89444 -M INA cylindrical roller thrust bearing

INA 89444-M Cylindrical Roller Thrust Bearing (Extreme Series)

The INA 89444-M is a high-specialty rolling unit engineered to accommodate exceptionally heavy axial loads in a single direction. It belongs to the 894 series, representing the pinnacle of thrust bearing design in terms of rigidity and load capacity. The standout feature of this model is the solid brass cage (M), which precisely guides the rollers, effectively dampens vibrations, and ensures reliable operation at elevated temperatures. Thanks to the linear contact of the rolling elements, this model offers uncompromising resistance to deflection for 220 mm diameter shafts.

Application

• Heavy Machinery: Main axial support in massive hydraulic presses, plastic extruders, and rolling mills.
• Energy Sector: Vertical shaft bearings for generators in hydroelectric plants and large industrial pumps.
• Mining Industry: Drive components for deep-sea drilling rigs and heavy mining equipment.
• Marine Engineering: Propeller shaft thrust bearings in large vessels.
• Infrastructure: Slewing mechanisms in high-tonnage port cranes and drawbridges.

Technical Specification

• Manufacturer: INA (Schaeffler Group - Germany).
• Designation: 89444-M.
• Dimensions: 220 mm (ID) × 420 mm (OD) × 122 mm (Total height).
• Cage Type: M – Solid brass cage (roller-guided).
• Load Type: Unidirectional axial loads only (Heavy Duty).
• Design: Separable (allows independent mounting of shaft and housing washers).

Features and Benefits

• Ultimate Axial Rigidity: The 894 series geometry eliminates micro-deflections, critical for the precision of heavy-duty equipment.
• Brass Cage Advantage: Reduced risk of seizure and excellent performance with EP (Extreme Pressure) lubricants.
• Maximum Load Rating: Designed to excel where standard 812-series thrust bearings would suffer premature wear.
• Premium Durability: The use of high-purity metallurgical steel significantly extends fatigue life.
• Service Efficiency: The modular design allows for independent component replacement, lowering maintenance costs.

Why Choose This Product

By investing in the INA 89444-M, you choose a component synonymous with safety in heavy industry. In 220 mm applications where axial forces reach hundreds of kilonewtons, the 894 series with a brass cage is unrivaled. It is a guarantee of operational continuity for your most expensive machinery, minimizing the risk of catastrophic failures and offering the highest level of engineering from the Schaeffler Group.