors, small gearboxes, household appliances, and precision instruments.
Benefits of Using Bearing 634 ZZ ZKL
- Enhanced protection against dust and debris due to double metal shields
- Low friction and smooth operation, resulting in reduced wear and energy consumption
- Robust construction for high durability and extended service intervals
- Compatible with a wide range of lubricants for optimized performance
Whether you are replacing an existing bearing or designing new machinery, the bearing 634 ZZ ZKL offers reliable performance and quality you can trust. Its precise dimensions and sturdy design make it a versatile component that supports efficient mechanical motion in demanding environments.

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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.