Bearing 51203 P6 ZKL



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Product detailed description
Bearing 51203 P6 ZKL
The 51203 P6 ZKL is a high-precision angular contact ball bearing designed to meet the demands of various industrial applications. Manufactured by ZKL, a renowned producer known for quality and reliability, this bearing offers excellent performance in environments requiring precise axial and radial load handling.
This bearing features a P6 tolerance class, ensuring higher accuracy and better running stability compared to standard bearings. It is ideal for applications such as electric motors, machine tool spindles, and precision instruments where tight dimensional tolerances and smooth operation are critical.
Key Features of 51203 P6 ZKL
- High precision P6 tolerance for enhanced accuracy
- Angular contact design suitable for combined radial and axial loads
- Robust construction ensuring long service life and reliability
- Manufactured by ZKL, a trusted brand in bearing technology
While the exact dimensions for this specific model are not commonly listed in public catalogs, angular contact ball bearings similar to the 51203 series typically have an inner diameter around 17 mm, an outer diameter near 40 mm, and a width approximately 12 mm. For exact measurements, consulting the official ZKL catalog or datasheet is recommended.
51203 P6 ZKL is suitable for demanding applications requiring durable, precise bearings capable of withstanding moderate to high speeds and loads. Its design helps in reducing friction and heat generation, contributing to energy efficiency and operational longevity.

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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.