K81111 -TV INA cylindrical longitudinal assembly

INA K81111-TV Cylindrical Roller and Cage Thrust Assembly (Polyamide Cage)

The K81111-TV INA assembly is a precision rolling component consisting of a set of cylindrical rollers secured in a high-strength cage. This solution is dedicated to applications where minimal cross-sectional height is a priority while handling significant axial loads. The standout feature is the glass-fiber reinforced polyamide 66 cage (TV). This design ensures excellent roller guidance, reduced assembly weight, and quieter operation compared to traditional metal cages.

Application

• Machine Construction: Shaft support in machine tools and actuators with very limited axial space.
• Automation & Robotics: Compact turntables and joints requiring high axial rigidity.
• Automotive Industry: Gearboxes, transmissions, and control systems.
• Home Appliances: Drive mechanisms requiring durability and low noise levels.
• Precision Equipment: Guidance for moving parts in vertical axes of rotation for measuring devices.

Technical Specification

• Manufacturer: INA (Schaeffler Group - Germany).
• Designation: K81111-TV.
• Dimensions: 55 mm (ID) × 78 mm (OD) × 9 mm (Assembly height).
• Cage Type: TV – Glass-fiber reinforced Polyamide 66.
• Load Type: Unidirectional axial loads only.
• Compatibility: Works with shaft washers WS81111 and housing washers GS81111.

Features and Benefits

• Extreme Compactness: A height of only 9 mm allows for building extremely rigid systems where traditional bearings won't fit.
• Modern Polyamide Cage: Reduces internal friction, leading to lower operating temperatures and extended lubricant life.
• High Axial Stiffness: Linear roller contact minimizes deflection under load, ensuring machine stability.
• Design Flexibility: Can be used directly on hardened and ground machine surfaces to further reduce unit size.
• SCHAEFFLER Quality: Guaranteed highest manufacturing precision and extended fatigue life.

Why Choose This Product

By choosing the INA K81111-TV assembly, you are investing in a product from the rolling technology leader – the Schaeffler Group. In 55 mm shaft applications where every millimeter counts, this assembly offers an unbeatable load-to-size ratio. The polyamide cage ensures smoother and quieter operation, directly enhancing the technical standard of your entire project.