89420 -M INA cylindrical roller thrust bearing

INA 89420-M Cylindrical Roller Thrust Bearing (Heavy Duty Series)

The INA 89420-M is a massive rolling unit engineered to accommodate extreme axial loads acting in a single direction. Belonging to the reinforced 894 series, it offers the highest rigidity among all thrust bearing types. At its core is a solid brass cage (M), which precisely guides the rolling elements, dampens vibrations, and dissipates heat effectively. Due to its separable design, mounting on a 100 mm shaft is efficient, allowing for independent installation of the washers and the roller assembly.

Application

• Heavy Industry: Hydraulic presses, steel rolling mills, and high-pressure extruders.
• Energy Sector: Main axial bearing support in vertical generators and hydroelectric turbines.
• Mining: Deep-sea drilling drives, rotary tables, and heavy crushing equipment.
• Marine Engineering: Propulsion shaft thrust blocks for ocean-going vessels.
• Civil Engineering: Slewing mechanisms in port cranes and TBMs (Tunnel Boring Machines).

Technical Specification

• Manufacturer: INA (Schaeffler Group - Germany).
• Designation: 89420-M.
• Dimensions: 100 mm (ID) x 210 mm (OD) x 67 mm (Total Height).
• Cage Type: M – Solid brass cage (roller-guided).
• Load Rating: Heavy Duty – designed for continuous operation under extreme pressure.
• Material: Heat-treated steel with exceptional metallurgical purity.

Features and Benefits

• Maximum Axial Rigidity: Linear roller contact ensures near-zero deflection, critical for large-scale machine precision.
• Brass Cage (M): Provides a safety margin under boundary lubrication conditions and protects against seizure.
• Premium Quality: Manufactured to Schaeffler's rigorous standards, ensuring 24/7 reliability.
• Shock Resistance: The 894 series design is naturally resilient to sudden axial load spikes.
• Extended Service Life: Optimized LOG profiling of the roller ends reduces edge stresses.

Why Choose This Product

Investing in the INA 89420-M bearing is a guarantee of process security in applications where any unplanned downtime results in staggering costs. By choosing the 894 series from Schaeffler, you receive a product that sets the standard for durability in the heaviest industrial infrastructure. The brass cage and German engineering are the bedrock of your machinery's reliability.