81156 -M INA cylindrical roller thrust bearing

INA 81156-M Cylindrical Roller Thrust Bearing (Brass Cage)

The INA 81156-M is a high-precision rolling unit engineered to accommodate exceptionally heavy axial loads in a single direction. The assembly consists of a cylindrical roller and cage assembly along with shaft and housing washers. The standout feature of this model is the solid brass cage (M), which provides superior roller guidance, excellent heat dissipation, and high resistance to shock and vibration. Due to the linear contact of the rollers, this bearing offers significantly higher axial stiffness than standard ball thrust bearings.

Application

• Heavy Industry: Hydraulic presses, rolling mills, and high-pressure extruders.
• Energy Sector: Main bearing support for vertical shafts in generators and turbines.
• Metalworking: Spindles for large-scale vertical boring mills and machining centers.
• Marine Engineering: Propulsion shaft thrust blocks for ships.
• Mining: Deep-sea drilling drives and crushing equipment.

Technical Specification

• Manufacturer: INA (Schaeffler Group - Germany).
• Designation: 81156-M.
• Dimensions: 280 mm (ID) x 350 mm (OD) x 53 mm (Total Height).
• Cage Type: M – Solid brass cage (roller-guided).
• Load Capacity: Extremely high static and dynamic axial load ratings.
• Material: Heat-treated steel with exceptional metallurgical purity.

Features and Benefits

• Extreme Stiffness: Cylindrical geometry ensures minimal deflection under full load, enhancing machine precision.
• Brass Cage Advantage: Enhances bearing lifespan under difficult lubrication conditions and reduces internal friction.
• Separable Design: Allows for independent mounting of washers and the roller assembly, simplifying heavy machinery installation.
• SCHAEFFLER Reliability: Optimized roller end profiling reduces edge stresses, significantly extending service life.
• Energy Efficiency: Precision-ground raceways minimize rolling resistance.

Why Choose This Product

By choosing the INA 81156-M bearing, you are investing in a premium product from a global leader in rolling technology. In applications involving a 280 mm shaft, any unplanned downtime results in staggering costs. The brass cage and Schaeffler’s German engineering provide a safety margin that lower-cost alternatives simply cannot match. It is the bedrock of reliability for your most demanding industrial projects.