INA D40 Precision Ball Thrust Bearing Size 3 Inch Bore

INA D40 precision ball thrust bearing, with a 3 inch bore, is a high-precision axial bearing designed to carry thrust loads between rotating surfaces. As a ball thrust bearing, it uses balls between races to translate axial forces while permitting rotation, delivering smooth motion and accurate axial alignment in compact spaces. The D40 designation identifies this specific INA unit within their precision bearing lineup, suitable for applications where a reliable, rigid thrust-support solution is required in assemblies with a 3 inch bore. Manufactured by INA, this bearing combines the standard attributes of precision ball thrust bearings—precise clearance control and repeatable positioning—with a bore-size specification that enables shaft compatibility in compatible mechanical systems. In practice, it serves as an axial load-bearing element in machinery where controlled thrust transfer and dependable rotation are essential.