Корпус на лагерно тяло FNL 506 A (722506D) SKF



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The SKF FNL 506 A is a robust, non-split bearing housing designed to provide reliable support for bearings mounted on adapter sleeves. Constructed from high-quality cast iron, this housing ensures durability and longevity in demanding industrial environments.
Key Features:
- Design: Non-split, cast iron construction with a triangular flange.
- Mounting: Three bolt holes for secure attachment to the shaft end.
- Cover: Supplied with a cover for shaft end applications (suffix A).
- Compatibility: Designed for bearings mounted on adapter sleeves.
- Lubrication: Features an integrated grease guiding system for efficient lubrication.
- Sealing: Equipped with low-friction, double-lip seals to retain grease and exclude contaminants.
Technical Specifications:
- Housing Material: Cast iron.
- Flange Type: Triangular with three bolt holes.
- Shaft Diameter (da): 25 mm.
- Bearing Seat Diameter (Da): 62 mm.
- Width of Bearing Seat (A): 42 mm.
- Width of Flange (AA): 60.5 mm.
- Attachment Bolt Diameter (G): 10 mm.
- Pitch Diameter of Bolt Holes (J): 116 mm.
- Housing Cover Diameter (D): 86 mm.
- Housing Cover Height (H): 117 mm.
- Housing Cover Height (H1): 44 mm.
- Center Height of Bearing Seat (J): 116 mm.
- Distance Between Attachment Bolt Holes (L): 130 mm.
- Initial Grease Fill (20%): 15 g.
- Initial Grease Fill (40%): 25 g.
- Recommended Tightening Torque for Cover Bolts: 6 Nm.
- Recommended Tightening Torque for Attachment Bolts: 50 Nm.
Benefits:
- Durability: The cast iron construction offers excellent strength and resistance to wear.
- Ease of Maintenance: The integrated grease guiding system and low-friction seals reduce maintenance requirements.
- Versatility: Suitable for various industrial applications requiring reliable bearing support.
For detailed installation instructions and additional information, please refer to the SKF product documentation.

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SKF: Leading Manufacturer of Bearings and Transmission Technology
Company Overview
SKF is a globally recognized manufacturer specializing in high-quality bearings and transmission technology. Founded in 1907 in Gothenburg, Sweden, SKF has established itself as a pioneer in the development of innovative solutions for rotating equipment and industrial applications. With over a century of expertise, SKF continuously drives advancements in reliability, efficiency, and sustainability in its product offerings.
History and Heritage
SKF was founded by Sven Wingquist, who invented the self-aligning ball bearing, revolutionizing the bearing industry. The company quickly expanded from its Swedish roots to become a global leader in bearing technology and related services. SKF’s long-standing tradition of innovation is reflected in its commitment to research and development, ensuring cutting-edge products that meet evolving industrial needs.
Product Range
SKF offers an extensive selection of products designed to optimize machine performance and lifespan. Their product portfolio includes:
- Ball Bearings: Standard, high-precision, and special designs for various applications.
- Roller Bearings: Cylindrical, spherical, and tapered roller bearings engineered for heavy-load conditions.
- Bearing Units and Housings: Solutions designed for easy installation and enhanced reliability.
- Seals and Lubrication Systems: Critical components that protect and extend the operational life of bearings.
- Transmission Components: Including belts, couplings, clutches, and gearboxes.
- Condition Monitoring and Maintenance Services: Tools and technologies such as SKF @ptitude and SKF Enlight for predictive maintenance.
Main Focus and Technological Innovations
SKF’s main focus is delivering high-performance, durable, and energy-efficient solutions that reduce downtime and operational costs for customers worldwide. The company integrates digital technology with traditional mechanical engineering to support Industry 4.0 initiatives. SKF’s innovations include smart bearings equipped with sensors for real-time condition monitoring, advanced lubrication technologies, and bespoke solutions tailored to specific industry challenges.
Application Areas
SKF’s products and services are critical components across a broad spectrum of industries, including:
- Automotive and Transportation
- Aerospace and Defense
- Industrial Manufacturing and Machinery
- Energy Production (Wind, Hydro, and Thermal)
- Mining and Construction Equipment
- Food and Beverage Processing
- Railway and Marine Applications
Company Headquarters
The global headquarters of SKF is located in Gothenburg, Sweden. From this central location, SKF operates through a vast network of manufacturing facilities, sales offices, and technical centers worldwide, serving customers in more than 130 countries.
Conclusion
With its rich heritage, comprehensive product range, and commitment to innovation, SKF remains a trusted partner for industries seeking reliable and advanced bearing and transmission technology solutions to improve performance and sustainability.