81209 -TV INA cylindrical roller thrust bearing

INA 81209-TV Cylindrical Roller Thrust Bearing (Heavy Series)

The INA 81209-TV is a high-performance thrust bearing designed to handle exceptionally heavy axial loads in a single direction. The unit consists of a cylindrical roller and cage assembly along with shaft and housing washers. This model features a glass-fiber reinforced polyamide 66 cage (TV), ensuring low rolling resistance, excellent vibration damping, and smooth operation. Due to the linear contact of the rollers, the 812 series offers extreme axial rigidity, essential for high-precision industrial machinery.

Application

• CNC Machine Tools: Axial support for spindles and high-pressure ball screws.
• Automation & Robotics: Rotary tables and positioners requiring high axial stiffness.
• Mining Industry: Drive components in drilling rigs and crushing equipment.
• Energy Sector: Vertical shaft bearing support for generators and industrial pumps.
• Logistics: Lifting mechanisms and heavy-duty conveyor systems.

Technical Specification

• Manufacturer: INA (Schaeffler Group - Germany).
• Designation: 81209-TV.
• Dimensions: 45 mm (ID) × 73 mm (OD) × 20 mm (Total height).
• Cage Type: TV – Glass-fiber reinforced Polyamide 66.
• Load Type: Unidirectional axial loads only.
• Design: Separable (simplifies independent mounting of washers and the assembly).

Features and Benefits

• Maximum Axial Rigidity: Linear roller contact ensures minimal deflection under full load, guaranteeing precision.
• Optimized TV Cage: Polyamide reduces friction and prevents overheating, extending lubricant life.
• High Load Capacity (812 Series): Provides greater pressure resistance than the thinner 811 series with the same bore size.
• Ease of Maintenance: Separable design allows for independent installation of washers and the assembly, shortening downtime.
• SCHAEFFLER Quality: Guaranteed highest steel purity and precision-engineered raceways.

Why Choose This Product

By choosing the INA 81209-TV bearing, you are investing in a premium product from a global leader – the Schaeffler Group. In applications with a 45 mm shaft where axial forces are substantial, the reinforced 812 series provides a safety margin that standard solutions cannot match. The polyamide cage ensures quieter and more energy-efficient operation, directly leading to lower operational costs and increased uptime for your machinery.